Part 2 121-180

121. What bacteria are associated with localized juvenile periodontitis?

fusospirochetal complex (fusiform bacteria and spirochetes).

P. gingivalis

Actinobacillus actinomycetemcomitans,

Fusobacterium nucleatum and Prevetella intermedia

Bacteroides forsythus, Eikenella corrodens, and Treponema denticola.

122. What is the first cellular line of defense of the body against the periopathogens?

123. Which area of the oral cavity has the least amount of attached gingiva?

124. What is the crown-to-root ratio in a healthy dentition?

As a general rule, the crown-to-root ratio in a healthy dentition is 1:2 (for each tooth).

As a general rule, the crown-to-root ratio in a healthy dentition is 1:1 (for each tooth).

As a general rule, the crown-to-root ratio in a healthy dentition is 2:1 (for each tooth).

As a general rule, the crown-to-root ratio in a healthy dentition is 1:3 (for each tooth).

125. What is the primary symptom of root sensitivity?

The primary symptom is sensitivity to cold

the primary symptom is sensitivity to hot

All of the above

Non of the above

126. A high lip line can have a multifactorial etiology?

Osseous

Muscular

Dental

All of the above

127. Crown lengthening is best performed by ?

Gingival resection and harmonization with or without osseous resection in natural passive eruption

Gingival resection and harmonization with osseous resection in delayed passive eruption

All of the above

None of the above

128. The dento-gingival restorative interface is average dimension extending from the free gingival to the redeveloped bone of ?

2mm

3mm

4mm

None of the above

129. Which of the following statements is not true for the marginal incision technique ?

It is an easy procedure

It is surgically safe

It is suitable for most situations

Good bleeding control can be achieved when the marginal incision technique is performed

Flaps elevated after marginal incisions never need sutures

130. Which of the following aspects does not have to be considered in postsurgical wound infection protocol?

131.The mental nerve can frequently be found ?The

134. The Lingual nerve ?

Can never be hurt during dental procedure

Is important for the mobility of the tongue

Is a branch of the mental nerve

Can easily be injured when cutting too lingually in the molar area

Is very sturdy and recovers quickly from injury

135. Which of the following techniques refer to autogenous soft tissue grafting?

Free gingival graft

Connective tissue onlay graft

Vascularized interposition connective graft

All of the above

136. Acellular dermal grafts work best when they are completely submerged beneath a mucoperiosteal flap during healing. ?

True

False

137. Which of the following is NOT a function of a provisional restoration ?

It communicates the desired gingival margin to the surgeon

It allows the patient to evaluate esthetics

It may acts as a permanent restoration

It allows the patient to evaluate phonetics

138. Autografts refer to ?

The transplantation of tissue from one individual to a different individual

The transplantation of tissue from one individual to the same individual

The transplantation of tissue from an animal to an individual

139. For human patients, all of these could be sources of xenografts except?

Pigs

Cows

Humans

Horses

140. In debriding a root surface for a soft tissue graft, which of the following could be used to treat the root surface?

Tetracycline

EDTA

Citric Acid

All of the Above

141.Which of the following affects the % of root coverage following root coverage surgery the MOST? Which

The height of the interproximal bone

The amount of gingival recession

The tooth morphology

The position of the tooth in the arch

142. Following root coverage surgery on a tooth, what is the suggested healing period before making the final impression for the final restoration?

3 days

1 week

4 weeks

12 weeks

143. Which statement are true?

Supragingival plaque consists mostly of anaerobes and facultative bacteria (mostly gram-positive)

Subgingival plaque consists mostly of aerobes and facultative bacteria (mostly gram positive)

Subgingival plaque consists mostly of anaerobic bacteria (frequently gram-negative) 0

Supragingival plaque consists mostly of anaerobes and facultative

144. What pathway do nonsteroidal anti-inflammatory drugs (NSAIDs) block?

NSAIDs block the cyclooxygenase metabolism of arachidonic acids.

NSAIDs block the anaerobic bacteria

NSAIDs block the both cyclooxygenase and anaerobic bacteria

None of above

145. In order to maintain proper biologic width after crown lengthening, crown preparation between the margin of the preparation and the crest of bone should be ?

2mm

3mm

4mm

5mm

146. There are a number of ways to control bleeding at the donor site, which one is first indicate to apply:?

Suturing (tie off the bleeders)

Collagen with or without stent

Pressure with a tea bag

Vasoconstriction (epinephrine in the local anesthetic)

Pressure with a moistened gauze

147. What is the primary reason for failure of free gingival graft?

Infection

Disruption of the vascular supply before engraftment.

