1st term Quiz
1- True total anodontia may be a feature of .....
A) cleidocranial dysplasia
B) craniofacial dysostosis
C) congenital hypothyroidism
D) Streeter syndrome
2- Talon cusp is ....
A) Dens invaginatus on anterior teeth
B) Dens evaginatus on anterior teeth
C) Dens invaginatus on posterior teeth
D) Hypoplastic cingulum
3- Turner's tooth is a form of .....
A) Supernumerary teeth
B) Amelogenesis Imperfecta
C) Focal enamel hypoplasia
D) Generalized enamel hypoplasia
4- Gemination is defined as ....
A) Union of two normally separated teeth buds
B) Single tooth bud united with supernumerary tooth bud
C) Division of a single tooth bud
D) Tooth with large pulp chamber
5- Mulberry molars are characteristic feature of ...
A) Sever fluorosis
B) Trauma at time of birth
C) Congenital Syphilis
D) Osteogenesis imperfecta
6- The condition at which the teeth resembles the cud-chewing animals'ones...
A) Dilaceration
B)Taurodontism
C)Concresence
D)Dens Invaginatus
7-Fusion of two teeth along their roots by cementum only is .........,while fusion of two teeth involving dentin is .............
A) Concresence - Gemination
B) Concrescence - Dilaceration
C) Gemination - Fusion
D) Concresence – Fusion
8-Developing ameloblasts are affected by the ingestion of high fluoride content water resulting in :
A)Turner's Tooth
B)Hutchinson's Incisors
C)Mottled Enamel
D)Moon's Molars
9-Gemination of teeth occur due to :
A) division of a single tooth bud after calcification
B) division of a single tooth bud before calcification
C) fusion of two teeth before calcification
D) fusion of two teeth after calcification
10- Teeth that erupt within 30 days of birth are called :
A)Natal Teeth
B)Neonatal Teeth
C)Primary Teeth
D)Prenatal Teeth
11-Ghost teeth is seen in which of the following ?
A)Dens in dente
B)Regional Odontodysplasia
C)Dentin Dysplasia
D)None of the above
12-Dental anomaly of teeth associated with defective bone formation is seen in :
A)Amelogenesis Imperfecta
B)Dentinogenesis Imperfecta
C)Odontodysplasia
D)Osteitis Deformans
13-A four year old child has less number of teeth and lateral incisors with bifurcated roots with two root canals. This condition is called:
A)Dilaceration
B)Concrescence
C)Gemination
D)Fusion
14-Microdontia is seen most commonly affecting:
A)Maxillary Lateral Incisor
B)Mandibular Second Premolar
C)Mandibular Central Incisor
D)Mandibular First Premolar
15-Shell teeth are more common in this variant of dentinogenesis imperfect:
A)Type I
B)Type II
C)Type I & II
D)Type III
16-Dilated odontome is a synonym of
A) Dens evaginatus
B) Talon cusp
C) Dens invaginatus
D) Macrodontia
17-The appearance of normal thickness enamel with extremely thin dentin and abnormally large pulp chamber is indicative of
A) Amelogenesis imperfect
B) Dentinogenesis imperfecta Type I
C) Dentinogenesis Type III
D) Regional odontodysplasia
18-Loss of organization of radicular dentin with subsequent shortening of root length is a feature of
A) Dentin dysplasia Type I
B) Dentin dysplasia Type II
C) Dentinogenesis imperfecta Type II
D) Dentinogenesis imperfecta Type III
19-Lack of development of six or more teeth is denoted by the term
A) Hypodontia
B) Anodontia
C) Oligodontia
D)All of the Above
20-True generalized microdontia is characterized by
A)Small teeth with large jaws
B)Small teeth with small jaws
C)Smaller teeth than the normal
D)Large teeth with small jaws
21-Gardner's Syndrome does not include:
A)Osteomas
B)Epidermoid Cysts
C)Osteosarcoma
D)Impacted permanent teeth
22- A 4-year-old child has a normal complement of primary teeth, but they are gray and exhibit extensive occlusal and incisal wear. Radiographic examination indicates extensive deposits of secondary dentin in these teeth. Most likely this condition is:
A)Neonatal Hypoplasia
B)Amelogenesis Imperfecta
C)Cleidocranial Dysplasia
D)Dentinogenesis Imperfecta
23-Submerged teeth are:
A)Ankylosed teeth
B)Unerupted
C)Impacted teeth
D)Intruded teeth
24-Absence of pulp chamber is seen in…
A)Craniofacial Dysostosis
B)Dentinogenesis Imperfecta
C)Amelogenesis Imperfecta
D)Any of the above
25-Turner's Tooth is seen in….
A)Enamel hypoplasia due to hypocalcemia
B)Enamel hypoplasia due to birth injuries
C)Enamel hypoplasia due to congenital syphilis
D)Enamel hypoplasia due to local infection or local trauma
26-Delayed eruption of at least part of the dentition is recognized feature of all of the following except…….
A)Rickets
B)Congenital Hyperthyroidism
C)Cleidocranial Dysplasia
D)Cherubism
27-Which of the following isn't hereditary ?
A)Amelogenesis Imperfecta
B)Cleidocranial Dysostosis
C)Regional Odontodysplasia
D)Dentinogenesis Imperfecta
28-Complete obliteration of pulp is seen in all except….
A)Dentin Dysplasia
B)Type I Dentinogenesis Imperfecta
C)Type II Dentinogenesis Imperfecta
D)Type III Dentinogenesis Imperfecta
29- Large pulp chambers are characteristic of all of the following conditions except…
A)Shell teeth
B)Taurodontism
C)Dentin Dysplasia II
D)Dentinogenesis Imperfecta II
30- Which of the following is the cause of dilacerations ?
A)Trauma to the tooth germ during root development
B)Abnormal displacement of tooth germ during root development
C)Abnormal proliferation of enamel epithelium during tooth development
D)Abnormal displacement of ameloblasts during tooth formation
31- A 7 year old child has yellowish discolored spot of maxillary central incisor. His mother presents a history of injury to deciduous tooth three years back with recurrent infections and swelling. The diagnosis is….
A)Turner's Hypoplasia
B)Generalized Dental Fluorosis
C)Syphilitic Hypoplasia
D)Rickets
32- Lavender teeth is a term given for…………….
A) Tetracycline discoloration
B) Dental Fluorosis
C) Congenital Porphyria
D) Necrotic teeth
33-The intestinal Polyps in……….... Are considered premalignant condition.
A) Cleidocranial dysplasia
B) Hereditary ectodermal dysplasia
C) Peutz Jegher Syndrome
D) Gardner's Syndrome
34-Multiple Dentigerous cysts occur in…………..
A) Cleidocranial dysplasia
B) Hereditary ectodermal dysplasia
C) Peutz Jegher Syndrome
D) Gardner's Syndrome
35-Clinical evidence of Dentinogenesis imperfecta type I and II is…..
A) Defective enamel & dentin
B) Defective dentin and obliterated pulp chambers
C) Oligodontia
D) Increased rate of periodontal diseases
36-The term "Dilaceration" refers to…
A) A deformity of a tooth consisting of sharp bend in the long axis
B) A tooth is split into two
C) Union of two adjacent tooth germs
D) An extra cusp on the palatal surface of upper anterior teeth
37-Mesiodens is……..
