体外研究:手工锉和旋转锉系统对乳牙牙槽骨切除术中牙本质微裂缝形成的比较评估。

IF 2.3 Q2 DENTISTRY, ORAL SURGERY & MEDICINE
P Nisar, F Katge, V K Chimata, D Pradhan, D Patil, I Agrawal
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引用次数: 0

摘要

目的:牙髓切除术可用于治疗可修复的乳牙深层牙髓龋坏。可以使用手工或镍钛旋转锉对根管进行机械预备。然而,这可能会造成牙本质应力,从而导致牙本质微裂缝。因此,该研究旨在比较评估手工锉和旋转锉系统在乳牙牙根管切除术中牙本质微裂纹的形成情况。采用简单随机抽样法将根管分为四组(n = 20):A 组-Hedstrom 锉,B 组-Pro AF Baby Gold 旋转器,C 组-ProTaper Next 旋转器,D 组-未准备组。采用卡方检验(P)对是否存在微裂缝进行评估:A 组微裂缝总数为 1 条(5%),B 组为 4 条(20%),C 组为 9 条(45%),D 组为 0 条(0%),差异有统计学意义(P = 0.002)。在宫颈三分之一处,微裂缝的数量为:A 组 1 条(5%),B 组 0 条(0%),C 组 5 条(25%),D 组 0 条(0%)(P = 0.005)。在中间三分之一处,A 组的微裂纹数量为 0(0%),B 组为 4(20%),C 组为 4(20%),D 组为 0(0%)(p = 0.029):该研究得出的结论是,手工和旋转锉系统都会在基牙上形成牙本质微裂纹。ProTaper Next的微裂纹数量明显较多,其次是ProAF Baby Gold和H锉。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Comparative evaluation of hand and rotary file systems on dentinal microcrack formation during pulpectomy procedure in primary teeth: an in vitro study.

Purpose: Pulpectomy can be used for the management of deep dentinal carious lesions in primary teeth which can be restored. Mechanical preparation of root canals can be performed using hand or NiTi rotary files. However, this may cause dentinal stress and consequently dentinal microcracks. Hence, the aim was comparative evaluation of hand and rotary file systems on dentinal microcrack formation during pulpectomy procedure in primary teeth.

Methods: 60 extracted primary molar teeth were selected comprising of 80 root canals. Simple random sampling was used to divide root canals into four groups (n = 20): Group A-Hedstrom file, Group B-Pro AF Baby Gold rotary, Group C-ProTaper Next rotary, and Group D-unprepared group. Assessment was conducted on presence or absence of microcracks using Chi square test (p < 0.05).

Results: The total number of microcracks in Group A: one (5%), Group B: four (20%), Group C: nine (45%) and Group D: zero (0%) which was statistically significant (p = 0.002). At cervical third, the number of microcracks seen with Group A: one (5%), Group B: zero (0%), Group C: five (25%) and Group D: zero (0%) (p = 0.005). At the middle third, the number of microcracks seen in Group A: zero (0%), Group B: four (20%), Group C: four (20%) and Group D: zero (0%) (p = 0.029).

Conclusion: The study concluded that dentinal microcracks are formed with both hand and rotary file systems in primary teeth. ProTaper Next showed significantly higher number of microcracks, followed by ProAF Baby Gold and H files.

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来源期刊
European Archives of Paediatric Dentistry
European Archives of Paediatric Dentistry DENTISTRY, ORAL SURGERY & MEDICINE-
CiteScore
4.40
自引率
9.10%
发文量
81
期刊介绍: The aim and scope of European Archives of Paediatric Dentistry (EAPD) is to promote research in all aspects of dentistry for children, including interceptive orthodontics and studies on children and young adults with special needs. The EAPD focuses on the publication and critical evaluation of clinical and basic science research related to children. The EAPD will consider clinical case series reports, followed by the relevant literature review, only where there are new and important findings of interest to Paediatric Dentistry and where details of techniques or treatment carried out and the success of such approaches are given.
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