NDEB Exam Questions and Answers

he placement of a retentive pin in the proximal regions of posterior teeth would most likely result in periodontal ligament perforation in the -ANSWERS- mesial of a mandibular first molar Air water spray used as a coolant in high speed -ANSWERS- 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 -ANSWERS- 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 -ANSWERS- place an amalgam retrofill For composite resin preparations cavosurface enamel margins are bevelled because - ANSWERS- 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 -ANSWERS- 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 -ANSWERS- external root resorption fractured incisal angles in the permanent teeth of adolescent patients are best restored using -ANSWERS- acid etch composite resin techniques What are the purposes of using occlusal splints -ANSWERS- to change the pattern and degree of tactile afferent neural impulses, to immobilize teeth and to prevent teeth from disturbing occlusal sensory input histologically a pulp polyp consists of -ANSWERS- a mass of collagenous fibres, proliferating capillaries, fibroblasts Treatment of primary herpetic gingivostomatitis should include -ANSWERS- palliative treatment and control of secondary infection Teeth mobility may be due to -ANSWERS- excessive occlusal force, decreases osseous support and periodontal abscess lichen planus occurs most frequently on the -ANSWERS- buccal mucos