MARGINAL GEOMETRY

 FINISH LINE CONFIGURATION

1.     Chamfer

2.     Heavy chamfer

3.     Shoulder

4.     Shoulder with bevel

5.     Knife edge

 

  PRESERVATION OF THE PERIODONTIUM

•         The placement of finish lines has a direct bearing on the ease of fabrication and the ultimate success of the restoration.

•         The best results  can be expected from margins that are as smooth as possible and are fully exposed to cleansing action.  

 INTRODUCTION

  •         Tooth Preparation is a clinical procedure  consisting of removal of tooth structures and / or shaping of the tooth to accommodate a fixed restoration