NDEB boards questions and correct answers

The placement of a retentive pin in the proximal regions of posterior teeth would most likely result in periodontal ligament perforation in the - correct answer mesial of a mandibular first molar Air water spray used as a coolant in high speed - correct answer will reduce clogging of cutting instruments The proposed mechanism by which a calcium hydroxide preparation initiates secondary dentin formation in direct pulp cappings is by - correct answer stimulating undifferentiated cells of the tissue to differentiate into odontoblasts when resecting the apical aspect of a tooth during endodontic apical surgery it is appropriate to - correct answer place an amalgam retrofill For composite resin preparations cavosurface enamel margins are bevelled because - correct answer a bevelled margin produces a more favorable surface for etching and after etching the bonding ages reduces microleakage what instruments can be used for placing gingival bevels on cast gold inlay preparations - correct answer margin trimmers and carbide finishing burs What is the most probable postoperative complication of intracoronal bleaching for a tooth that has an inadequate internal seal - correct answer external root resorption fractured incisal angles in the permanent teeth of adolescent patients are best restored using - correct answer acid etch composite resin techniques What are the purposes of using occlusal splints - correct answer to change the pattern and degree of tactile afferent neural impulses, to immobilize teeth and to prevent teeth from disturbing occlusal sensory input