A) a type of supernumerary teeth
B) a type of supplemental teeth
C) most commonly found between lower central incisors
D) a type of postpermanent dentition
38-Thistle tube appearance of the pulp is characteristic of………
A) Amelogenesis Imperfecta
B) Dentinogenesis Imperfecta
C) Coronal dentin dysplasia
D) Radicular dentin dysplasia
39-Turner's tooth most commonly affects……
A) Deciduous maxillary anterior teeth
B) Deciduous mandibular anterior teeth
C) Permanent maxillary anterior teeth
D) Permanent mandibular anterior teeth
40-Which of these structures is not affected in hereditary ectodermal dysplasia?
A) Enamel
B) Bones
C) Hair
D Sweat glands
41-Talon cusp is a characteristic of which syndrome?
A) Pierre Robin Syndrome
B) Melkerson Rosenthal Syndrome
C) Rubinstein Taybi Syndrome
D) Down Syndrome
42. Apart from maxillary lateral incisor, which other tooth is commonly affected by microdontia?
(a) Mandibular premolars
(b) Maxillary canines
(c) Mandibular central incisors
(d) Third molars
43. Fusion of teeth involves a confluence of
(a) Enamel only
(b) Enamel and dentin
(c) Dentin only
(d) Cementum only
44. The base of invagination of crown/root in dens invaginates contains
(a) Dystrophic dentin
(b) Dystrophic enamel
(c) Necrotic pulp tissue
(d) Dystrophic cementum
45. Which amongst the following diseases is capable of producing developmental alterations in teeth?
(a) Tetanus
(b) Chickenpox
(c) Diphtheria
(d) Syphilis
46. Peg shaped incisors which taper toward the incisal edge are typically seen in all of the following conditions except:
A) Congenital Syphilis
B) Rickets
C) Anhidrotic ectodermal dysplasia
D) Supernumerary teeth
47.A deep pit lined by enamel seen in the lingual surface of maxillary lateral incisor is most likely to be:
A) Dens in dente
B) Enamel hypoplasia
C) Talon's cusp
D) Enamel pearl
48. Dentinogenesis Imperfecta is:
A) Autosomal dominant
B) Autosomal recessive
C) Sex linked recessive
D) Not a inheritable trait
49. False about anodontia:
A) May involve both deciduous and the permanent dentitions
B) In false anodontia tooth doesn't undergo full development
C) May involve a single tooth
D) In total anodontia all teeth are missing
50. Most commonly submerged tooth is:
A) Mand. primary 1st molar
B) Mand. primary 2nd molar
C) Maxi. primary 1st molar
D) Maxi. primary 2nd molar
51. A dens in dente is usually caused by:
A) An abnormal proliferation of pulp tissue
B) Denticle formation within the pulp tissue
C) A deep invagination of the enamel organ during formation
D) A supernumerary tooth bud enclaved within a normal tooth
52. In children the most frequently missing permanent teeth are:
A) First permolars
B) Second premolars
C) Max. Lateral incisors
D) Mandibular lateral incisors
53. Odontodysplasia is most common in:
A) Mandibular premolar
B) Mandibular canine
C) Mandibular third molar
D) Maxillary central incisor
54. Dens in dente is most commonly seen in:
A) Premolars
B) Paramolars
C) Lateral incisors
D) Maxillary canine
55. Taurodontism is usually seen in:
A) Mesiodens
B) incisor with talon cusp
C) Mandibular first molar
D) Maxillary premolars
56-Mildest form of cleft palate is..........
A) Bifid uvula
B) Cleft soft palate
C) Cleft of soft palate & hard palate
D) Cleft palate & lip
57-Macrostomia is a feature of.....
A) Treacher collins syndrome
B) Pierre robin syndrome
C) Peutz jeghers syndrome
D) Both A & B
58-Airway obstruction is a clinical significance of.....
A) Treacher collins syndrome
B) Pierre robin syndrome
C) Cleft palate
D) Lateral facial cleft
59-Lingual thyroid nodule is considered as......
A) Normal anatomic variation
B) Ectopic Lesion
C) Hamartoma
D) Both A & B
60- A child has marked difference of crown, root size, eruption pattern of left and right side of jaw. The condition is :
A) Crouzon Syndrome
B) Hemifacial hypertrophy
C) Cherubism
D) Achondroplasia
61-Which of the following conditions has a potential of malignant transformation ?
A) Lingual thyroid nodule
B) Median rhomboid glossitis
C) chelitis glandularis
D) Both A & C
62-Treacher collins syndrome is characterized by all the following except.....
A) Antimongoloid eyes
B) Micrognathia
C) Hypoplasia of zygomatic bone
D) Microstomia
63-Decrease in normal keratin desquamation of filiform papillae leads to.....
A) Lingual thyroid nodule
B) Median rhomboid glossitis
C) Fissured tongue
D) Hairy tongue
64-Among the features of Melkerson Rosenthal syndrome ....
A) Chelitis granulomatosa & hemifacial hyperplasia
B) Chelitis glandularis & fissured tongue
C) Chelitis glandularis & facial paralysis
D) None of the above
65-Which of the following conditions disappears on stretching the buccal mucosa ?
A) White spongy nevus
B) Fordyce's granules
C) Leukoedema
D) None of the above
66-All of the followings considerd as hamartoma except....
A) Lingual thyroid nodule
B) Torus Mandibularis
C) Intestinal polyps in Peutz Jegher syndrome
D) Torus Palatinus
67-Absence of a major salivary gland duct is called.........
A) Aplasia
B) Aberrancy
C) Atresia
D) None of the above
68-In Erythema migrans , which papilla of the tongue are absent ?
A) Fungiform
B) Foliate
C) Filiform
D) Circumvallate
69. Facial Paralysis , Cheilitis granulomatosa and fissured tongue characterize which of the following syndromes ?
A) Frey's Syndrome
B) Melkerson-Rosenthal syndrome
C) Treacher Collins syndrome
D) Down's Syndrome
70-The syndrome which consists of cleft palate, micrognathia and glossoptosis is known as :
A) Marfan's syndrome
B) Crouzon's syndrome
C) Paget's disease
D) Pierre Robin syndrome
71-A patient notices a well demarcated area of depapillation on his tongue which has been there for as long as he can remember. The most probable diagnosis:
A) Geographic tongue
B) Median rhomboid glossitis
C) Black hairy tongue
D) Moeller's glossitis
72-Fordyce's spots are:
A) fat tissue embedded in buccal mucosa
B) Red spots
C) Present on the cheek mucosa lateral to the angle of the mouth
D) All of the above
73-Hairy tongue is characterized by :
A) Hypertrophy of fungiform papillae
B) Hypertrophy of filiform papillae
C) Hypertrophy of foliate papillae
D) Hypertrophy of circumvallate papillae
74-Bifid tongue, a congenital anomaly occurs due to non-fusion of :
A) Tuberculum impar and lateral lingual swellings
B) Hypobranchial eminence and tuberculum impar
C) The two lateral lingual swellings
D) Any of the above
75-About geographic tongue, all are true except :
A) Lesions may be bilaterally symmetrical on tongue
B) No treatment is required
C) Is a precancerous condition
D) May be related to emotional stress
76-Median rhomboid glossitis is asssociated with :
A) Oral cancer
B) Fungal infection
C) Leukoplakia
D) Burning sensation of tongue
77-In Treacher's collins syndrome, there is :
A) Upward sloping of the palpebral fissure
B) Poorly developed zygomatic bone
C) Mandibular prognathism
D) No loss of hearing
78-Pierre Robin syndrome is associated with :
A) Micrognathia
B) Cleft of the lip and palate
C) Ventricular septal defect
D) Syndactyly
79-Puetz - Jegher Syndrome is characterized by :
A) Deafness
B) Multiple supernumerary teeth
C) Multiple intestinal polyposis
D) Scleroderma
80-About geographic tongue, Which of the following isn't true:
A) It's due to emotional stress.
