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Operative II > Inlay, Onlay, and Veneers > Flashcards

Inlay, Onlay, and Veneers Flashcards

1
Q

____ restorations:
• Restoration is fabricated outside of the mouth
• Dental impression is taken of the prepared tooth, then
sent to lab or milled in-office
• Includes inlays and onlays, crowns, bridges, and
veneers

A

Indirect restorations

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2
Q

When margin exceeds 2/3 of the distance between central groove and cusp tip, what do you do?

A

MUST CAP WEAK CUSPS

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3
Q

When margins end ½ distance between central groove and cusp tip what do you do?

A

CONSIDER CAPPING WEAK CUSPS

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4
Q

• indirect restoration that is placed within the cusp tips of a
tooth
• offers no protection of the cusp from occlusal forces

A

INLAY

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5
Q

____ are used for:
•Teeth with minimal caries and strong buccal and lingual cusps
•Acceptable (normal) occlusion

A

Inlays

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6
Q

• indirect restoration that covers one or more cusps, extending through and
beyond the cusp tip to the facial/lingual and proximal slopes of the covered
cusps
• incorporates the principles and advantages of both intracoronal and
extracoronal indirect restorations
• occlusion in all functional positions is supported by restorative material
rather than tooth structure

A

ONLAY

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7
Q

EMax Crowns are used for Indirect Restorations and is made of what?

A

Lithium Discilicate

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8
Q

The following are indications for ______:

•Large carious lesions or existing defective
restorations
•Cracked Teeth
•Endodontically treated teeth
• Must have sufficient tooth structure to retain the onlay
and allow for removal of undercuts
• When enough facial and lingual surfaces are relatively intact; otherwise do a crown

A

Onlays

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9
Q

when 1/2 way between central groove and cusp tip - consider ____ ___ ____

A

onlaying the cusp

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10
Q

2/3 way between central groove and cusp tip - SHOULD ____ __ ___

A

should onlay the cusp

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11
Q

the following are (advantages or disadvantages) of Indirect Restor.

•Strength of materials •Conservation tooth structure •Better control of restoration’s contours

A

advantages

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12
Q

Do you bevel a Gold Inlay?

A

YES YOU DO

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13
Q

With _____ Inlay, the following are true:
• Short walls should have a 2° divergence
• Long walls can have a 5-7° divergence

A

Gold

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14
Q

How deep must the pulpal floor be in a Gold Inlay?

A

2mm deep

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15
Q

T/F: There is no reverse S in Inlay preps.

A

true

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16
Q 
t/f: 
Bevels for Gold Inlay Prep 
• 1.0mm at occlusal
• 1.0mm at gingival
• Axiopulpal line angles
A

True!

Bevels
• 1.0mm at occlusal
• 1.0mm at gingival
• Axiopulpal line angles

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17
Q

____– protects enamel from fracturing

A

Bevel

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18
Q

t/f: there is no gingival bevel on the ceramic Inlay.

A

true

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19
Q

Does an onlay or inlay have more internal stress?

A

inlay

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20
Q

T/F: With Gold Onlays, the following is true:

Minimum of 1.5 mm of gold to cover cusps supporting occlusion;

1.0 mm for cusps not supporting occlusion

A

true

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21
Q

The following is an exception for cuspal coverage of _____ tooth:

Do not cover the facial cusp of maxillary molar or premolar if supported
by strong tooth structure, and in smile line

• Modified “esthetic” coverage of facial cusp if weak

A

maxillary tooth

22
Q

the following are indications for _____ Onlays

•Esthetics - areas of esthetic importance for the patient

•Large defects or previous restorations
–Wide labiolingual missing tooth structure
–Teeth that require cuspal coverage
–Contours of large restorations are more easily developed in the
lab
–Indirect materials are more durable than direct for replacing
occlusion and contacts

A

Porcelain

23
Q

The following are ______ for Porcelain Onlays:

• Ceramics can fracture if they don’t have sufficient bulk or are under excessive stress
e.g. - in bruxers and clenchers

  • Inability to maintain a dry field
  • Deep subgingival preparations - difficult to get an impression, difficult to finish, difficult to get good bonding
A

Contraindication

24
Q

T/F: the following are advantages of Porcelain Onlays

•Improved physical properties •Wear resistance
• porcelain wears opposing teeth the most and has the most resistance to wear
• porcelain> lab processed composite > direct resin composites in order of
causes most wear and wears the least to causes least wear and wears the
most
•Reduced polymerization shrinkage
• all shrinkage occurs in the laboratory, the only material that can shrink is the resin
composite cement which is used during cementation

A

true

25
Q

t/f: during the onlay procedure, it is important that undercuts are blocked out with a glass ionomer liner /base or resin composite.

