Crown Preparation Techniques

Flashcards covering key concepts and vocabulary from crown preparation techniques.

Gingival finishing line

A shoulder of 1.5mm width used to provide a flat seat that resists forces directed from the incisal.

Incisal edge preparation

Should be flat and prepared with a slight inclination lingually to avoid sharp angles.

Stress concentration

A condition where stress is concentrated at sharp angles, increasing the risk of fracture.

PJC

A type of crown preparation to be avoided on teeth with edge to edge occlusal relation.

Armamentarium

The collection of instruments required for a dental procedure, including handpieces and various types of diamond burs.

Depth-orientation grooves

Grooves placed on the labial and incisal surfaces to accurately gauge depth of reduction.

Incisal reduction

The process of reducing the incisal edge to allow access to the finish line area of the preparation.

Lingual reduction

Reduction performed to the lingual surface of a tooth, careful not to over-reduce the junction between the cingulum and the lingual wall.

Retentive preparation

A preparation design that ensures adequate retention of the crown on the tooth.

Cavosurface angle

The angle formed between the wall of the preparation and the external surface, often modified for smoother transitions.