Periodontology/Assi.Prof.Sok Chea 101-150

101. Biobrane is a commercially available?

σ� Biodegradable membrane

σ� Root matrix protein

σ� Bone graft material

σ� Non-bone graft material

102. In which of the following procedures, periodontal pack is not given?

σ� GTR procedures without osseous transplants

σ� Gingivectomy

σ� Osteoplasty procedure

σ� Osteoimplants with reattachment procedures

103. The only valid method to assess periodontal regeneration is?

σ� Histologic analysis

σ� Reentry operation

σ� Clinical attachment level

σ� Radiographic analysis

104. Glickman classified furcation involvement into 4 grades based on?

105. The primary aetiologic factor in the development of furcation defect is?

σ� Plaque

σ� Calculus

σ� Cemental caries

σ� Root infection

106. Root commonly removed in maxillary first molar during hemisection or root section is?

σ� Distobuccal

σ� Palatal

σ� Mesiobuccal

σ� None of the above

107. Commonly involved tooth with furcatin involvement is?

σ� Mandibular first permanent molar

σ� Maxillary first permanent molar

σ� Maxillary first permanent premolar

σ� Mandibular first permanent premolar

108. What is the most advantage of full thickness flap when compared to a partial thickness flap?

σ� Cortical bone is exposed

σ� Easier to do flap raising

σ� Less chance of flap laceration

σ� Easier to suture

109. What is the basic principle of intra-oral suturing?

110. What is the most common indication for Coronally Positioned Flap?

111. What kind of tissues should compose of Full Thickness Flap?

σ� Epithelium, Connective Tissue, and Periosteum

σ� Epithelium, Connective Tissue

σ� Epithelium only

σ� Periosteum only

σ� Connective Tissue, and Periosteum

112. What is the main indication for using a Sling Suture?

σ� When only buccal flap is elevated

σ� When buccal and lingual flaps are elevated

σ� When buccal and palatal flap are elevated

σ� All of the above

σ� Non of the above

113. What are common indications for Apically Positioned Flap?

114. What are advantages of a positive knot when compared to a negative knot?

115. What kind of tissues should compose a Partial Thickness Flap?

σ� Epithelium, Connective Tissue

σ� Epithelium only

σ� Periosteum only

σ� Connective Tissue, and Periosteum

σ� Epithelium, Connective Tissue, and Periosteum

116. Where should releasing incisions be placed?

117. What is (are) the most important anatomical structures to be respected during surgery?

118. What immunologic cells are typically found in the healthy periodontium?

σ� polymorphonuclear neutrophils (PMNs), mast cells, macrophages

σ� T-cell, Plasma cell and B cell

σ� polymorphonuclear neutrophils and Plasma cell

σ� polymorphonuclear neutrophils (PMNs), mast cells, T cell and B cell

119. Which bony defect is most likely to repair or fill naturally after treatment?

σ� Three-wall periodontal defects

σ� Two wall periodontal defects

σ� One wall Periodontal defects

σ� All above are repaired or filled naturally after treatment

120. What bacteria are associated with ANUG?

σ� fff. Fusospirochetal complex (fusiform bacteria and spirochetes).

σ� P. gingivalis

σ� Actinobacillus actinomycetemcomitans,

σ� Fusobacterium nucleatum and Prevetella intermedia,

σ� In the limit with enamel

121. What bacteria are associated with localized juvenile periodontitis?

σ� Actinobacillus actinomycetemcomitans,

σ� P. gingivalis

σ� fusospirochetal complex (fusiform bacteria and spirochetes).

σ� Fusobacterium nucleatum and Prevetella intermedia

σ� 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?

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

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

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

σ� 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?

σ� the primary symptom is sensitivity to cold

σ� the primary symptom is sensitivity to hot

σ� All of the above

σ� Non of the above

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

σ� All of the above

σ� Dental

σ� Muscular

σ� Osseous

127. Crown lengthening is best performed by ?

σ� All of the above

σ� Gingival resection and harmonization with osseous resection in delayed passive eruption

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

σ� None of the above

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

σ� 3mm

σ� 2mm

σ� 4mm

σ� None of the above

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

σ� Flaps elevated after marginal incisions never need sutures

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

σ� It is suitable for most situations

σ� It is surgically safe

σ� It is an easy procedure

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 ?

σ� Between the first and second premolar

σ� In the proximity of the molars

σ� In the incisor area

σ� Close to the alveolar crest

σ� Too apically to ever be injured

134. The Lingual nerve ?

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

σ� Is very sturdy and recovers quickly from injury

σ� Is a branch of the mental nerve

σ� Is important for the mobility of the tongue

σ� Can never be hurt during dental procedure

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

σ� All of the above

σ� Vascularized interposition connective graft

σ� Connective tissue onlay graft

σ� Free gingival graft

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

σ� True

σ� False

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

σ� It may acts as a permanent restoration

σ� It allows the patient to evaluate esthetics

σ� It communicates the desired gingival margin to the surgeon

σ� It allows the patient to evaluate phonetics

138. Autografts refer to ?

σ� The transplantation of tissue from one individual to the same individual

σ� The transplantation of tissue from one individual to a different individual

σ� The transplantation of tissue from an animal to an individual

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

σ� Humans

σ� Cows

σ� Pigs

σ� Horses

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

σ� All of the Above

σ� Citric Acid

σ� EDTA

σ� Tetracycline

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

σ� The height of the interproximal bone

σ� The amount of gingival recession

σ� The tooth morphology

σ� 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?

σ� 12 weeks

σ� 4 weeks

σ� 1 week

σ� 3 days

143. Which statement are true?

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

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

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

σ� Supragingival plaque consists mostly of anaerobes and facultative

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

σ� NSAIDs block the cyclooxygenase metabolism of arachidonic acids.

σ� NSAIDs block the anaerobic bacteria

σ� NSAIDs block the both cyclooxygenase and anaerobic bacteria

σ� 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 ?

σ� 3mm

σ� 4mm

σ� 5mm

σ� 2mm

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

σ� Pressure with a moistened gauze

σ� Vasoconstriction (epinephrine in the local anesthetic)

σ� Pressure with a tea bag

σ� Collagen with or without stent

σ� Suturing (tie off the bleeders)

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

σ� Infection

σ� Disruption of the vascular supply before engraftment.

σ� Thickness of free gingival graft is too thick

σ� Suturing techniques

148. What medications may affect salivary flow?

σ� Antihypertension drugs

σ� Tricyclic antidepressants

σ� Antibiotics

σ� Tricyclic antidepressants and Antihypertension drugs

σ� all above

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

σ� all of the above

σ� Root sensitivity, root caries

σ� Abnormal frenum attachment

σ� Probing extents beyond the mucogingival junction

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

Periodontology/Assi.Prof.Sok Chea 101-150

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