ADEX OSCE COMPREHENSIVE QUESTIONS
AND COMPLETE SOLUTIONS
◉ Minimum space between vertical components of RPD.
Answer: 5 mm
◉ Kennedy Class I.
Answer: bilateral distal extension
◉ Kennedy Class II.
Answer: unilateral distal extension
◉ Kennedy Class III.
Answer: entirely tooth born with teeth anterior and posterior
◉ Kennedy Class IV.
Answer: edentulous area anterior to remaining teeth
◉ Lingual bar distance from gingival margin.
Answer: 3 mm
,◉ Lingual bar width (minimum).
Answer: 4 mm
◉ Maxillary major connectors, how far from gingival margin.
Answer: 6 mm
◉ Max RPD bead line width and depth.
Answer: .75-1 mm
◉ Anterior-posterior palatal strap, minimum distance between
straps and minimum width for each strap.
Answer: 15 mm between, 6 mm anterior and 8 mm posterior
◉ Palatal plate advised when?.
Answer: The last abutment on either side is a canine or premolar
◉ Main function of indirect retainers.
Answer: prevents vertical dislodgement of the distal extension base
away from tissues (sticky food)
◉ Minimum number of rests for RPD.
Answer: 3
, ◉ For a distal extension where is the rest on the most posterior
tooth.
Answer: mesial
◉ rest seat depth.
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.
Answer: guide planes
◉ extended occlusal rests used when?.
Answer: used when most posterior molar abutment is mesially
tipped in class II (mod I) and class III
◉ Cingulum rest depths.
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.
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
AND COMPLETE SOLUTIONS
◉ Minimum space between vertical components of RPD.
Answer: 5 mm
◉ Kennedy Class I.
Answer: bilateral distal extension
◉ Kennedy Class II.
Answer: unilateral distal extension
◉ Kennedy Class III.
Answer: entirely tooth born with teeth anterior and posterior
◉ Kennedy Class IV.
Answer: edentulous area anterior to remaining teeth
◉ Lingual bar distance from gingival margin.
Answer: 3 mm
,◉ Lingual bar width (minimum).
Answer: 4 mm
◉ Maxillary major connectors, how far from gingival margin.
Answer: 6 mm
◉ Max RPD bead line width and depth.
Answer: .75-1 mm
◉ Anterior-posterior palatal strap, minimum distance between
straps and minimum width for each strap.
Answer: 15 mm between, 6 mm anterior and 8 mm posterior
◉ Palatal plate advised when?.
Answer: The last abutment on either side is a canine or premolar
◉ Main function of indirect retainers.
Answer: prevents vertical dislodgement of the distal extension base
away from tissues (sticky food)
◉ Minimum number of rests for RPD.
Answer: 3
, ◉ For a distal extension where is the rest on the most posterior
tooth.
Answer: mesial
◉ rest seat depth.
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.
Answer: guide planes
◉ extended occlusal rests used when?.
Answer: used when most posterior molar abutment is mesially
tipped in class II (mod I) and class III
◉ Cingulum rest depths.
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.
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
