D.D. of Hard tooth structures

Name:
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 Imperfecta 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. 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
28-Which of the following isn't hereditary ?
A)Amelogenesis Imperfecta
B)Cleidocranial Dysostosis
C)Regional Odontodysplasia
D)Dentinogenesis Imperfecta
29-Complete obliteration of pulp is seen in all except….
A)Dentin Dysplasia I
B)Type I Dentinogenesis Imperfecta
C)Type II Dentinogenesis Imperfecta
D)Type III Dentinogenesis Imperfecta
30- 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
31- 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
32- 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
33- Lavender teeth is a term given for…………….
A) Tetracycline discoloration
B) Dental Fluorosis
C) Congenital Porphyria
D) Necrotic teeth
34-The intestinal Polyps in……….... Are considered premalignant condition.
A) Cleidocranial dysplasia
B) Hereditary ectodermal dysplasia
C) Peutz Jegher Syndrome
D) Gardner's Syndrome
35-Multiple Dentigerous cysts occur in…………..
A) Gardner's Syndrome
B) Hereditary ectodermal dysplasia
C) Peutz Jegher Syndrome
D) Cleidocranial dysplasia
36-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
37-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
38-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
39-Thistle tube appearance of the pulp is characteristic of………
A) Amelogenesis Imperfecta
B) Dentinogenesis Imperfecta
C) Coronal dentin dysplasia
D) Radicular dentin dysplasia
40-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
41-Which of these structures is not affected in hereditary ectodermal dysplasia?
A) Enamel
B) Bones
C) Hair
D) Sweat glands
42-Talon cusp is a characteristic of which syndrome?
A) Pierre Robin Syndrome
B) Melkerson Rosenthal Syndrome
C) Rubinstein Taybi Syndrome
D) Down Syndrome
43-Crescent shaped pulp chambers are seen in:
A) Dentinogenesis imperfecta I
B) Dentinogenesis imperfecta II
C) Dentin dysplasia I
D) Dentin dysplasia II
44-Diastema is a common sequla of:
A) Mesiodens
B) Paramolar
C) Distomolar
D) Peg-shaped lateral
45-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
46-The tooth most commonly affected by ankylosis is:
A) Primary first molar
B) Primary second molar
C) Permanent first molar
D) Permanent second molar
47-Old age appearance is common in patients affected by:
A) Cleidocranial dysplasia
B) Down syndrome
C) Streeter syndrome
D) Gardner syndrome
48-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
49-Enameloma is considered a type of:
A) Hamartoma
B) Ectopia
C) Nevi
D) Inflammation
50-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
51-The tooth affected with gemination is considered macrodontia:
A) True
B) False
52-Fusion of dentin is mandatory for diagnosis of concrescence:
A) True
B) False
53-Hypodontia is most commonly associated with macrodontia:
A) True
B) False
54-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
55-Fusion of teeth involves a confluence of
(a) Enamel only
(b) Enamel and dentin
(c) Dentin only
(d) Cementum only
56-The base of invagination of crown/root in dens invaginates contains
(a) Dystrophic dentin
(b) Dystrophic enamel
(c) Necrotic pulp tissue
(d) Dystrophic cementum
57-Which amongst the following diseases is capable of producing developmental alterations in teeth?
(a) Tetanus
(b) Chickenpox
(c) Diphtheria
(d) Syphilis
58-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
59-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
60-Dentinogenesis Imperfecta is:
A) Autosomal dominant
B) Autosomal recessive
C) Sex linked recessive
D) Not a inheritable trait
61-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
62-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
63-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
64-In children the most frequently missing permanent teeth are:
A) First permolars
B) Second premolars
C) Max. Lateral incisors
D) Mandibular lateral incisors
65-Odontodysplasia is most common in:
A) Mandibular premolar
B) Mandibular canine
C) Mandibular third molar
D) Maxillary central incisor
66-Dens in dente is most commonly seen in:
A) Premolars
B) Paramolars
C) Lateral incisors
D) Maxillary canine
67-Taurodontism is usually seen in:
A) Mesiodens
B) incisor with talon cusp
C) Mandibular first molar
D) Maxillary premolars
68- 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
69- The fusion of the alveolar bone to a tooth is known as:
A) Hypercementosis
B) Gomphosis
C) Ankylosis
D) Gemination
70- 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
71- 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
72- 85% of the commonly occurring natal teeth are:
A) Maxillary posteriors
B) Maxillary incisors
C) Mandibular posteriors
D) Mandibular incisors
73. Taurodontism is characterized by:
A) Enlargement of tooth trunk
B) Enlargement of roots
C) Enlargement of tooth crown
D) Enlargement of the whole tooth
74. Multiple dentigerous cysts are associated with:
A. Gardener syndrome
B. Gorlin Goltz syndrome
C. Streeter syndrome
D. Cleidocranial dysplasia
75. Multiple Dermoid & epidermoid cysts are associated with:
A. Gardener syndrome
B. Gorlin Goltz syndrome
C. Streeter syndrome
D. Cleidocranial dysplasia
76. The conical accessory teeth existed between the maxillary centrals are called
A. Bull teeth
B.Paradental teeth
C. Tulip teeth
D.Mesiodens
77. Teeth affected with fluorosis are liable to caries
A) True
B) False
78. Enameloma is the synonym of keratin pearls of tooth
A) True
B) False
79. Tooth with dilaceration are indicated for endodontic treatment
A) True
B) False
80- Microdontia of the upper lateral incisor is called peg shaped lateral
A) True
B) False
81. Dense in dent affected teeth are highly liable to caries
A) True
B) False
82. Intestinal adenocarcinoma (Cancer) is the main cause of death in Gardner's syndrome
A) True
B) False
83. In hypoplastic amelogenesis imperfecta, the basic defect is in:
A. Inadequate deposition of enamel matrix.
B. Inadequate mineralization of enamel matrix
C. Inadequate deposition of dentin
D. Inadequate formation and maturation of both enamel and dentin
84. A permanent tooth with a local hypoplastic deformity in a crown is called:
A. Turner's tooth
B. Taurodontism
C. Enameloma
D. Ghost teeth
86. Dentinogenesis Imperfecta differs from amelogenesis imperfecta in that, the former is:
A. A hereditary disturbance
B. The result of excessive fluoride ingestion
C. The result of faulty enamel matrix formation
D. Characterized by calcification of pulp chambers and the root canals of the teeth
87. Most common missing tooth in the permanent dentition is:
A. Maxillary canine
B. Maxillary first molar
C. Mandibular second premolar
D. Mandibular first molar
88. Taurodontism is characterized by:
A. Hypercementosis
B. Elongated wide pulp chamber and short roots
C. Obliterated pulp chambers with secondary dentin deposition
D. Rootless teeth with thin shell of enamel
89. A developmental abnormality characterized by presence of fewer than the usual number of teeth is:
A. Anodontia
B. Oligodontia
C. Microdontia
D. Dens in dente
90. Which of the following is unlikely to cause enamel hypoplasia?
A. Fluoride
B. Congenital syphilis
C. Cleidocranial dysplasia
D. Rickets
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