ADEX OSCE| 136 questions| answers 100% correct

thickness of minor RPD connectors Correct Answer: 1.5 mm Minimum space between vertical components of RPD Correct Answer: 5 mm Kennedy Class I Correct Answer: bilateral distal extension Kennedy Class II Correct Answer: unilateral distal extension Kennedy Class III Correct Answer: entirely tooth born with teeth anterior and posterior Kennedy Class IV Correct Answer: edentulous area anterior to remaining teeth Lingual bar distance from gingival margin Correct Answer: 3 mm Lingual bar width (minimum) Correct Answer: 4 mm Maxillary major connectors, how far from gingival margin Correct Answer: 6 mm Max RPD bead line width and depth Correct Answer: .75-1 mm Anterior-posterior palatal strap, minimum distance between straps and minimum width for each strap Correct Answer: 15 mm between, 6 mm anterior and 8 mm posterior Palatal plate advised when? Correct Answer: The last abutment on either side is a canine or premolar Main function of indirect retainers Correct Answer: prevents vertical dislodgement of the distal extension base away from tissues (sticky food) Minimum number of rests for RPD Correct Answer: 3 For a distal extension where is the rest on the most posterior tooth Correct Answer: mesial rest seat depth Correct Answer: 1.5 mm at marginal ridge and 2 mm in center, at least 2.5 mm wide what is prepared first? Guide planes or seats Correct Answer: guide planes extended occlusal rests used when? Correct Answer: used when most posterior molar abutment is mesially tipped in class II (mod I) and class III Cingulum rest depths Correct Answer: 2 mm wide (F-L), 2.5-3 mm (M-D), 1.5 mm deep Guide plane position relative to height of contour for classes of RPD Correct Answer: Class III and IV can end above the height of contour because there is no functional movement. Class I and II must be below the height of contour (to prevent torquing). With I-bars and mesial rests on premolars, must end exactly at the height of contour. how to determine number of clasps Correct Answer: kennedy classification + 1 (except for class IV) Undercut of 0.01 Correct Answer: cast clasp Undercut of 0.02 Correct Answer: wrought wire (0.5 mm and must be at least 8 mm long, 18 gauge) chromium provides what Correct Answer: corrosion resistance cobalt provides what Correct Answer: rigidity Nickel provides what Correct Answer: ductility What muscle dictates the DB of the mand flange of a denture Correct Answer: masseter What muscle dictates the DL of the mand flange of a denture Correct Answer: superior constrictor muscle how far to trim back the custom tray from the mucosal reflection Correct Answer: 2 mm occlusion rim heights Correct Answer: maxillary 22 mm, mandibular 18 mm The inferior surface of the maxillary occlusal rim should be parallel to... Correct Answer: Camper's Line (Ala-tragus Line) and inter-pupillary line primary and secondary support for mand denture Correct Answer: primary - buccal shelf, secondary - alveolar ridge Posterior palatal seal Correct Answer: extends through the hamular notches, 2 mm in front of fovea palatinae, carried 5 mm anterior to the vibrating line if denture falls down when smiling Correct Answer: buccal notch and buccal flange are excessively thick Golden Proportion Ratio Correct Answer: 1.6:1:0.6 (central:lateral:canine) S sounds like "th" Correct Answer: either max anteriors are too far palatal or palate is too thick. S sounds bring the max and mand closest together (than other sounds) Occlusal clearance gold Correct Answer: 1.5 mm functional, 1 mm non-functional Occlusal clearance PFM Correct Answer: 1.5-2 mm functional, 1-1.5 non-functional all ceramic clearance Correct Answer: 2 mm Percentages for PFM copings Correct Answer: high noble (98% gold, platinum and palladium - these metals do not oxidize on casting), Noble (50-60% palladium, 30-40% silver - silver will oxidize), Base (70-80% nickle, 15% chromium - these both oxidize on casting)