B) It's a symptom of psoriasis.
C) Lesions may appear on the palate or gingiva.
D) Lesions may appear on the undersurface of the tongue.
81-Syndactyl is a common feature of……….
A)Crouzon Syndrome.
B)Treacher Collin's Syndrome.
C)Apert Syndrome.
D)Pierre Robin Syndrome.
82. Cleft of the primary palate occurs
(a) Anterior to incisive foramen
(b) Posterior to incisive foramen
(c) Between lateral incisor and canine
(d) Between canine and 1st premolar
83. Minimal form of clefting of palate is seen in
(a) Soft palate
(b) Uvula
(c) Hard palate and soft palate
(d) Posterior to incisive foramen
84. Increased risk of development of squamous cell carcinoma is associated with which of the following developmental conditions?
(a) Cheilitis granulomatosa
(b) Heck’s disease
(c) Cheilitis glandularis
(d) Fibromatosis gingivae
85. If a patient has multiple intestinal polyps, cutaneous melanocytic macules, rectal prolapse and gynecomastia, he/she is probably suffering from
(a) Gardner syndrome
(b) Goltz-Gorlin syndrome
(c) Peutz-Jeghers syndrome
(d) Grinspan syndrome
86. Fordyce’s granules is heterotopic collection of _______ in oral cavity
(a) Sweat glands
(b) Salivary glands
(c) Hair follicles
(d) Sebaceous glands
87. Which amongst the following is not a cause of macroglossia?
(a) Hemangioma
(b) Lymphangioma
(c) Down’s syndrome
(d) Leukemia
88. Which one of the following is a synonym of fissured tongue?
(a) Lingua nigra
(b) Scrotal tongue
(c) Geographic tongue
(d) Lingual varix
89. Median rhomboid glossitis occurs
(a) Anterior to circumvallate papillae
(b) Posterior to circumvallate papillae
(c) Tip of tongue
(d) Lateral border of tongue
90. Histopathological features of benign migratory glossitis closely resemble that of
(a) Lichen planus
(b) Psoriasis
(c) Systemic lupus erythematosus
(d) Erythema multiforme
91. Amongst the following causes, the least probable cause of hairy tongue is
(a) Smoking
(b) Poor oral hygiene
(c) Epstein-Barr virus
(d) Radiation therapy
92. A nodular mass near base of tongue with presenting complaints of dyspnea and dysphagia and without a demonstrable main thyroid gland could most probably be
(a) Reactive lymphoid aggregate
(b) Lymphoid hamartoma
(c) Lingual thyroid nodule
(d) Lymphoepithelial cyst
93. Stafne cyst/Stafne defect is an aberrant collection of _____ gland tissue within a deep depression in the mandible
(a) Sweat glands
(b) Sebaceous glands
(c) Mucous glands
(d) Salivary glands
95- Bohn's nodules are:
A) Cystic swellings in neonates
B) Cysts associated with soft palate
C) Cysts of gingiva in growing children
D) Warts on the tongue
96- Prolonged administration of broad spectrum antibiotics results in the formation of:
A) Black hairy tongue
B) Median rhomboid glossitis
C) Geographic tongue
D) Fissured tongue
97- Nasolabial cyst is thought to arise from:
A) Remnants of cell rests of serres
B) Remnants of cell rests of mallasez
C) Remnants of cell rests of embryonic lacrimal duct
D) Maxillary sinus lining epithelium
98- A bony hard asymptomatic swelling found on the midline of the hard palate, that appears radiopaque on radiograph is most likely:
A) Odontoma
B) Myxoma
C) Bony cyst
D) Torus palatinus
99- Static bone cyst is a cyst developing from:
A) Infection of salivary gland in the mandible
B) Tissue of the odontogenic apparatus
C) Tissue of the oral mucosa
D) None of the above
100- Failure of descend of thyroid analage can be seen in the tongue:
A) In anterior 2/3 of dorsal aspect
B) In posterior 1/3 of dorsal aspect
C) Near the base of tongue close to foramen caecum
D) In anterior 2/3 of inferior surface
101- Geographic tongue is of red color because of:
A) Infiltration of eosinophils
B) Infiltration of neutrophils
C) Both of the above
D) None of the above
102- Most characteristic feature of mandibulofacial dysostosis is:
A) Normal hearing
B) Normal vision with colobomata
C) Mandibular prognathism
D) Vertical maxillary excess
103- True about enameloma:
A) A globule like structure usually found on root due to misplaced ameloblast
B) true neoplasm of ameloblast
C) tumor resembling enamel present on gingiva
D) Tumor of ameloblast which fail to differentiate terminally
104- The fusion of the alveolar bone to a tooth is known as:
A) Hypercementosis
B) Gomphosis
C) Ankylosis
D) Gemination
105- All of following statements regarding amelogenesis imperfecta are true except:
A) An inherited condition which is transmitted as a dominant trait
B) Only affects the permanent teeth
C) cause the enamel of the teeth to be soft and thin
D) Teeth appear yellow, because the dentin is visible through the thin enamel
106- An enamel defect resulting from the incomplete formation of the enamel matrix is called:
A) Enamel pearls
B) Hypercementosis
C) Enamel hypoplasia
D) Dentin dysplasia
107- Lateral facial cleft may be associated with:
A) Pierre robin syndrome
B) Crouzon syndrome
C) Mandibulofacial dysostosis
D) Cleidocranial dysplasia
108- 85% of the commonly occurring natal teeth are:
A) Maxillary posteriors
B) Maxillary incisors
C) Mandibular posteriors
D) Mandibular incisors
109-All is true about caries except.....
A) Lactobacilli is the main causative organism of dental caries.
B) Smooth surface caries is due to streptococcus mutans.
C) pit and fissure caries can be prevented by using pit and fissure sealants.
D) Fluorides help in reducing caries incidence.
110-The lateral spread of dental caries is facilitated mostly by the.......
A) Enamel spindles
B) Dentinoenamel junction
C) Enamel lamellae
D) Striae of Retzius
111-The chief acid produced by enzymatic breakdown of carbohydrates by bacteria is........
A) Butyric acid
A) Butyric acid
C) Acetic acid
D) Lactic acid
112-Saliva has a buffering effect in dental caries due to....
A) Bicarbonates
B) Salivary immunoglobulin A
C) Lysozymes
D) Peroxides
113-All of the following are features of levan except.....
A) Water soluble
B) Storage for carbohydrates
C) Adhesive
D) Fructose polymer
114-The arch criminal of dental caries is.........
