5

Question 1

RPW

Answer 1

minor connector, wrought clasp wire.

Question 2

Combo

Answer 2

Wrought retentive arm, reciprocating arm

Question 3

RPI I bar can be

Answer 3

mesial but not distal of midbuccal.

Question 4

RPW/combo undercut

Answer 4

0.02

Question 5

Metal framework stops at the base of

Answer 5

RM pad. No metal on ramp

Question 6

External finish lines should be

Answer 6

slightly acute.

Question 7

Lingual plate

Answer 7

above cingulum to HOC on bicuspid. PLate must end on a rest - depth depends on tongue. 4mm below FGM preferably

Question 8

When cutting, do

Answer 8

guide planes 1st, undercuts 2nd, occlusal rest 3rd - #8 1/2 depth of bur for occlusal rest

Question 9

Occlusal rest

Answer 9

rounded triangle outline - 1/3rd facial lingual width, 1/2 width between cusps, 1.5mm deep for metal, floor inclines apically toward tooth center. Goes up to1mm. Use number 8 bur.

Question 10

Cingulum rest

Answer 10

inverted V or U. MD width 2.5 to 3mm. Labiolingual width 2mm. Incisal apical depth 1.5mm. Loweer anteriors frequently don’t have enough enamel. Use 37 bur. Bicuspids preferred in mandible.

Question 11

Incisal rest

Answer 11

rounded notch at an incisal angle. 2.5mm wide, 1.5mm deep. Usually used as indirect retainer, less favorable mechanical leverage than cingulum rest.