灭菌对两种不同旋转镍钛刀具切割效率的影响（体外研究）。

IF 2.6 2区医学 Q1 DENTISTRY, ORAL SURGERY & MEDICINE

BMC Oral Health Pub Date : 2025-07-16 DOI:10.1186/s12903-025-06534-w

Merna Mamdouh Botros, Kariem Mostafa ElBatouty, Tariq Yehia Abdelrahman

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引用次数: 0

摘要

背景：牙科旋转器械可应用于多种根管条件下。本研究通过评估两批NiTi牙科旋转锉- mani Jizai （Jz）和Dentsply ProTaper Next (PTN)-的切削效率来评估其性能。方法：采用8倍放大镜进行缺陷检查，各40份，其中一半在灭菌前，另一半在灭菌后。在拔除的上磨牙分布根处测试样本量，通过显示去除的牙本质体积的体积变化来评估切割效率。结果：灭菌后的PTN锉在5 mm处性能较好，10 mm处各锉组间无显著差异。在15 mm处，灭菌后的PTN文件的性能不如未灭菌的Jz文件。结论：灭菌和热处理通过体积变化影响锉的切削效率，尤其是冠状和根尖的三分之一。

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Effect of sterilization on the cutting efficiency of two different rotary NiTi instruments (An In- vitro Study).

Background: Dental rotary instruments can be applied under multiple canal conditions. This study assessed the performance of two batches of NiTi dental rotary files-Mani Jizai (Jz) and Dentsply ProTaper Next (PTN)-by evaluating their cutting efficiency.

Methods: A total of 80 files (40 from each type), with 8x digital microscope magnification used for defect inspection, were tested half of which before and the other half after sterilization. The sample size was tested in extracted upper molars' distobuccal (DB) roots to assess cutting efficiency by volumetric changes showing removed dentin volume.

Results: The Results indicated that the sterilized PTN files performed better at 5 mm, but no significant differences were noted at 10 mm between all file groups. At 15 mm, the performance of sterilized PTN files was inferior to that of non-sterilized Jz files.

Conclusion: Sterilization and heat treatment affect file cutting efficiency by volumetric changes, especially at the coronal and apical one-thirds.

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来源期刊

BMC Oral Health DENTISTRY, ORAL SURGERY & MEDICINE-

CiteScore

3.90

自引率

6.90%

发文量

481

审稿时长

6-12 weeks

期刊介绍： BMC Oral Health is an open access, peer-reviewed journal that considers articles on all aspects of the prevention, diagnosis and management of disorders of the mouth, teeth and gums, as well as related molecular genetics, pathophysiology, and epidemiology.