A) Fructose
B) Sucrose
C) Glucose
D) Starch
115-The experiment that proved the dental caries is a bacterial disease is..........
A) Vipeholm experiment
B) Miller experiment
C) Orland experiment
D) Both B & C
116-The intracellular polysaccharide used by bacteria in CHO deficiency is..........
A) Dextran
B) Levan
C) Amylopectin
D) Both A & B
117-The pioneer bacteria on dental pellicle is.........
A) Streptococcus mutans
B) Streptococcus sanguis
C) Lactobacillus
D) Both A & B
118-The critical PH that dental caries starts below is..............
A) 4.5
B) 6.5
C) 5.5
D) 7.4
119- The lateral extension of dentinal tubules due to proliferation of microorganism is called.....
A) Liquifaction foci
B) Beading
C) Transverse clefts
D) None of the above
120-Starch is considered to be less cariogenic than monosaccharides and disaccharides because it…
A) does not diffuse through plaque
B) is rapidly hydrolysed in the mouth
C) enhances remineralization
D) raises the PH in the oral cavity
121-Organism involved in smooth surface caries is: 1.Streptococcus Mutans 2.Actinomyces viscosus 3.Lactobacillus 4.Campylobacter
A) Only 1
B) Only 2
C) 1 & 3
D) All of the above
122-In patient with reduced salivary flow the caries incidence is:
A) more than the patient with normal salivary flow
B) less than the patient with normal salivary flow
C) unaffected
D) none of the above
123-The number of dentinal zones in dentinal caries is:
A) one
B) two
C) four
D) five
124-Widely accepted theory of dental caries is:
A) Proteolytic theory
B) Proteolosis chelation theory
C) Chemicoparasitic theory
D) Autoimmune theory
125-The correct order of microscopic zones of dentinal caries starting from the DEJ is:
A) Zone of sclerosis, decalcification zone, bacterial invasion
B) Bacterial invasion, decalcification zone, zone of sclerosis
C) Zone of sclerosis, bacterial invasion, decalcification zone
D) Decalcification zone, zone of sclerosis, bacterial invasion
126-The dietary carbohydrate most likely involved in etiology of dental caries is:
A) Glucose
B) Sucrose
C) Dextran
D) Polysaccharide
127-In the earliest stages of carious lesion, there is loss of:
A) Enamel cuticle
B) Interprismatic substance
C) Organic matrix
D) Enamel lamellae
128-Smooth surface caries is characterized by spread of caries in enamel and dentin as cones. These alignment in enamel and dentin is:
A) Base to base
B) Apex to base
C) Apex to apex
D) None of the above
129-Which tooth in the permanent dentition is the most susceptible to dental caries?
A) Maxillary first premolar
B) Maxillary second molar
C) Mandibular first molar
D) Mandibular second molar
130-Calcium Fluorapatite crystals have less solubility in acids than normal crystals. Lower anterior teeth have high caries index than upper anterior teeth.
A) Two sentences are correct
B) The first sentence is correct and the second is incorrect
C) The first sentence is incorrect and the second is correct
D) Two sentences are incorrect
131-In a caries free individual, the saliva has:
A) Low buffering capacity for acids
B) Medium buffering capacity for acids
C) High buffering capacity for acids
D) Caries incidence is independent of buffering capacity of saliva
132-Early invading bacteria in carious lesions are called:
A) Advancing bacteria
B) Anaerobic bacteria
C) Pioneer bacteria
D) Microcosm
133-Which of the following factors in the Stephan's curve is related to the caries incidence and sugar intake?
A) Physical form of sugar
B) Frequency of sugar intake
C) PH of plaque
D) Quantity of sugar intake
134-Animals maintained in a germ free environment fed on a high cariogenic diet did not develop caries. Is given by:
A) Miller
B) Snyder
C) Dorgham
D) Orland
135-The Pioneer bacteria which invade the dentin are:
A) Lactobacilli
B) Streptococcus mutans
C) Proteolytic bacteria
D) Acidogenic
136-From the options listed, which type of carbohydrate cannot give Stephan's curve:
A) Amylopectin
B) Starch
C) Glucose
D) Fructose
137-A caries increment of………. Or more new carious lesions over one year is considered characteristic of rampant caries.
A) 8
B) 5
C) 10
D) 15
138-Transverse clefts occur in incremental lines of Von Ebner because:
A) they are a product of a physiologic process
B) they represent cyclic activity of the odontoblasts during dentin formation
C) they occur at regular increments
D) They run almost perpendicular to the dentinal tubules
139-Beading occurs in affected dentin zone. The pellicle is cellular layer.
A) Two sentences are correct
B) The first sentence is correct and the second is incorrect
C) The first sentence is incorrect and the second is correct
D) Two sentences are incorrect
140-The zone which has 1% pores in early enamel caries is:
A) Translucent zone
B) Dark zone
C) Body of the lesion
D) Surface zone
141-Newly erupted teeth are hypermineralized and less susceptible to caries. Temperature is one of the factors implicated in dental caries.
A) Two sentences are correct
B) The first sentence is correct and the second is incorrect
C) The first sentence is incorrect and the second is correct
D) Two sentences are incorrect
142-Bacterial growth in a vertical direction forming columns of bacteria in:
A) Growth phase
B) Intermediate phase
C) Maturation phase
D) Colonization of the acquired pellicle phase
143-Eburnation of dentin is:
A) Large open and soft
B) Glossy and dry
C) Black leathery dentin
D) Brown and leathery dentin
144-Which type of Immunoglobulins is considered a component of saliva?
A) Ig G
B) Ig M
C) Ig E
D) Ig A
145. All of the below given factors are responsible for causing dental caries except
(a) Dental plaque
(b) Diet
(c) Microorganisms
(d) Temperature
146. According to miller, which of these acids was held responsible for producing the lesions of dental caries, according to Miller?
(a) Lactic acid
(b) Ascorbic acid
(c) Picric acid
(d) Citric acid
147. From the properties given below identify which one does render carbohydrates cariogenic?
(a) Rapid clearance from oral cavity
(b) Stickiness of carbohydrates
(c) Frequent ingestion of carbohydrates
(d) Simple carbohydrates
148. The factor that is least associated with increased incidence of dental caries is
(a) Carbohydrate rich diet
(b) Malposed tooth
(c) Smoking
(d) Quantity of saliva
149. Undermining of enamel occurs due to
(a) Lateral spread of caries midway between enamel and dentin
(b) Lateral spread of caries at the dentinoenamel junction
(c) Lateral spread of caries midway between dentin and pulp
(d) Spread of caries along dentinal tubules
150. The least likely location for occurrence of smooth surface caries is:
(a) Labial surface of maxillary incisors
(b) Proximal surfaces of all teeth
(c) Gingival 1/3rd of buccal surfaces of teeth
(d) Gingival 1/3rd of lingual surfaces of teeth
151. Which theory of dental caries proposes that organic elements in teeth are the initial pathway of invasion of microorganisms?
