Aim: The present study aimed to examine the effect of different endodontic access cavity designs on the amount of apically extruded debris.
Material and Methods: Sixty caries-free mandibular first molars were used. Before starting the access cavity preparations, all teeth were scanned on a Cone Beam Computed Tomography (CBCT) scanner in order to outline the pulp chamber of the teeth. Four groups were planned according to the prepared cavity design; the groups are as follows (n: 15):
Traditional Endodontic Cavity group (TEC), Conservative Endodontic Cavity group(CEC),
Truss Endodontic Cavity group (TREC) and Ninja Endodontic Cavity group (NEC). The weight of exuded debris residues was determined by subtracting the initial weights from the final weights of the tubes containing the debris.
Results: Significantly less apical debris output was observed in the NEC group compared to CEC and TEC. There was no significant difference between the TREC group and the CEC and TEC groups in terms of the amount of apically extruded debris.
Conclusion: It can be concluded that the NEC design was associated with significantly less debris extrusion than the TEC and CEC designs. The amount of apically extruded debris was lower in the TREC group compared to TEC and CEC.