Loading on mucosa in distal extension RPD is increased when 1) Bases covering are large with excessive forces 2) Bases covering are small with excessive forces 3) Borders are overextended 4) All of the above
ProsthodonticsAnswer: 2
The invested soldered assembly is preheated primarily 1) The drive off the sulfides in the investment that would contaminate the soldered connections 2) To obtain a reducing atmosphere that allows the solder to flow more readily 3) Both the above 4) None of the above
ProsthodonticsAnswer: 1
The use of kinetic face bow is contraindicated in the edentulous patients because 1. It has to be used on the mandible ridge 2. Recording bases may be unstable on the edentulous mandible 3. Movement of the bases may lead to inaccuracy in recording hinge axis 4. All of the above
ProsthodonticsAnswer: 4
Compared to a cast circumferential clasp, a bar clasp
1. is less retentive
2. has greater tendency to collect and hold
3. in less acceptable esthetically
4. contributes more to bracing and stabilization
ProsthodonticsAnswer: 2
The secondary peripheral seal in mandibular denture is provided by 1) Buccal shelf 2) Anterior lingual border 3) Retromolar pad 4) Crest of the ridge
ProsthodonticsAnswer: 2
In a construction a fixed partial denture for a patient, the dentist will be use a hygeinic ponic. Which of the following will primarily determines the faciolingual dimension of the occlusal portion of this pontic? 1) Span of the bridge 2) Height of the bridge 3) Opposing centric stops 4) Occlusal stresses created by the patient
ProsthodonticsAnswer: 3
Custom tray is better than stock tray for impression (of crown) due to following reasons except 1) Custom tray is eary to adapt 2) Stock tray may not record full flange 3) Custom tray is cheaper 4) Stock tray can distort easily
ProsthodonticsAnswer: 3
In considering missing mandibular posterior teeth opposing the upper natural teeth, the ideal pontic 1) All porcelian 2) All acrylic only 3) Acrylic with gold covering 4) Porcelain with gold covering