A

true

26
Q

For Porcelain Onlays it requires

____ mm reduction over functional cusps

____ mm reduction over non functional cusps

A
  1. 0mm reduction over functional cusps

1. 5 mm reduction over non functional cusps

27
Q

t/f: you do not bevel Porcelain onlay preps

A

true

28
Q

t/f: With Porcelain Onlays:

•Use eugenol-free cement
• Eugenol interferes with bonding •Or, if you must use cement containing eugenol,
important to pumice tooth well to remove eugenol

A

True

29
Q

A?

A

Gingival wall

30
Q

B?

A

Axial Wall

31
Q

C?

A

Pulpal Wall

32
Q

D?

A

Dovetail

33
Q

E?

A

Occlusal Bevel

34
Q

F?

A

Proximal Walls

NO BEVELS

35
Q

G?

A

Gingival Bevel

36
Q

t/f: Lithium Discilicate and Zirconia are both user friendly and Strong types of Permanent restorative materials.

A

true

37
Q

What are the two methods of making veneers?

A

• Indirect
Most commonly Feldspathic Porcelain or Lithium Disilicate

• Direct
Composite

38
Q 
The following are \_\_\_\_\_\_ for veneers
•Severely Malpositioned teeth
• Ortho may be indicated 
•Denuded Dentin 
•Unavailable Enamel 
•Poor Oral Hygiene 
•Beware of highly fluoridated teeth- Issues with bonding
• No primary teeth! 
• Adolescents 
• Pregnancy 
•Oral Habits- Bruxism
A

contraindications

39
Q

The Following are ____ for veneers

• Intrinsic Discoloration
• Tetracycline staining
• Fluorosis 
• Extrinsic Staining
     Coffee
     Smoking
     Wine 
• Wear Patterns 
• Poor Restorations 
• Diastema Closure 
• Rotated and Misaligned Teeth
A

indications

40
Q

t/f: porcelain is best tooth substitute great for veneers

A

true

41
Q

The Following Describes the _____ prep for composite Veneers

  • Most often recommended
  • Remove only enough tooth structure to achieve optimal contours with final restoration
  • Incisal edge remains intact
  • Intra-enamel preparation
A

Window

42
Q

The Following Describes the _____ _______ prep for composite Veneers

• Preparation includes incisal edge
• Indicated when tooth needs to be lengthened or an incisal defect
is present and needs to be corrected

A

Incisal Lapping Prep

43
Q

______ - • Involves use of acidic and abrasive agents applied to enamel surface • 37% phosphoric acid and pumice or 6% hydrochloric acid and silica

A

Microabrasion

44
Q

______ - • Removal of enamel defect with bur • 12 fluted carbide or diamond finishing bur, followed by 30 fluted carbide finishing bur • Polished with rubber point

A

Macroabrasion

45
Q

t/f:
Porcelain Veneer Procedure
DIAGNOSTIC WAX UP !!!!
Very important to see what can be done for both you and the patient

A

true

46
Q

With Veneers there is a __ - __ mm minimum reduction for material bulk. Only if not lengthening the incisal edge.

A

1-2 mm

47
Q

Why is it important to use light cured composite cement when placing veneer on tooth?

A

dual cure is not color stable

48
Q

T/F: Tack cure in order to clean cemement from margin, before it becomes completely set.

A

true

49
Q

T/f: DO NOT OVERHEAT veneers when polishing. Excess heat may cause degradation of cement bond

A

true

50
Q

Adjust occlusion ____ (before or after) veneers have been
bonded
• fracture more likely otherwise • use diamond bur and water spray

A

after

51
Q

t/f: the following are common mistakes with veneers:

  • Failure to address gingival asymmetry
  • Failure to do a wax up for the case
  • Failure to work with an experienced esthetic ceramist
  • Using Ferric Sulfate (Astringedent®) hemostatic agent to stop bleeding around gingiva It will stain margins
  • –>Use Aluminum Chloride (Hemodent®) instead
  • Improper bonding technique- May lead to black staining
  • Failure to communicate effectively with patient
  • Starting a case that should have NEVER been started in the first place.
A

true

Operative II (11 decks)

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