Assessment of the fracture resistance of teeth instrumented using 2 rotary and 2 reciprocating files versus the Self-Adjusting File (SAF): An ex vivo comparative study on mandibular premolars

评估使用 2 个旋转锉和 2 个往复锉与自适应锉 (SAF) 进行器械预备后牙齿的抗折强度：一项针对下颌前磨牙的离体比较研究