(a) Sucrose chelation
(b) Proteolytic
(c) Autoimmune
(d) Chemicoparasitic
152. Acute dental caries occurs most frequently in children and young adults because
(a) Dentinal tubules are scleroses in the teeth of young people
(b) The apex of root of teeth are not formed completely
(c) Dentinal tubules are narrower in diameter
(d) Dentinal tubules are larger, open and show no sclerosis
153. Absence of caries in _______ teeth helps to distinguish nursing bottle caries from rampant caries
(a) Maxillary canines
(b) Mandibular incisors
(c) Maxillary incisors
(d) Mandibular canines
154. Which type of caries is most likely to show considerable surface destruction, shallow cavity, little undermining of enamel and little or no pain?
(a) Chronic
(b) Acute
(c) Rampant
(d) Recurrent
155. The first change to occur in caries of enamel is
(a) Loss of rod enamel
(b) Loss of inter rod enamel
(c) Loss of rod sheath
(d) Increased prominence of enamel rods
156. Which surface of a tooth has maximum susceptibility for occurrence of dental caries?
(a) Occlusal
(b) Lingual
(c) Mesial
(d) Distal
157. In enamel caries, the advancing front of the lesion is called
(a) Body of lesion
(b) Dark zone
(c) Surface zone
(d) Translucent zone
158. Of all the zones in enamel caries which zone is not always present?
(a) Translucent
(b) Dark
(c) Body
(d) Surface
159. What is the earliest histological evidence of dentinal caries?
(a) Transparent dentin
(b) Fatty degeneration of odontoblastic processes
(c) Lateral spread of caries along dentino-enamel junction
(d) Miller’s liquefaction foci
160- Recurrent caries occurs due to all of the following factors except:
A) Inadequate extension of original restoration
B) Poor adaptation of the filling material
C) Recurrent bacterial attack
D) Poor margins permitting leakage
161-All are zones of enamel caries except:
A) Surface zone
B) Translucent zone
C) Body of the lesion
D) Zone of bacterial invasion
162- Which zone of enamel caries shows greatest demineralization?
A) Body of the lesion
B) Surface zone
C) Translucent zone
D) Dark zone
163- Positive zone of enamel caries is:
A) Surface zone
B) Dark zone
C) Body of the lesion
D) Translucent zone
164- Greatest concentration of fluoride is seen in which zone of enamel caries?
A) Surface zone
B) Dark zone
C) Body of the lesion
D) Translucent zone
165-All are zones of dentinal caries except:
A) Zone of sclerosis
B) Zone of decalcification
C) Zone of translucency
D) Zone of bacterial invasion
166- Which one of the following occurs earliest in caries of dentin?
A) Beading
B) Invasion of pioneer bacteria
C) Initial demineralization
D) Liquefaction foci
167- Which statement is true for dry socket ?
A) Traumatic extraction is the main cause
B) Stimulation of fibrinolysins
C) Contraceptives and pre-surgical infections
D) All of the above
168- Which of the following lesions if not treated most likely to cause periapical lesion ?
A) Internal resorption
B) Reversible pulpitis
C) Chronic hyperplastic pulpitis
D) Acute suppurative pulpitis
169- Which lesion in the oral cavity that can be complicated to a radicular cyst if untreated ?
A) Periapical granuloma
B) Periodontal abscess
C) Periapical abscess
D) All of the above
170- An acute periapical abscess is usually due to......
A) Periapical pocket
B) Occlusal interference
C) Necrotic pulp
D) Chronic gingivitis
171- Classification of pulpitis include the following except.....
A) Focal reversible pulpitis
C)Chronic pulpitis
B) Acute hyperplastic pulpitis
D) Acute pulpitis
172- The chief cells seen in acute periapical abscess are......
A) Macrophages
B) Lymphocytes
C) Multinucleated giant cells
D) Polymorphnuclear leukocytes
173- Radiographic examination of a tooth involved in acute periapical abscess shows.....
A) Well-circumscribed radiolucency
B) Well-circumscribed radiopacity
C) Mixed radiopaque and radiolucent lesion
D) Slight widening of the periodontal ligament space
174- A child complaining from a mass in his lower first molar which showed hyposensititivity in thermal and electric response.
A) Acute Pulpitis
B) Pulp hyperemia
C) Chronic hyperplastic pulpitis
D) Periapical granuloma
175- A patient presents with a painful tooth which he feels high in the oral cavity. The tooth was extremely sensitive to percussion. Regional lymphadenopathy was also present. The most likely diagnosis is .......
A) Periapical granuloma
B) Acute periapical abscess
C) Pulp polyp
D) Pulp hypermia
176- Dull aching type of pain is characteristic feature of .......
A) Focal reversible pulpitis
B) Pulp polyp
C) Chronic pulpitis
D) Acute Pulpitis
177- Cholesterol clefts may be found in histological examination of.........
A) Periapical granuloma
B) Periapical Abscess
C) Chronic pulpitis
D) Acute suppurative Pulpitis
178-Which of the following statements is false about focal reversible pulpitis?
A) Application of ice results in pain which doesn't subside with removal of the thermal stimulus.
B) Responds to electric pulp testing at a lower level of current than contralateral teeth.
C) Sensitivity to percussion is absent.
D) Dilatation of pulpal vessels.
179-Chronic hyperplastic pulpitis (pulp polyp) is essentially:
A) Necrotizing lesion.
B) Suppurative lesion.
C) Proliferation of inflamed pulp tissue.
D) Very sensitive and painful lesion.
180-The earliest response of pulpitis is:
A) Cyst formation.
B) Calcification.
C) Hyalinization.
D) Formation of dental granuloma.
181. The phenomenon by which bacteria circulating in blood accumulate at the site of pulpal inflammation is called as
(a) Chemotaxis
(b) Retrograde pulpitis
(c) Anachoretic pulpitis
(d) Aerodontalgia
182. Most accepted explanation for anachoretic pulpitis is
(a) Increased capillary permeability
(b) Increased vascular pressure
(c) Presence of large number of dilated capillaries
(d) Lack of collateral blood supply
183. The more accepted terminology for pulp hyperemia is
(a) Focal irreversible pulpitis
(b) Focal reversible pulpitis
(c) Subtotal pulpitis
(d) Pulpitis clausa
184. Focal reversible pulpitis is most commonly seen in all of the following cases except
(a) Large metallic restorations
(b) Shallow carious lesions
(c) Deep carious lesions
(d) Restorations with defective margins
185. Pain which increases in intensity as the patient lies down is characteristic of
(a) Focal reversible pulpitis
(b) Acute pulpitis
(c) Chronic hyperplastic pulpitis
(d) Chronic pulpitis
186. Microabscess formation within inflamed pulp is characteristic of
(a) Acute pulpitis
(b) Focal reversible pulpitis
(c) Chronic pulpitis
(d) Pulp hyperemia
187. Sensitivity to electric pulp vitality tester in acute pulpitis is lost in later stages because of
(a) initial Necrosis of pulp (degeneration of a delta fibers)
