Tx planning for Fixed Pros

Question 1

Components of tx plan

Answer 1

Immediate
Initial
Re-evaluation
Reconstructive
Maintenance

Question 2

Contraindications for crowns

Answer 2

• Active caries
• Lack of tooth tissue prep
• Unfavourable occlusion

Question 3

Consequences of underprepped crown

Answer 3

Poor aesthetics
Perio+ occlusal consequences

Question 4

Consequences of over prepped crown

Answer 4

Pulp + tooth strength compromised

Question 5

How is retention improved for crowns?

Answer 5

Limiting path of I
6 degree taper
Grooves/slots
Longer walls

Question 6

Principles of Crown Prep (6)

Answer 6

1. Preserve tooth structure
2. Retention + resistance
3. Structural durability
4. Marginal integrity
5. Preservation of periodontium
6. Aesthetic consideration

Question 7

Steps to crown prep (5)

Answer 7

Occlusal reduction
Separation
Buccal reduction
Lingual reduction
Finishing

Question 8

MC prep values

Answer 8

Axial 0.5
Functional 1.5
Non functional 0.5
Finish 0.5 chamfer

Question 9

Ceramic prep values

Answer 9

Axial 1
Functional 1.5
Non functional 1
Finish 1 shoulder

Question 10

MCC prep values

Answer 10

Axial 1.3
Functional 1.8
Non functional 1.3
Finish 0.5 chamfer 0.4 shoulder

Question 11

All ceramic prep

Answer 11

Axial 1.5
Functional 1.5-2
Buccal shoulder