[Methods of opening the pulp chamber]

The correct opening of the pulp chamber is essential for the success of the endodontic therapy. Though varying following the different anatomy of the teeth, the opening of the pulp chamber must follow some fundamental rules: no undercuts between the floor of the chamber and the walls of the access cavity, complete removal of the roof of the chamber, unrestricted view of the opening of the canals and of possible accessory canals. The ideal shape of the access cavity should be a funnel with the larger diameter towards the occlusal surface. This shape should be modified following the anatomy of the different teeth.