(b) Reduction in inflammatory exudate
(c) Increase in the size of capillaries locally
(d) Decreased secretion of prostaglandins
188. Which amongst the following characteristics is not associated with chronic hyperplastic pulpitis?
(a) Open carious lesion
(b) Occurs in children and young adults
(c) Occurs in people with high tissue resistance
(d) Occurs around margins of a restoration
189. Which teeth are most commonly involved by chronic hyperplastic pulpitis?
(a) Deciduous anteriors and permanent canines
(b) Deciduous molars and permanent 1st molars
(c) Deciduous canines and permanent incisors
(d) Exclusively deciduous molars
190. All of the following except _______ occur as a sequel to pulpitis.
(a) Lateral periodontal cyst
(b) Periapical granuloma
(c) Apical periodontal cyst
(d) Periapical abscess
191. All of the following except _______ are common radiological features associated with a periapical granuloma.
(a) Thickening of PDL around root apex
(b) Well-defined radiopacity
(c) Root resorption of involved tooth
(d) Well-defined radiolucency with sclerotic borders
192. Foam cells within periapical granulomas are ______ cells that have ingested lipids.
(a) Polymorphonuclear leukocytes
(b) Langerhans cells
(c) Macrophages
(d) Plasma cells
193. Apical periodontal cyst usually occurs as a sequela of
(a) Acute pulpitis
(b) Periodontal abscess
(c) Osteomyelitis
(d) Periapical granuloma
194. Which amongst the following is not a predisposing factor of osteomyelitis?
(a) Trauma to bone
(b) Radiation damage to bone
(c) Paget’s disease
(d) Fibrous dysplasia
195. Condensing osteitis is another name for
(a) Chronic suppurative osteomyelitis
(b) Chronic focal sclerosing osteomyelitis
(c) Chronic diffuse sclerosing osteomyelitis
(d) Garre’s osteomyelitis
196. In which type of osteomyelitis will you find focal gross thickening of periosteum with peripheral reactive bone formation?
(a) Chronic focal sclerosing osteomyelitis
(b) Chronic diffuse sclerosing osteomyelitis
(c) Florid osseous dysplasia
(d) Garre’s osteomyelitis
197. What term is applied to a radiolucent lesion within the alveolar ridge at the site of a previous tooth extraction?
(a) Lateral radicular cyst
(b) Lateral periodontal cyst
(c) Residual cyst
(d) Periapical abscess
198. If a periapical abscess drains intraorally through a sinus tract after perforating the buccal cortical plate and surface epithelium it forms a mass of granulation tissue known as
(a) Phoenix abscess
(b) Residual cyst
(c) Parulis
(d) Lateral radicular cyst
199. The lateral radicular cyst arises from
(a) Cell rests of Malassez
(b) Cell rests of Serres
(c) Overlying oral epithelium
(d) Dental lamina
200. Which of the following lesions cannot be differentiated from each other on the basis of size and radiographic appearance?
(a) Periapical granuloma from periapical cyst
(b) Periapical abscess from periapical cyst
(c) Periapical granuloma from periapical abscess
(d) Periapical cyst from phoenix abscess
201. Chronic apical periodontitis is another name of
(a) Phoenix abscess
(b) Periapical abscess
(c) Periapical granuloma
(d) Periapical cyst
202- In the radiographic picture of acute osteomyelitis which statement is true ?
A) Early osteomyelitis may show a normal radiographic appearance
B) Late osteomyelitis may show a normal radiographic appearance
C) Acute osteomyelitis doesn't appear radiographically
D) None of the above
203- Garre's osteomyelitis is characterizied clinically by ..........
A) Endosteal bone formation
B) Periosteal bone formation
C) Resorption of cortical bone
D) Resorption of medullary bone
204- In diffuse sclerosing osteomyelitis........
A) An inflammatory reaction in the mandible in response to a microorganism of low virulence
B) Show well defined radiolucency
C) Localized to deciduous teeth
D) All of the above
205- Onion skin appearance is a radiographic feature seen in ......
A) Acute pyogenic osteomyelitis
B) Chronic pyogenic osteomyelitis
C) Garrie's osteomyelitis
D) Diffuse sclerosing osteomyelitis
206- The radiographic examination of diffuse sclerosing osteomyelitis shows......
A) Onion skin appearance
B) Moth-eaten appearance
C) Multiple diffuse radiolucencies
D) Cotton wool appearance
207- The dead bone separated from the vital bone is defined as........
A) Involucrum
B) Sequestrum
C) Cloacae
D) A&B
208- Expansion of jaw bones is seen in:
A) Garre's Osteomyelitis
B) Chronic Diffuse sclerosing osteomyelitis
C) Chronic Focal sclerosing osteomyelitis
D) Chronic Suppurative osteomyelitis
209- Focal Sclerosing Osteomyelitis is:
A) Due to excessive periosteal bone formation
B) An extremely painful condition
C) Due to low grade chronic infection
D) A common sequel following sequestrectomy
210-Most common cyst in oral region is:
A) Radicular cyst
B) Medial cyst
C) Folliculastr cyst
D) Nasolabial cyst
211-Which of the following conditions is often associated with a vital pulp?
A) Apical cyst
B) Apical scar
C) Condensing osteitis
D) Chronic apical periodontitis
212- Osteomyelitis begins as an inflammation of:
A) Cortical bone
B) Periosteum
C) Medullary bone
D) Periosteum and inner cortex
213- A tooth with a 3 month history of pain, which was worse when hot liquids were in mouth. After extraction, the tooth was split open. The pulp chamber was completely filled with pus. A few remnants of pulp tissue were found in apical end. The condition is:
A) Acute partial pulpitis
B) Acute total pulpitis
C) Suppurative pulpitis
D) Strangulation of pulp
214- A person experiences throbbing pain at night. It's due to:
A) Acute pulpal degeneration
B) Acute periodontal abscess
C) Chronic pulpitis
D) Cellulitis
215- Reversible pulpitis change to irreversible pulpitis primarily because of:
A) Vascular strangulation
B) Reduced host resistance
C) Invasion of microorganisms
D) An increase in microbial virulence
216- The caries of enamel surface leads to accentuation of:
A) Incremental lines of Retzius
B) Perikymata
C) Imbrication lines of pickerill
D) Wickham's striae
217- Constant feature associated with a radicular cyst:
A) An impacted tooth
B) A missing tooth
C) A non vital tooth
D) An anomalous tooth
218- Best way to differentiate between periapical cyst and periapical granuloma is:
A) Radiophically
B) Histologically
C) Clinically
D) None of the above
219- Which of the following is more prone to osteomyelitis?
A) Maxilla
B) Zygoma
C) Palatine bone
D) Mandible
220- Tiny linear or arc-shaped bodies, amorphous, brittle and eosinophilic in reaction, found in association with some odontogenic cysts, are called:
A) Civatte bodies
B) Russell bodies
C) Guarneri bodies
D) Rushton bodies
221-Which of the following represents a soluble polyacrylamide found in dental plaque and is formed from the fructose moiety of sucrose?
A) Levan
B) Dextran
C) Amylopectin
D) Hyaluronic acid
222- A 30 year old patient with radiographic appearance of endosteal bone formation, sclerosed bone is likely to be suffered from?
A) Garre's osteomyelitis
B) Chronic focal sclerosing osteomyelitis
C) Acute osteomyelitis
D) Chronic osteomyelitis
223-What is usually associated with lateral periodontal cyst ?
A) Vital teeth
B) Non vital teeth
C) Periapical rarefaction
D) Diffuse osteitis
224- odontogenic keratocyst develops......
A) in place of missing tooth
B) in teeth after crown completed
C) in periapical region
D) salivary duct retention
225-Which of the following lesions exhibit ghost cells ?
