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Dental Restoration Mechanical Considerations Quiz

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Dental Restoration Mechanical Considerations Quiz

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Questions and Answers

What can over contouring a restoration have a disastrous effect on?

The pulp chamber

The dentin

The periodontium (correct)

The enamel

What can inadequate axial reduction lead to in restorations?

Restorations with thick walls

Restorations with thin walls (correct)

Restorations with narrow isthmuses

Restorations with over-contoured occlusal surfaces

What contributes to the poor appearance of some metal-ceramic restorations?

Excessive porcelain thickness

Inaccurate metal framework

Incorrect occlusal adjustment

Insufficient porcelain thickness (correct)

What is important for esthetic partial coverage restorations?

Accurate placement of the visible facial and proximal margins Signup and view all the answers

What does the use of non-metallic restorations permit in terms of finish line?

Equi- or supra-gingival finish line Signup and view all the answers

What is the purpose of the functional cusp bevel?

To provide space for adequate bulk of metal in an area of heavy occlusal contact Signup and view all the answers

Why is adequate tooth reduction important in restoration construction?

To provide space for adequate bulk of material to withstand occlusal forces without deformation or fracture Signup and view all the answers

What is the recommended occlusal reduction for all-ceramic crowns on functional cusps?

2.0 mm Signup and view all the answers

What is the purpose of the reinforcing structures (struts) in restoration construction?

To distribute occlusal forces and strengthen the restoration Signup and view all the answers

Why should the basic pattern of the occlusal surface be duplicated in the preparation?

To provide adequate clearance without over-shortening the preparation Signup and view all the answers