Thickness of free gingival graft is too thick

Suturing techniques

148. What medications may affect salivary flow?

149. When should a soft tissue graft be considered as an appropriate treatment of gingival recession?

Probing extents beyond the mucogingival junction

Abnormal frenum attachment

Root sensitivity, root caries

All of the above

150. We need to consider which of the following in the treatment of refractory periodontal disease ?

151. In the use of antibiotics in the treatment of adult periodontitis the following statements is ture ?

Antibiotics should routinely be used in initial and maintenance treatment of adult periodontitis

There is no evidence that antibiotics are of any use in the treatment of adult periodontitis therefore their use is never indicated

Diagnostic cultures are important in any case where it is propose that we use antibiotics

In a small subset of the population of patients who exhibit adult periodontitis such as those with refractory periodontal disease and rapidly progressive periodontitis there is benefit from the use of antibiotics and Diagnostic cultures are important in any case where it is propose that we use antibiotics

152. In terms of the treatment of the adult periodontitis patients: ?

The use of surgery in the treatment regimen is essential

The use of antibiotics in the treatment regimen is essential

The combined use of surgery and antibiotics proves increasingly effective in the treatment of these patients

All adult periodontitis patients can be treated successfully with scaling and root cleaning with or without surgery or antibiotic

153. In an adult patient with chronic adult periodontitis the most successful approach to treatment is?

Surgery

Extreme initial treatment followed by reviews every year

Initial periodontal therapy followed by maintenence therapy alone

All are corrects

154. The cell surface components or adhesive molecules of bacteria that interact with a variety of host componentsand responsible for recognizing and binding to specific host cell receptors?

Cadherins

Adhesins

Cohesins

Fimbriae

155. Thin aggregative fimbriae expressed on the outer surface of some Enterobacteriaceae such as Escherichia and Salmonella which promote bactrial adhesion and invasion to host as well as biofilm formation?

Pili

Curli

Dentilisin

Lectin

156. In the gingival epithelium the Keratinocytes are interconnected by structures on the cell periphery called ?

Keratinosomes

Melanosomes

Desmosomes

Lysosomes

157. Epithelium of gingival sulcus is?

Keratinised

Parakeratinised

Non keratinised

Pseudo columnar

158. Connective Tissue of Gingiva is also known as ?

Lamina lucida

Lamina Propria

Lamina densa

Lamina limitans

159. A Gene mapping technique that tests whether one allele of a gene occurs more often in patients with the disease than in subjects without disease ?

Segregation analysis

Genome wide analysis

Candidate gene approach

Twin study

160. The prevalance extent and severity of gingival recession ?

Increases with age and more prevalent in males

Increases with age and more prevalent in females

Decreases with age and more prevalent in males

Decreases with age and more prevalent in females

161. The vesiculobullous lesion which presents with an occular involvement?

Erosive lichen planus

Mucous membrane Pemphigoid

Bullous Pemphigoid

Pemphigus Vulgaris

162. Does of steroids in treatment of Pemphigus Vulgaris is monitered by periodic evaluation of?

DsG3 and DsG1 antibodies

DsG2 and DsG4 antibodies

DsG4 and DsG2 antibodies

DsG1 and DsG2 antivodies

163. Lichen planus is an immunologically mediated mucocutaneous disorder in which?

T lymphocytes play a cental role

B lymphocytes play a central role

Compliments play a central role

Antibodies play a central role

164. Highly vascularised connective tissue with foci of chronic inflammatory cells is seen in which drug inducedgingival enlargement?

Phenytoin

Cyclosporin

Nifedipine

Valproate

165. Which of the benign tumors of gingiva has more incidence?

Fibroma

Carcinoma

Papilloma

Giant cell tumor

166. Stages in the progression of NUG was decribed by?

Pindborg

Mc Carthy

Plaut & Vincent

Listgarten

167. Zone 3 in election microscopy of NUG correspond to ?

Neutrophil rich zone

Bacterial zone

Necrotic zone

Zone of spirochetal infiltration

168. Most commonest mucocutaneous disease manifesting as desquamative gingivitis?

Pemphigus vulgaris

Linear lgA disease

Erosive lichen planus

Lupus erythematosus

169. In periodontal pocket, zone of attachment of junctional epithelium to the tooth is reduced to?

500μm

More than 200μm

300 μm

Less than 100 μm

170. The distance from the attached plaque to the bone is never more than?

2.7 mm

0.5 mm

1.97 mm

2 mm

171. Which inflammatory marker in increased in periodontitis which may act as intermediary step in pathway from periodontal infectiont to cardiovascular disease?

MMP

CRP

PAMP

172. Presence or worsening of periodontal disease during pregnancy is associated with increased risk of preeclampsia about?

2-2.5 fold

7 fold

10 fold

5 fold

173. Which drug can be given for reducing AGE production?

Penicillin

Tetracycline

Cephalosporin

Macrolide

174. Which of the following suture alleviates the wicking effect?

Plain gut

braided silk

polyster braided

poly glycolic braided

175. What anatomic structure is the medial wall of maxillary sinus?

alveolar process

lateral wall of maxilla

Lateral wall of nasal cavity

floor of orbit

176. Periocol contains?

tetracycline

metronidazole

Chlorhexidine

azithromycin

177. Piggy back fulcrum is a type of?

Intra oral finger rest

extraoral finger rest

pen grasp

modified pen grasp

178. Evalusite is?

automated probing system

chair side DNA prode

Chair side membrane immune assay

GCF measuring system

179. Anatomic crown in relation to thick gingival biotype is?

traingular

oval

Square

elliptical

180. Chair side kit for BANA test is?

Perioscan

perioscope

periocheck

periogard

Part 2 121-180

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