Access cavity in endodontics: Balancing precision, preservation, and clinical needs.

Endodontic access cavity preparation is a critical step that directly influences subsequent endodontic procedures. Procedural errors in this initial phase, whether in position, depth, or extension, can inevitably compromise the outcome of the entire treatment. Although access cavity preparation was historically believed not to weaken the tooth, more recent studies suggest otherwise. Therefore, adhering to tissue preservation principles is essential even during access cavity preparation. The mantra "as small as practical" should guide every stage of this step, balancing tissue preservation with clinical imperatives. Access cavity is dynamic, is not dogmatically predetermined, is adaptable at any time to intraoperative requirements, and must be tailored to each specific case. Achieving this, however, necessitates appropriate equipment and competencies, which require a relatively long learning curve for the clinician.