热处理器械在扁平和弯曲根管内生物力学性能的显微层析分析。

IF 3.5 2区医学 Q1 DENTISTRY, ORAL SURGERY & MEDICINE

Journal of endodontics Pub Date : 2025-03-01 DOI:10.1016/j.joen.2024.12.012

Julia Godoi Lopes DDS , Jeneffer Vieira Rodrigues DDS, MSc , Iago Ramirez DDS, MSc , Rafael Verardino de Camargo DDS, MSc , Graziela Bianchi Leoni DDS, MSc, PhD , Manoel Damião Sousa-Neto DDS, MSc, PhD , Fabiane Carneiro Lopes-Olhê DDS, MSc, PhD , Jardel Francisco Mazzi-Chaves DDS, MSc, PhD

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引用次数: 0

摘要

目的：本研究旨在评估不同机械系统对下颌第一磨牙根管系统（RCS）几何形状和牙本质厚度的影响。该假设提出，不同的体系会产生显著差异的RCS制备。方法：选取下颌磨牙近端和远端根管，根据使用的系统分为5组（n=10）： 2Shape（25.06）、Reciproc Blue（25.08）、ProTaper Ultimate（25.08）、ProTaper Next（25.06）和Univy New（25.06）。按照每个制造商的说明进行生物力学准备。准备前后进行MicroCT扫描，评估三维参数（体积、表面积、SMI和准备好的根管壁）和二维参数（面积、周长、直径、圆度和运输）。结果：ProTaper Ultimate在近端椎管容积增加最多（1.73±0.19），而ProTaper Next在远端椎管容积增加最多（1.95±0.25）。此外，ProTaper最终导致最大的牙本质去除和最大的预备面积。Reciproc Blue对圆形的效果最好，其预备壁较低（15.3±6.97）。结论：所有系统都产生了相似的结果，ProTaper Ultimate的体积增加和牙本质去除效果最大，表明其制备方法不太保守。Reciproc Blue提供最佳的圆度和最小化未准备的根管壁表面。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Microtomographic Analysis of the Biomechanical Performance of Thermally Treated Instruments in Flattened and Curved Root Canals

Introduction

This study aimed to evaluate, using microcomputed tomography, the impact of various mechanized systems on the geometry of the root canal system and dentin thickness in mandibular first molars. The hypothesis proposed that different systems would produce significant variations in root canal system preparation.

Methods

Mesial and distal canals of mandibular molars were selected and divided into 5 groups (n = 10) based on the system used: 2Shape (25.06), Reciproc Blue (25.08), ProTaper Ultimate (25.08), ProTaper Next (25.06), and Univy New (25.06). Biomechanical preparation was performed following each manufacturer's instructions. Microcomputed tomography scans were conducted before and after preparation to assess 3-dimensional parameters (volume, surface area, Structural Model Index, and prepared root canal walls) and 2-dimensional parameters (area, perimeter, diameters, roundness, and transportation).

Results

ProTaper Ultimate exhibited the greatest volume increase in mesial canals (1.73 ± 0.19), while ProTaper Next demonstrated the highest increase in distal canals (1.95 ± 0.25). Furthermore, ProTaper Ultimate resulted in the greatest dentin removal and the largest postpreparation area. Reciproc Blue achieved the best results for roundness and had the lower unprepared walls (15.3 ± 6.97).

Conclusions

All systems produced comparable outcomes, with ProTaper Ultimate yielding the greatest volume increase and dentin removal, indicating a less conservative preparation. Reciproc Blue provided optimal roundness and minimized unprepared root canal wall surfaces.

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来源期刊

Journal of endodontics 医学-牙科与口腔外科

CiteScore

8.80

自引率

9.50%

发文量

224

审稿时长

42 days

期刊介绍： The Journal of Endodontics, the official journal of the American Association of Endodontists, publishes scientific articles, case reports and comparison studies evaluating materials and methods of pulp conservation and endodontic treatment. Endodontists and general dentists can learn about new concepts in root canal treatment and the latest advances in techniques and instrumentation in the one journal that helps them keep pace with rapid changes in this field.