A) Calcifying odontogenic cyst
B) Odontogenic keratocyst
C) Lateral developmental cyst
D) A & B
226-Rushton and Russell bodies are present in........
A) Odontogenic keratocyst
B) Periodontal cyst
C) Radicular cyst
D) Calcifying odontogenic cyst
227-The developmental cyst enclosing the tooth crown at the level of CEJ is.......
A) Gorlin cyst
B) Follicular cyst
C) OKC
D) Radicular cyst
228- All of the following can't be seen during the radiographic examination except......
A) Eruption cyst
B) Nasolabial cyst
C) Globulomaxillary cyst
D) Epidermoid cyst
229- Multiple dentigerous cysts can be seen in..........
A) Gardner syndrome
B) Cleidocranial dysplasia
C) Hereditary ectodermal dysplasia
C) Gorlin Goltez syndrome
230- The soft tissue counterpart of dentigerous cyst is .........
A) Gingival cyst
B) Lateral periodontal cyst
C) Gorlin cyst
D) Eruption cyst
231- which of the following may be a painful cyst ?
A) Traumatic bone cyst
B) Aneurysmal bone cyst
C) Incisive canal cyst
D) B&C
232-The radiographic inverted pear shape is a characterisic feature for..........
A) Incisive canal cyst
B) Nasolabial cyst
C) Globulomaxillary cyst
D) Gorlin cyst
233-All of the following are multilocular cysts except..............
A) Botryoid bone cyst
B) Aneurysmal bone cyst
C) OKC
D) Lateral periodontal cyst
234-The Scalloping radiolucency between roots of teeth is characterized for............
A) OKC
B) Traumatic bone cyst
C) Aneurysmal bone cyst
D) Botryoid odontogenic cyst
235- A cyst under the tongue caused by obstruction of major salivary gland duct is termed:
A) Mucocele
B) Dermoid cyst
C) Ranula
D) Dentigerous
236- Botryoid odontogenic cyst is a variant of:
A. Lateral periodontal cyst
B. Apiccal periodontal cyst
C. Gingival cysts of the newborn
D. Gingival cysts of adult
237-Eruption cyst:
A. Transforms into dentigerous cyst
B. Regresses after eruption of the tooth
C. Is found in the place of the missing tooth
D. Is a type of dentigerous teeth
238- One of them is not a true cyst:
A. Hemorrhagic cyst
B. Medial palatal
C. Globulomaxillary
D. Nasolabial
239- Dentigerous cyst is likely to cause which neoplasia ?
A. Ameloblastoma
B. Osteogenic sarcoma
C. Osteosarcoma
D. Osteoclastoma
240-Odontogenic Keratocyst has the following feature:
A. Occurs due to infection periapically
B. Is developmental in origin
C. Can be treated by aspiration
D. Has low recurrence rate
241-Multiple odontogenic keratocyst are associated with:
A. Gardner's syndrome
B. Gorlin-Goltz Syndrome
C. Goldenhar's Syndrome
D. Grinspan syndrome
242- After entering a radiolucent lesion in a 30 yr old man, hollow cavity without epithelial lining is seen, the most probable diagnosis is :
A. Aneurysmal bone cyst
B. Static bone cavity
C. Hemorrhagic bone cyst
D. Ameloblastoma
243- The cyst that remains behind in the jaws after removal of the tooth is :
A. Lateral periodontal cyst
B. Radicular cyst
C. Residual cyst
D. None of the above
244-A median palatal cyst arises from:
A. Epitheliun entrapped along the line of fusion of palatal processes of maxilla
B. Cystic degeneration of remnants of nasopalatine duct
C. Cystic degeneration of rests of dental lamina
D. Cystic degeneration of epithelial rests of Malassez
245-Which of the following cysts is considered to be a soft tissue counterpart of lateral periodontal cyst?
A.Gingival cyst of newborn
B. Radicular cyst
C. Calcifying Odontogenic cyst
D. Gingival cyst of adults
246-A well defined radiolucent lesion attached to the neck of an impacted mandibular third molar in a 20 year old male is most likely to be:
A. Dentigerous cyst
B. Odontogenic Keratocyst
C. Lateral Periodontal cyst
D. Calcifying Odontogenic cyst
247-Which of the following lesions resemble frog's belly?
A. Dermoid cyst
B. Ranula
C. Branchial cleft cyst
D. Thyroglossal tract cyst
248-Which of the following is not a radiographic variety of dentigerous cyst?
A. Central
B. Collateral
C. Lateral
D. Circumferential
249-A cyst resembling a punch of grapes is termed:
A.OKC
B. Dentigerous cyst
C. Botryoid Odontogenic cyst
D. Glandular Odontogenic cyst
250-A Mucocele is not a true cyst because:
A. It is lined by epithelium
B. Its lumen is filled with pus
C. It occurs as a result of trauma
D. It is not lined by epithelium
251. A dentigerous cyst develops due to collection of fluid between _________ and tooth surface.
(a) Reduced dental epithelium
(b) Stellate reticulum
(c) Internal dental epithelium
(d) External dental epithelium
252. The tooth most commonly involved by dentigerous cyst is
(a) Maxillary canine
(b) Maxillary 3rd molar
(c) Mandibular 2nd premolar
(d) Mandibular 3rd molar
253. Which one of the following odontogenic cysts grows in an anteroposterior direction within the medullary spaces of bone?
