Crowns And Other Extra Coronal Restorations Aesthetic Control Flashcards

1
Q

What are the steps of aesthetic control

A

Identification and definition if the pts aesthetic problem
Consideration of the balance between aesthetics and tooth destruction for conventional and adhesive Restorations
An awareness of the aesthetic limitations of Restorations and an attempt to ensure that the pts expectations are realistic
Incorporation of procedures leading to better aesthetics at each clinical stage
Confidence in determining shade and communicating effectively with the lab

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What are the different types of lab made aesthetic Restorations

A
All porcelain
All composite
Ceramo metal crown
Composite bonded to metal crown
Partial coverage metal crown
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What are the different types of all porcelain lab made aesthetic Restorations

A
Conventional porcelain jacket crown
High strength porcelain jacket crown
Full coverage porcelain veneer dentine bonded crown
Porcelain labial veneer
Porcelain onlay
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Lab cam use composite to make what Restorations

A

All composite crown
Veneer
Onlay

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What factors contribute to dental aesthetics

A

Dental
Mucogingival
Facial
General

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What are the dental aspects of aesthetics compared to Mucogingival

A

Dental: shade contour texture shape position arrangement interproximal contacts incisal embrasures gingival embrasures incisal level posterior occlusal level

Mucogingival: margin level margin pattern shape of papilla colour thickness

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What are the facial aspects of aesthetics

A

Lip levels are rest
Lip levels in function
Centre line

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What are the general factors contributing to facia aesthetics

A

Age
Occupation
Gender
Personality

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What is the scheme for shade determination

A

Determine shade at the start of the appointment before the risk of eye fatigue and tooth dehydration with resultant shade change especially after use of rubber dam

Use either natural light or colour corrected artificial light soyrce

Drape the pt with a neutral coloured cover if clothing is bright and have the pt remove brightly coloured makeup

Assess value by squinting the reduced amount of light entering the eye may allow the retinal rods to better distinguish degrees of lightness and darkness

Make rapid comparisons with sgadr tabs no more than 5 seconds each viewing gazing at a soft blue colour between attempts is said to reduce blue fatigue which can result in accentuatuon of yellow orange sensitivity

The canines have high chroma and may be a useful guide to assessing hue

Compare the dominant hue and chrome within the value range chosen
Compare selected tabs under different conditions Eg wet vs dry different lip positions artificial and natural light from different angles

Select a shade which is higher in value lighter if in doubt surface stains can reduce these dimensions but not easily increase them

Look carefully for colour characterisation such as stained imbrication lines white spots neck colouration incisal edge translucency and halo effect (a thin opaque line sometimes seen within a translucent incisal). Shade tabs exactly representing the pure porcelains and stains available can be useful for this task. Simple diagrams are invaluable

Determine surface lustre

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What are the benefits and drawbacks of porcelain as a material

A

High cost
Removal of tooth tissue and potential for damage to the pulp and periodontium

Benefit of stunning porcelain work is easiest to achieve where a thick layer of material can be used to develop the optimum optical properties this requires more tooth tissue removal

So the choice is either

  • sacrifice aesthetics for long term health
  • take a risk with long term pulp health to maximise aesthetics
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Name some adhesive Restorations and their drawbacks

A

Porcelain laminate veneer
Dentine bonded crown

Problem of masking the colour of darkly stained teeth
Problems with temporisation
Inability to cement Restorations provisionally

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What is the advantage of a Conservative approach?

A

Less pulp mobility/risk of pulp damage

More tooth remaining should the need arise to remake the restoration

How well did you know this?
1
Not at all
2
3
4
5
Perfectly