Quiz 1 - Basic Terms and #30 Prep Flashcards Preview

SP14 Fixed Restorative > Quiz 1 - Basic Terms and #30 Prep > Flashcards

Flashcards in Quiz 1 - Basic Terms and #30 Prep Deck (59):
1

At the end of the course, you should be able to prepare ______ and ______ for both molars and bicuspids

CVC (complete veneer crown)
MCC (metal ceramic crowns)

2

What are the dates for the practicals and exam

Feb 4
Mar 6
April 15
Exam; April 25

3

True or False
The textbooks are "Contemporary Fixed Prosthodontics" and "Dental Materials and Their Selection"

True

4

Daily lab grades constitute ____% of the final grade

15

5

The written final+quiz, and both the midterm practicals compose ____% of the final grade respectively

20

6

The final practical constitutes ____% of the final grade

25

7

You need at least an average of ___ to pass the course on both the didactic and laboratory portion

2.0 (65%)

8

The grades are based on an OSU or OSI scale; which means

Oustanding (Excellent)
Satisfactory
Unsastifactory (in need of improvement)

9

The final shape (form of the tooth, produced by instrumentation) to receive a restoration

Preparation

10

Extracoronal preparation involving the entire clinical crown

CVC preparation

11

A cast-gold extracoronal restoration which covers the clinical crown

CVC

12

The imaginary line along which a casting is moved when it is separated from its prepared tooth

Path of Withdrawn (POW)

13

For single crowns the POW should be nearly coincident with the _____ _____ of the tooth

long axis

14

Part of the crown preparation prepared in the long axis of the tooth - can be designated as buccal, lingual, medial or distal

axial wall

15

The angle or taper formed by diametrically opposed axial walls

convergence angle

16

The cervical junction of the prepared axial wall and the unprepared portion of the tooth structure; it extends around the most cervical portion of the tooth preparation

chamfer

17

The lines formed by the junction of any two tooth surfaces; should be rounded in complete crown preparation

line angle

18

The junction between any two axial walls

axial wall line angle

19

the junction between the occlusal surface and an axial wall

occlusoaxial line angle

20

the junction of prepared (cut) to unprepared (uncut) tooth structure

cavo-surface line angle

21

grooves placed on the surface of the tooth to provide a reference to determine when sufficient tooth structure has been reduced

depth orientation grooves

22

a wide bevel placed on the functional cusps (the buccal inclines of the mandibular buccal cusps and the lingual inclines of the maxillary lingual cusps)

functional cusp bevel

23

a crown preparation is ________ if a wax pattern cannot be withdrawn from its die with distortion; can be caused by depression via carious lesion, diametrically opposed axial walls that do not converge occlusally caused by improper angulation of the cutting instrument

undercut

24

The distance between the occlusal surface of the prepared toot and the occlusal surface of the opposing tooth; clearance must be evaluated during excursive jaw movements, as well as in intercuspal position

occlusal clearance

25

the characteristics of the tooth preparation which tends to resist the removal of the restoration along its POW

retention form

26

the characteristics of a tooth preparation which tends to prevent dislodgment of a seated restoration by forces directed in an apical or oblique direction; prevents dislodgment of the restoration by occlusal forces

resistance form

27

Advantages of CVC; _____ strength, ________, _____ _____ to displacement, ability to modify _____ ____ and _______

high
longevity
high resistance
axial contours and occlusion

28

Disadvantages of CVC; display of ______, ______ of tooth substance, ______ testing, ______ close to _____ tissue

metal
removal
vitality
margin
gingiva

29

True or False
The following are indicative for a CVC; extensive destruction by caries or trauma, endodontically treated teeth, large existing restorations, maximum retention needed, recontouring of axial surfaces, correction of malinclination, correction of occlusal discrepancies, and to provide contours suitable for a removable partial denture

True

30

Contraindication fo CVC

wherever a tooth can be adequately restored with a more conservative restoration

31

Principles of tooth preparation; _______ of tooth structure, _______ _______ of the restoration, _______ and ________, _______ durability

conservation
marginal integrity
retention and resistance
structural

32

Ideal width of the margin

0.5mm

33

recommended range of convergence angle

2-10 degrees

34

The tooth-restoration interface at the _____ _____ is a potential site of failure due to cement dissolution or roughness

gingival margin

35

Inadequate retention and resistance form may lead to _______ of the restoration during function; can be caused by excessive convergence angle, inadequate height, insufficient surface area

displacement

36

the restoration must have sufficient bulk to ____ ____ and allow for west during service, however and unnecessarily thick casting is indicative of excessing tooth preparation

resist distortion

37

functional cusp dimension

1.5mm (1.3mm-1.7mm)

38

central groove dimension

1mm (0.8mm-1.2mm)

39

non-functional cusp dimension

1mm (0.8mm-1.2mm)

40

chamfer width dimension

0.5mm (0.4mm-0.7mm)

41

the tapered bur converges approximately _______ degrees from the cervical towards the occlusal; it includes the _____ bur

3-4
242.6M

42

The steps for tooth reduction (5)

1. occlusal grooves
2. occlusal reduction
3. axial grooves
4. axial reduction
5. finishing and evaluation

43

It is important to make a new _____ _____ _____ for each tooth and prep you are making

silicone reduction guide

44

True or False
When making a silicone reduction guide it is important to cut on either the distal or medial side of the buccal groove

False; it should be cut down the middle of the groove

45

Place all grooves at _____ depth shallower than the intended depth

0.2mm

46

Make all grooves and reductions with a _____ bur

242.6M

47

Place depth grooves at the ______ of each triangular ridge and in the _____

height
grooves

48

True or False
Remove tooth structure in-between the grooves first, as in remove the islands of tooth

True

49

The functional cusp bevel needs to be at ____ degrees to the long axis

45

50

You will place _____ axial wall grooves

3
one in the center, and one at each medial and distal line angle

51

The axial wall grooves determine the eventual _____ _____ ____

POW

52

Mandibular molars generally have a _____ inclination

lingual

53

True or False
It is not important to mark the tooth with a pencil line indicating the height of the chamfer border

False; always mark 0.5mm above gingiva

54

It is important to have _____ mm of clearance inter-proximately; going _____-gingival may be necessary

0.5mm
sub-gingival

55

True or False
Use straight lines when coin the axial wall reduction and follow tooth contour during occlusal reduction

False; straight occlusal, tooth contour the axial

56

Attack the inter-proximal region from ____ side(s) of the tooth leading a narrow island which is removed with a _____ bur

both
747.6M

57

The cavourface angle should be ______; no sharp lip on enamel

obtuse (slightly greater than 90 degrees)

58

It is important to ______ the sharp internal line angles

round

59

lingo-osslucal line angle reduction

0.8mm