(a) Dentigerous cyst
(b) Odontogenic keratocyst
(c) Gingival cyst of adults
(d) Radicular cyst
254. All of the following statements except _______ are true regarding odontogenic keratocyst
(a) Seen primarily in mandibular molar—Ascending ramus region
(b) Epithelial lining is thin and friable
(c) Originates from cell rests of Malassezia
(d) Epithelial lining is keratinized
255. Which one of the following is an important factor in the recurrence of odontogenic keratocysts?
(a) Presence of exudate in the cyst lumen
(b) Presence of inflammation in connective tissue wall
(c) Friable and thin epithelial lining
(d) Development of new cysts from the cell rests of Malassezia in the vicinity
256. All of the following except _____________ are examples of developmental odontogenic cysts.
(a) Radicular cyst
(b) Calcifying odontogenic cyst
(c) Gingival cyst of adults
(d) Lateral periodontal cyst
257. A primordial cyst is now believed to represent
(a) Calcifying odontogenic cyst
(b) Odontogenic keratocyst
(c) Lateral periodontal cyst
(d) Botryoid odontogenic cyst
258. Small, superficial, keratin filled cysts that are found on the alveolar mucosa of infants are most likely to be
(a) Median mandibular cyst
(b) Nasopalatine duct cyst
(c) Gingival cyst of the newborn
(d) Eruption cyst
259. Spot the only fissural/inclusion cyst amongst the below given cysts
(a) Lateral periodontal cyst
(b) Nasopalatine duct cyst
(c) Glandular odontogenic cyst
(d) Dentigerous cyst
260. A smooth, translucent swelling on gingival mucosa overlying the crown of an erupting tooth is suggestive of
(a) Parulis
(b) Eruption cyst
(c) Gingival cyst of adults
(d) Gingival cyst of newborn
261. Carcinoma arising within the odontogenic cyst linings is a complication seen most commonly in which cyst?
(a) Dentigerous cyst
(b) Odontogenic keratocyst
(c) Lateral periodontal cyst
(d) Radicular cyst
262. Gorlin cyst is more commonly referred to as
(a) Odontogenic keratocyst
(b) Calcifying odontogenic cyst
(c) Lateral periodontal cyst
(d) Glandular odontogenic cyst
263. Histological features of thin epithelial lining, ameloblast-like basal cell layer with overlying layers resembling stellate reticulum and abundant ghost cell within the epithelial lining are suggestive of
(a) Dentigerous cyst
(b) Radicular cyst
(c) Calcifying odontogenic cyst
(d) Odontogenic keratocyst
264. A swelling of the upper lip lateral to the midline resulting in elevation of the ala of the nose is most likely to be
(a) Nasopalatine duct cyst
(b) Nasolabial cyst
(c) Medial mandibular cyst
(d) Globulomaxillary cyst
265. Spot the only inflammatory odontogenic cysts amongst the below given cysts
(a) Calcifying odontogenic cyst
(b) Odontogenic keratocyst
(c) Lateral periodontal cyst
(d) Buccal bifurcation cyst
266. Select a false statement regarding calcifying odontogenic cyst from below given statements
(a) Numerous ghost cells are seen in connective tissue wall
(b) It is seen mostly in the anterior maxilla and mandible
(c) Usually associated with an impacted/unerupted tooth
(d) Cyst lining appears ameloblastomatous
267. Microscopic features of ___________ in some areas sometimes resemble those of a low grade mucoepidermoid carcinoma.
(a) Buccal bifurcation cyst
(b) Nasopalatine duct cyst
(c) Sialo-odontogenic cyst
(d) Gingival cyst of the newborn
268- Which histological type of odontogenic keratocyst is commoner, more invasive and has a greater tendency for recurrence?
A) Orthokeratinized
B) Parakeratinized
C) Non-keratinized
D) Diskeratinized
269- The pathogenesis of periapical cyst is?
A) Increased pressure within the cyst
B) Immune mediated bone destruction
C) Proliferation of epithelium
D) None
270- Potential complications stemming from dentigerous cyst are:
A) Ameloblastoma
B) Epidermoid carcinoma
C) Mucoepidermoid carcinoma
D) All of the above
286. Trisomy 21 syndrome is better known as _______ syndrome.
(a) Down
(b) Apert
(c) Klinefelter
(d) Ehlers-Danlos
296. Delayed eruption of teeth occurs in:
A) Craniofacial dysostosis
B) Hyperthyroidism
C) Cleidocranial dysostosis
D) Osteitis deformans
303. Slanting eyes, decrease of the sexual development, macroglossia and enamel hypoplasia are seen in:
A) Craniofacial dysostosis
B) Down's syndrome
C) Treacher collin's syndrome
D) Marfan's syndrome
312. Coppor beaten appearance in skull radiographs is seen in patients affected with:
A) Pierre robin syndrome
B) Treacher collins syndrome
C) Carpenter syndrome
D) Melkerson Rosenthal syndrome
313. Diastema is a common sequla of:
A) Mesiodens
B) Paramolar
C) Distomolar
D) Peg-shaped lateral
314. Regarding to root caries one senctence is correct when compared to coronal caries:
A) Caries progression is slower in outer layer
B) Caries progression is faster in outer layer
C) Caries progression is same in both types
D) Caries progression is faster below the gingival margin in pockets
315. In pathogenesis of dilaceration, the position of............is changed.
A) The uncalcified part
B) The calcified part
C) The whole tooth
D) The adjacent tooth
316. Cheilitis glandularis typically occurs on the:
A) upper lip
B) Lower lip
C) Soft palate
D) Gingiva
317. Red macular appearance of oral mucosa is seen in patients affected with:
A) Cheilitis granulomatosa
B) Cheilitis glandularis
C) Erythema migrans
D) Fordyce's granules
318. Taurodontism is characterized by:
A) Enlargement of tooth trunk
B) Enlargement of roots
C) Enlargement of tooth crown
D) Enlargement of the whole tooth
319. Crescent shaped pulp chambers are seen in:
A) Dentinogenesis imperfecta I
B) Dentinogenesis imperfecta II
C) Dentin dysplasia I
D) Dentin dysplasia II
321. Old age appearance is common in patients affected by:
A) Cleidocranial dysplasia
B) Down syndrome
C) Streeter syndrome
D) Gardner syndrome
322. Among the environmental factors involved in the etiology of facial clefts is:
A) Corticosteroid use
B) Viral infection
C) Tetracycline administration
D) Excess water fluoridation
323. Phoenix abscess is:
A) An acute exacerbation of a chronic periapical inflammatory lesion
B) A chronic exacerbation of a acute periapical inflammatory lesion
C) Transformation of periapical granuloma to a cyst
D) Transformation of periapical abscess to periapical granuloma
324. Which sentence is wrong?
A) The cervical caries almost always occurs as an open cavity
B) The progression of caries in big cavity of pits and fissure is faster than pinpoint pits and fissure cavity
C) Interproximal caries begins just below the contact point and appears in initial stages as a faint white opacity
D) The gingival one third caries is crescent in shape
325. Gingival cyst of the adult has the predilection to occur in?
A) Maxillary canine premolar area
B) Mandibular canine premolar area
C) Maxillary premolar molar area
D) Mandibular premolar molar area
326. Progression of dental caries on pit and fissures occur from:
A) Apex of the pit and fissure
B) wide end of the pit and fissure
C) Lateral surface of the pit and fissure
D) Bottom of the pit and fissure
327. Enameloma is considered a type of:
A) Hamartoma
B) Ectopia
C) Nevi
D) Inflammation
328. Hereditary gingival fibromatosis is:
A) Local factor for early eruption
B) Systemic factor for early eruption
C) Local factor for delayed eruption
D) Systemic factor for delayed eruption
329. One of the following is not a predisposing factors for a dry socket:
A) Smoking
B) Oral contraceptive pills
C) Bone pathology
D) Atraumatic extraction
330. Aerodontalgia occurs with:
A) Recently filled teeth or teeth affected by acute pulpitis
B) Recently filled teeth or teeth affected by hyperemia
C) Recently filled teeth or teeth affected by Pulp polyp
D) Recently filled teeth or teeth affected by bacteria
331. Globulomaxillary cyst is:
A) A soft tissue cyst between maxillary lateral incisor and cuspid teeth
B) A bony cyst between maxillary lateral incisor and cuspid teeth
C) A bony cyst found in the midline of the palate
D) A cyst found in incisive canal
332. Dentin dysplasia is an acquired defect of dentin structure. Type II is more common than type I.
A) Both statements are true
B) Both statements are false
C) The 1st is true while the 2nd is false
D) The 1st is false while the 2nd is true
334. The position at which dilaceration occurs depends on:
A) The amount of the tooth calcified when the injury occurred
B) The direction of trauma
C) The intensity of trauma
D) The shape of the tooth
337. The etiology for occurrence of self-strangulation in pulpitis is: (معلش عارف إن إجابات كتير صح لكن الدكتورة عايزة السبب المباشر اللي هيأدي للمشكلة)
A) Constricted apical foramen
B) Absence of collateral circulation
C) The pulp is enclosed within a hard dentin chamber
D) Edema on blood vessels
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