Quiz 1 - Basic Terms and #30 Prep Flashcards

1
Q

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

A

CVC (complete veneer crown)

MCC (metal ceramic crowns)

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2
Q

What are the dates for the practicals and exam

A

Feb 4
Mar 6
April 15
Exam; April 25

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3
Q

True or False

The textbooks are “Contemporary Fixed Prosthodontics” and “Dental Materials and Their Selection”

A

True

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4
Q

Daily lab grades constitute ____% of the final grade

A

15

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5
Q

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

A

20

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6
Q

The final practical constitutes ____% of the final grade

A

25

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7
Q

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

A

2.0 (65%)

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8
Q

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

A

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

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9
Q

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

A

Preparation

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10
Q

Extracoronal preparation involving the entire clinical crown

A

CVC preparation

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11
Q

A cast-gold extracoronal restoration which covers the clinical crown

A

CVC

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12
Q

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

A

Path of Withdrawn (POW)

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13
Q

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

A

long axis

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14
Q

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

A

axial wall

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15
Q

The angle or taper formed by diametrically opposed axial walls

A

convergence angle

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16
Q

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

A

chamfer

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17
Q

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

A

line angle

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18
Q

The junction between any two axial walls

A

axial wall line angle

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19
Q

the junction between the occlusal surface and an axial wall

A

occlusoaxial line angle

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20
Q

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

A

cavo-surface line angle

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21
Q

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

A

depth orientation grooves

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22
Q

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)

A

functional cusp bevel

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23
Q

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

A

undercut

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24
Q

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

A

occlusal clearance

25
Q

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

A

retention form

26
Q

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

A

resistance form

27
Q

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

A

high
longevity
high resistance
axial contours and occlusion

28
Q

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

A
metal
removal
vitality
margin
gingiva
29
Q

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

A

True

30
Q

Contraindication fo CVC

A

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

31
Q

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

A

conservation
marginal integrity
retention and resistance
structural

32
Q

Ideal width of the margin

A

0.5mm

33
Q

recommended range of convergence angle

A

2-10 degrees

34
Q

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

A

gingival margin

35
Q

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

A

displacement

36
Q

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

A

resist distortion

37
Q

functional cusp dimension

A

1.5mm (1.3mm-1.7mm)

38
Q

central groove dimension

A

1mm (0.8mm-1.2mm)

39
Q

non-functional cusp dimension

A

1mm (0.8mm-1.2mm)

40
Q

chamfer width dimension

A

0.5mm (0.4mm-0.7mm)

41
Q

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

A

3-4

242.6M

42
Q

The steps for tooth reduction (5)

A
  1. occlusal grooves
  2. occlusal reduction
  3. axial grooves
  4. axial reduction
  5. finishing and evaluation
43
Q

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

A

silicone reduction guide

44
Q

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

A

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

45
Q

Place all grooves at _____ depth shallower than the intended depth

A

0.2mm

46
Q

Make all grooves and reductions with a _____ bur

A

242.6M

47
Q

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

A

height

grooves

48
Q

True or False

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

A

True

49
Q

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

A

45

50
Q

You will place _____ axial wall grooves

A

3

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

51
Q

The axial wall grooves determine the eventual _____ _____ ____

A

POW

52
Q

Mandibular molars generally have a _____ inclination

A

lingual

53
Q

True or False

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

A

False; always mark 0.5mm above gingiva

54
Q

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

A

0.5mm

sub-gingival

55
Q

True or False

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

A

False; straight occlusal, tooth contour the axial

56
Q

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

A

both

747.6M

57
Q

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

A

obtuse (slightly greater than 90 degrees)

58
Q

It is important to ______ the sharp internal line angles

A

round

59
Q

lingo-osslucal line angle reduction

A

0.8mm