root canal file

Objective: To compare the clinical effects after root canal preparation with hand use stainless steel file, nickel titanium alloy engine file and root canal ultrasonic file.

目的：比较手用不锈钢锉，镍钛合金机用锉和超声根管锉在根管预备后的临床效果。

Good obturation was obtained in almost all cases. Conclusion: Under the clinical conditions, GT hand file can prepare curved root canals effectively and safely, and the GT instrumentation technique is an efficient root canal preparation method for curved canals.

结论：GT手用锉预备弯曲根管安全有效，预备后根管形态具有良好锥度和流畅度，GT器械预备技术可作为临床上预备弯曲根管的有效方法。

Conclusion: Compared file of stainless steel with traditional hand, ProFile flexible nickel titanium file had obvious advantages in root canal treatment.

结论：与传统手用不锈钢锉相比，ProFile机动镍钛锉在根管预备方面有明显的优势。

Clinical effect comparison of root canal preparation by nitinol file with stainless steel K file

镍钛及不锈钢手用根管预备器械的临床应用比较

Methods 250 adult patients who were diagnosed as pulpitis receiving root canal treatment were divided into two groups ( A and B) based on the randomly-paired principle. There were 140 patients in group A, root canals were prepared with traditional hand-driven K-file in step-back technique;

方法将250例患者250牙髓炎患牙按牙位、年龄、性别随机分为A、B两组，A组140例，140颗牙采用手用K锉逐步后退法预备根管；