Impact of laser and sonic activated irrigation on obturation quality in conservatively prepared mandibular molars: a micro-CT analysis.

IF 3.1 2区医学 Q1 DENTISTRY, ORAL SURGERY & MEDICINE

Clinical Oral Investigations Pub Date : 2025-06-19 DOI:10.1007/s00784-025-06373-7

Megan Yamaguchi, Ane Poly, Alexander Huynh, Poorya Jalali

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引用次数: 0

Abstract

Introduction: The objective of this study was to compare the quality of obturation in the mesial roots of mandibular molars with isthmuses, using Er, Cr: YSGG laser and sonic-activated irrigation, assessed by micro-CT scanning.

Methods: Mesial canals of extracted mandibular molars were instrumented to a master apical file size of 20/V06. The final irrigation protocol included 2.5% NaOCl, 17% EDTA, and a final rinse with 2.5% NaOCl, applied with either sonic-activated or laser-activated irrigation using the WaterLase iPlus (BIOLASE, Inc, Foothill Ranch, CA). Canals were obturated with Bioceramic Sealer HiFlow (Brasseler, Savannah, GA) and gutta-percha cones. Micro-computed tomography scans were obtained before and after obturation to evaluate the quality of obturation, determined by the percentage of unfilled spaces in each irrigation group.

Results: There was no statistically significant difference in baseline canal characteristics, including isthmus width, canal volume, root curvature, and Weine classification between the groups (p > 0.05). In the post-obturation evaluation with micro-CT, the mean percentage of unfilled spaces was higher in the sonic group (17.24%) than in the laser group (10.73%), showing a statistically significant difference (p < 0.05).

Conclusions: This study suggests that laser-activated irrigation may improve the quality of obturation in mandibular molars with isthmuses compared to sonic-activated irrigation.

Clinical significance: This study demonstrates that laser-activated irrigation can lead to a higher quality of obturation in conservatively instrumented canals by reducing the percentage of unfilled spaces. However, these findings should be cautiously interpreted, as the improved obturation quality observed may not directly translate to clinical outcomes. Further research is needed to determine if this advanteg influence long-term treatment success.

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激光和声波激活灌洗对保守制备的下颌磨牙封闭质量的影响：微ct分析。

前言：本研究的目的是比较下颌磨牙近中根与峡部的封闭质量，采用Er， Cr: YSGG激光和声控灌洗，并通过微ct扫描评估。方法：将拔除的下颌磨牙中近端根管矫治至20/V06。最终的灌溉方案包括2.5% NaOCl, 17% EDTA，最后用2.5% NaOCl冲洗，使用WaterLase iPlus （BIOLASE, Inc ., Foothill Ranch， CA）进行声波激活或激光激活灌溉。用biocceramic Sealer HiFlow （Brasseler, Savannah， GA）和杜胶胶锥封闭管道。通过每个灌洗组未填充间隙的百分比，在灌洗前后进行微计算机断层扫描，以评估灌洗质量。结果：两组间峡部宽度、根管容积、根曲率、Weine分类等根管基线特征比较，差异均无统计学意义（p < 0.05）。在微创ct封闭后评价中，超声组的平均空隙未填充率（17.24%）高于激光组（10.73%），差异有统计学意义(p)。结论：本研究提示，与超声激活灌洗相比，激光激活灌洗可改善下颌峡部磨牙的封闭质量。临床意义：本研究表明，激光激活灌洗可以通过减少未填充空间的百分比来提高保守器械管的封闭质量。然而，这些发现应该谨慎解释，因为观察到的改善的闭孔质量可能不会直接转化为临床结果。需要进一步的研究来确定这一优势是否会影响长期治疗的成功。

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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来源期刊

Clinical Oral Investigations 医学-牙科与口腔外科

CiteScore

6.30

自引率

5.90%

发文量

484

审稿时长

3 months

期刊介绍： The journal Clinical Oral Investigations is a multidisciplinary, international forum for publication of research from all fields of oral medicine. The journal publishes original scientific articles and invited reviews which provide up-to-date results of basic and clinical studies in oral and maxillofacial science and medicine. The aim is to clarify the relevance of new results to modern practice, for an international readership. Coverage includes maxillofacial and oral surgery, prosthetics and restorative dentistry, operative dentistry, endodontics, periodontology, orthodontics, dental materials science, clinical trials, epidemiology, pedodontics, oral implant, preventive dentistiry, oral pathology, oral basic sciences and more.