连续、顺序螯合和不同搅拌技术对根管牙本质涂片层去除和显微硬度的影响(体外研究)。

IF 2.5 Q2 DENTISTRY, ORAL SURGERY & MEDICINE
Asmaa Aamir Kamil, Ahmed Hamid Ali, Federico Foschi, Francesco Mannocci
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引用次数: 0

摘要

背景/目的:本研究旨在评估和比较使用不同搅拌技术进行连续和连续螯合后根管内牙本质涂片层的消除和显微硬度。方法:对64例上颌第一磨牙腭根进行X3尺(Protaper Next锉)矫治。根据冲洗液的不同,将样品分为两组(N = 32/组),分别为3% NaOCl灌洗后加17% EDTA(顺序螯合(SC))或双冲洗(3% NaOCl/9% HEDP)灌洗(连续螯合(CC))。每组根据搅拌技术分为4个亚组(n = 8/亚组):常规针刺(CN)(对照组)、EndoActivator (EA)、超声搅拌(UAI)和Er.Cr.YSGG 2780 nm(激光)。SEM图像评估涂抹层,并在50和100µm深度进行维氏显微硬度(VHN)测试。数据分析采用:Kruskal-Wallis、Wilcoxon和Mann-Whitney U检验。p < 0.05为差异有统计学意义。结果:在UAI和激光搅拌中,与SC相比,CC在根尖和冠状三分之一处明显减少了涂片层的存在(p < 0.05),而在CN组和EA组中,SC与CC之间无显著差异(p < 0.05)。CC组牙本质的VHNs除CN组的根尖在50µm处、EA组和UAI组的冠状在100µm处外,其余各切面和深度均显著高于SC组。结论:CC与SC在去除涂抹层方面具有可比性。与SC相比,CC对牙本质的影响较小。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Effectiveness of Continuous and Sequential Chelation and Different Agitation Techniques on Smear Layer Removal and Microhardness of Root Canal Dentin (An In Vitro Study).

Background/Objectives: This study aimed to assess and compare the elimination of the smear layer and microhardness of dentin in root canals after sequential versus continuous chelation using different agitation techniques. Methods: Sixty-four palatal roots of upper first molars were instrumented to size X3 (Protaper Next files). According to the irrigant solution, samples were assigned to two groups (N = 32/group), 3% NaOCl irrigation followed by 17% EDTA (sequential chelation (SC)), or dual-rinse (3% NaOCl/9% HEDP) irrigation (continuous chelation (CC)). Each group has been divided into four subgroups (n = 8/subgroup), based on agitation techniques used: conventional needle (CN) (control group), EndoActivator (EA), ultrasonic agitation (UAI), and Er.Cr.YSGG 2780 nm (laser). SEM images assessed the smear layer, and Vicker microhardness (VHN) was performed at 50 and 100 µm depths. Data were analyzed using: Kruskal-Wallis, Wilcoxon, and the Mann-Whitney U test. Statistical significance was set at p < 0.05. Results: In the UAI and laser agitation, CC significantly reduced the smear layer presence compared to SC in the apical and coronal thirds, respectively (p < 0.05), and no significant differences were observed in the CN and EA groups between SC and CC (p > 0.05). There were significantly higher VHNs of dentine in CC groups than in SC groups in all sections and depths, except in the apical of the CN group at 50 µm and the coronal section of EA and UAI groups at 100 µm. Conclusions: CC was comparable to SC in smear layer removal. CC had a less detrimental effect on dentin compared with SC.

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来源期刊
Dentistry Journal
Dentistry Journal Dentistry-Dentistry (all)
CiteScore
3.70
自引率
7.70%
发文量
213
审稿时长
11 weeks
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