Effect of different taper values and bioceramic sealer forms on fracture resistance of mandibular premolars prepared with single-file Ni-Ti systems: an in vitro study

Within the limitations of this in vitro study, variation in taper values and sealer forms did not affect fracture resistance. Both powder-liquid and premixed syringe forms demonstrated similar performance, suggesting that clinicians may choose between them based on handling preference and clinical practicality.