All- ceramic crown preparation and the remained wall thickness of the pulp chamber

ABSTRACT

Statement of Problem: A minimally invasive method of preparation is essential to prevent tooth structure weakening and pulp irritation; especially for mandibular anterior single-tooth all-ceramic crowns. According to many investigations, one of the most important reasons of pulp injury caused by tooth preparation for different restorative procedures is reduced "remained wall thickness" [RWT]. In order to protect the pulp from irritation, it is necessary to maintain a 0.5 mm of RWT