Biomaterial Dr Yin Sotheun part 3

108. The impression material which is routinely used in auto mixing devicee system is :?

109. Which of the following elastomers is suited for multiple cast pouring :?

110. One of the following statements which one is incorrect regarding addition silicones :?

111. Sulfur contamination from natural latex gloves inhibits the setting of :?

112. When a mechanical device is used for mixing addition silicones :?

113. Distortion on removal from undercuts in addition silicones is very less due to :?

114. Polyether is different from other elastomers in the following aspects :?

115. Stiffness of the material with passage of time is maximum in :?

116. Hypersensitivity reactions like contact dermatitis is caused by :?

117. The main ingredient of casting waxes is :?

118. All are properties of waxes except :?

119. The function of gum dammar in inlay wax is :?

120. Carnauba wax is preferred to candelilla wax as :?

121. Which of the following waxes used to align of castings before soldering ?

122. Which of the following is called periphery wax ?

123. Which of the following is used to alter contour of impression trays ?

124. Which of the following waxes is obtained from distillation of petroleum ?

125. Montan waxes have the following properties except :?

126. The appropriate proportion of polymer to monomer component of dental resin by volume is generally :?

127. Working time of denture resin should be at least :?

128. Porosity in denture base resins can be due to :?

129. Main disadvantage of denture base soft reliner is :?

130. The maximum warpage of acrylic denture occurs during :?

131. Color stability of cold-cured resins is inferior to that of heat cured resins due to :?

132. Property which distinguishes composites from filled acrylic resins :?

133. Bis-GMA is a reaction product of :?

134. Commonly used filler in composite is :?

135. Inorganic phase in a composite matrix :?

136. Commonly used viscosity controller in composites is :?

137. Which of the following composites give rough surfaced finish ?

138. The main advantage of composites compared to silicates cement is :?

139. In visible light-cured composites photo initiator molecule is :?

140. Minimum light exposure time for composite resins should be :?

141. Which of the following composite is recommended for non stress bearing anterior restoration ?

142. The light-cured restorative resins have advantages over chemically activated restorative resins as :?

143. One of the disadvantages of using quartz as filler in restorative resin is :?

144. The main resin constituent of polishable composite resin is :?

145. In UV curing system the activator employed is :?

146. Light source in the curing unit is usually :?

147. Most commonly used pit and fissure sealant is :?

148. Adhesion in composites is due to :?

149. Dispensing composite resins using a syringe is advantageous because it :?

150. The light from the visible light curing unit can cause :?

151. In deep caities, the resin which remains unpolymerized can cause :?

152. In the cavities which are more than 2mm deep a light-cured restoration is :?

153. If the light cure resin is curd in increments, it helps in :?

154. Chemically cured resin shrinks:?

155. A glaze is placed over the finished composite restoration to :?

156. Excess composite from the labial surfaces can be removed by using :?

157. Hand instruments for composites are made of :?

158. Which of the following base is contraindicated for composites ?

159. Which of the following statements is true regarding zinc phosphate cement ?

160. Glass ionomer cenment is not recommended for :?

161. The cavity for a GIC restoration is preconditioned with :?

162. The fluoride release from glass ionomer cement is :?