Minimally invasive endodontic treatment through the labial/buccal cervical approach - protocol and case series.

Introduction: Traditional access cavity preparation involves removing the roof of the pulp chamber and smoothing the dentin bulges at the root canal orifice, thereby creating straight-line access. However, this may damage more healthy dental tissue and reduce the tooth's fracture resistance. This case series presents a novel minimally invasive endodontic protocol for one maxillary canine and four mandibular premolars, which required root canal therapy due to labial/buccal cervical decay that caused pulpitis or periapical periodontitis.

Methods: Our treatment protocol includes the following steps: preoperative assessment, removing decay in the labial/buccal cervical region, preparing an endodontic access cavity utilizing the affected region, establishing a working-length reference line using resin, cleansing the pulp horn with ultrasonic retro-preparation tip, root canal preparation, disinfection, obturation through the labial/buccal cervical access, and final resin restoration.

Results: Ideal root canal obsturation outcomes were achieved in all cases, while avoiding the abrasion of tooth tissue at the pulp chamber roof, caused by traditional endodontic access cavity methods.

Conclusions: Minimally invasive endodontic treatment through the labial/buccal cervical approach offers clinicians new insights and options for endodontic access design.