Dental Preparation Techniques Quiz

What is the preferred method for protecting adjacent teeth during preparation?

What should be done to all sharp angles and corners of a preparation?

Which tool is recommended for finishing preparation?

What risk is associated with using a metal matrix band around a tooth?

What is the correct convergence angle for proper tooth preparation?

What is the purpose of occlusal guiding grooves during tooth preparation?

Which tool is NOT mentioned as a method for evaluating occlusal clearance?

What is one advantage of performing anatomical occlusal reduction?

How many alignment grooves should be placed on each buccal and lingual wall during axial alignment?

What does axial reduction begin with?

Which aspect should be considered to avoid pulp involvement during tooth preparation?

What is the primary benefit of the 'corrugated effect' in restorations?

What is an important consideration for tooth preparations when dealing with the pulp chamber?

Types of Tooth Preparations

All-Ceramic Crown
Metal – Ceramic Crown

Clinical Procedures for Tooth Preparation

Occlusal guiding grooves
Occlusal reduction
Axial alignment grooves
Axial reduction
Finishing
Evaluation

Occlusal Guiding Grooves

Located on the occlusal surface of the tooth

Occlusal Reduction

Performed after guiding grooves are placed.
One half of the tooth is maintained as a reference point.
Anatomical Occlusal Reduction:
- Conserves tooth structure.
- Prevents pulp involvement.
- Adds rigidity to restoration through "Corrugated effect" of planes.
Functional cusp bevel is placed after occlusal reduction.

Evaluating Occlusal Clearance

Utility wax
Occlusal reduction gauge
Silicon index

Axial Alignment Grooves

Three grooves placed in each buccal and lingual wall.
One in the center and one in each mesial and distal transitional line angle.

Axial Reduction

Completed first on either the mesial or distal half of the tooth.
The remaining intact tooth serves as a reference.

Tooth Preparation Considerations

Account for the geometry of the pulp chamber
Reduce tooth while considering dentine thickness and pulp involvement.

Achieving Correct Convergence Angle

Use a metal matrix band placed around the adjacent tooth to provide protection.
The preferred method is to use the proximal enamel of the tooth being prepared to protect the adjacent tooth.

Margin Considerations

1mm shoulder margin is preferred.

Finishing

Rounded off all sharp angles and corners.
Utilize fine grit diamond bur for finishing.

All-Ceramic vs. Metal-Ceramic Preparation Differences

There are differences in preparation based on the type of crown.

Test your knowledge on various types of tooth preparations and clinical procedures involved in dental restoration. This quiz covers essential techniques such as occlusal reduction, axial alignment, and evaluation methods, providing a comprehensive overview of the topic. Perfect for dental students and professionals to refresh their understanding.