226 Dental At 12 year age, 2nd mandibular molar will have? ACrown complete with 1/3rd root, open apexBCrown complete with 3/4th root,, open apex (Correct Answer)C3/4th crown completedDCrown complete with 1/4th root, open apex
227 Dental Oο¬ce personnel who are at higher risk of NO toxicity, to prevent this, the most sensitive test for nitrous oxide detection is ALaminar ο¬owBDosimeterCInfrared spectrophotometer (Correct Answer)DHigh suction speed
228 Dental Excessive forces of occlusion within physislogical limit will: AIncrease width of PDL (Correct Answer)BDecrease width of PDLCWidth will remain sameDTrauma from occlusion
229 Dental Surgery of the cleft lip should be carried out at: A20 -30 weeksB2 - 12 monthsC3 - 6 months (Correct Answer)D5 years
230 Dental Only tooth in which buccal surface is made of 2 lobes AUpper 1st molar (Correct Answer)BLower 1st molarCUpper 2nd molarDLower 2nd molar
231 Dental The setting time of zinc phosphate may be retarded by? AIncrease in the ratio of powder to liquidBDiluting the liquid with waterCIncrease the addition of powder to liquidDDecrease the addition of powder to liquid (Correct Answer)
232 Dental A material turns to liquid on applying critical shear stress. This type of flow is called as? ANewtonian bodyBBingham body (Correct Answer)CDilatantDPseudoplastic
233 Dental Although standarize technique is simple and rapid but not used frequently because: AInaccurate technique.BRelies on inherent shape of file to give shape of canal. (Correct Answer)CAccessory canals are not removed efficiently.DAll of the above.
234 Dental Growth of the maxilla in the vertical direction is due to: AGrowth of the alveolus (Correct Answer)BGrowth at suturesCGrowth of the cranial baseDGrowth of the synchondrosis