RPD midterm 22

Question 1

1. What to use for a mandibular lingual tori

Answer 1

b. Lingual plate

Question 2

2. Picture: #20 & #29 something about definite distal dislodgement

Answer 2

a. True ??

Question 3

3. What is the external finish line?

Answer 3

a. External junction of the framework to plastic denture base

Question 4

4. When biting down the I bar moves in what direction?

Answer 4

a. Mesial and down

Question 5

5. Tissue undercut can prevent selection of (supra, infra, minor connector)

Answer 5

a. Infrabulge

Question 6

6. What is the most commonly used major connector for class III RPDs?

Answer 6

a. Palatal strap

Question 7

7. Undercut for a cast chromium clasp?

Answer 7

a. 0.01 inches

Question 8

8. Proximal plate adjusted before rest seat. S curved survey line for retentive not reciprocal.

Answer 8

a. True, true

Question 9

9. Fabrication of RPD framework is done on what?

Answer 9

a. Master cast

Question 10

10. Which function of major connectors disperses lateral forces?

Answer 10

a. Cross arch stabilization

Question 11

11. Order of tooth modifications

Answer 11

a. Guide planes, survey line adjustment, rest seat

Question 12

12. Kennedy classification with no modifications

Answer 12

a. Class IV

Question 13

13. What does NOT apply to guiding planes?

Answer 13

a. NEVER use an occlusal rest on a mesially tilted mandibular molars for rest seats

Question 14

14. What is the pod?

Answer 14

a. Part of the I bar in that contacts the 0.01” undercut

Question 15

15. What do you remove on an alternative/altered cast?

Answer 15

a. Distal extensions

Question 16

16. What is drawn in red on a cast?

Answer 16

a. Undercuts

Question 17

17. Where can you not put an I bar clasp?

Answer 17

a. DF undercut

Question 18

18. As the length of the guiding plane increases, frictional retention is increased. When length is increased, resistance to rotation is increased.

Answer 18

a. True, true

Question 19

19. What classification is a bilateral distal extension?

Answer 19

a. Class I

Question 20

20. You have #19,22,23,24,25 missing. What classification is it?

Answer 20

a. Kennedy class III mod 1

Question 21

21. Super borders for lingual bar 6mm from the free gingival margin. This distance best measured on cast.

Answer 21

a. False, false (distance should be measured in the mouth)

Question 22

22. Axis of rotations determined from?

Answer 22

a. Position of the primary rests

Question 23

23. “short” guiding planes length (tooth-tissue supported RPD)

Answer 23

a. 1.5 mm

Question 24

24. length class III (tooth-supported RPD)

Answer 24

a. 3-4 mm

Question 25

25. Best clasp choice for stress relief in tooth-tissue supported RPDs

Answer 25

a. RPI

Question 26

26. Proximal 2/3 of reciprocal clasp in ______, terminal 1/3 of retentive clasp in ______

Answer 26

a. Middle, gingival

Question 27

27. A patient presents with all maxillary teeth. Which does not contribute to Kennedy classification? a. Path of insertion b. Possible extraction in anterior teeth c. Possible extraction in posterior teeth d. Tooth for RPD

Answer 27

a. Path of insertion

Question 28

28. When is lingual plate major connector NOT indicated?

Answer 28

a. Anterior crowding

Question 29

29. What connects major connector to other pieces of the framework?

Answer 29

a. Minor connector

Question 30

30. What component of the framework is rigid and lies above the survey line?

Answer 30

a. Reciprocal clasp

Question 31

31. T/F: concerning guiding planes: As wide as ½ the distance between cusp tips 1/3 the bucco-lingual width of the tooth

Answer 31

a. True

Question 32

32. T/F Vertical arm must be locked in place

Answer 32

a. False

Question 33

33. Picture: tooth used for ring clasp a. #18 ??? b. 21 c. 28

Answer 33

d. None of these used for ring clasp - i chose this answer

Question 34

34. Picture: what is wrong with this picture (mandibular canine) a. Needs a proper rest seat b. Mesiodistal width c. Buccolingual width d. Incisal width

Answer 34

c. Buccolingual width

Question 35

35. Best used clasp for this picture a. Distal rest i. Maybe WW (wrought wire) circumferential ii. Maybe I-bar iii. 1/2 Tbar iv. Def not mesial seat

Answer 35

ii. Maybe I-bar

Question 36

36. What is contraindicated for a tissue undercut a. Idk the answer b. Circumferential c. ½ T clasp - because it’s an infrabulge clasp

Answer 36

c. ½ T clasp - because it’s an infrabulge clasp

Question 37

37. Not used in stress situations a. Embrasure b. RPI c. Combined circumferential

Answer 37

a. Embrasure - answer

Question 38

38. Not requirement of clasp assembly a. Support b. Retention c. Principle of encirclemenet d. Reciprocation

Answer 38

a. Support

Question 39

39. Bilateral distal extension

Answer 39

a. Kennedy class 1 mod 2