Impact of different disinfection protocols on the bond strength of NeoMTA 2 bioceramic sealer used as a root canal apical plug (in vitro study).

IF 2.5 Q2 DENTISTRY, ORAL SURGERY & MEDICINE BDJ Open Pub Date : 2024-09-23 DOI:10.1038/s41405-024-00257-w
Nada Omar, Nihal Refaat Kabel, Muhammad Abbass Masoud, Tamer M Hamdy
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Abstract

Introduction: Treatment of an immature permanent tooth required a special disinfection protocol due to the presence of thin radicular walls, which are prone to fracture. Mineral Trioxide Aggregate (MTA) has been proposed as a root repair material for root canal treatment. The aim of this in vitro study was to compare the push-out bond strength of conventional White MTA cements and second generation NeoMTA 2 in imitated immature roots treated with different disinfection protocols, which are 5.25% sodium hypochlorite (NaOCl), followed by 17% ethylenediaminetetraacetic acid (EDTA), and NaOCl, followed by 20% etidronic acid (HEBP).

Methods: The root canals of freshly extracted single-root teeth were manually prepared until 90 K-file to imitate immature roots. Roots were randomly divided into four groups (G) according to the disinfection protocol (n = 15 per group). where G1 (NaOCl + EDTA + White MTA) and G2 (NaOCl + EDTA + NeoMTA 2) While G3 (NaOCl + HEBP + White MTA) and G4 (NaOCl + HEBP + NeoMTA 2) All groups were activated with manual agitation. All specimens were incubated for 48 h. The apical third of each root was perpendicularly sectioned to attain a slice of 3 mm thickness. Push-out bond strength values were assessed using a two-way ANOVA and a Student's t test.

Results: G3 and G4 that were treated with HEPB showed higher significant push-out bond strength mean values than G1 and G2 treated with an EDTA chelating agent. Irrespective of the chelating agent used, it was found that both NeoMTA 2 and White MTA had no significant influence on push-out bond strength mean values (p ≤ 0.05).

Conclusion: The combined use of 5.25% NaOCl and 20% HEBP increased the push-out strength values of both NeoMTA 2 and White MTA, rendering them suitable to be used as an alternative chelating agent to EDTA.

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不同消毒方案对用作根管根尖塞的 NeoMTA 2 生物陶瓷封闭剂粘接强度的影响(体外研究)。
简介治疗未成熟恒牙需要特殊的消毒方案,因为根管壁很薄,容易断裂。三氧化二铝骨料(MTA)已被提议作为根管治疗的根部修复材料。这项体外研究的目的是比较传统白色 MTA 水门汀和第二代 NeoMTA 2 在使用不同消毒方案(5.25% 次氯酸钠(NaOCl),然后是 17% 乙二胺四乙酸(EDTA),以及 NaOCl,然后是 20% 乙膦酸(HEBP))处理的模仿未成熟根中的推出粘接强度:对刚拔出的单根牙根管进行人工预备,直至 90 K-锉,以模仿未成熟的牙根。其中,G1(NaOCl + EDTA + White MTA)和 G2(NaOCl + EDTA + NeoMTA 2),G3(NaOCl + HEBP + White MTA)和 G4(NaOCl + HEBP + NeoMTA 2)。将每个牙根顶端三分之一处垂直切片,切片厚度为 3 毫米。使用双向方差分析和学生 t 检验来评估推出粘接强度值:结果:使用 HEPB 处理的 G3 和 G4 比使用 EDTA 螯合剂处理的 G1 和 G2 显示出更高的显著推出粘接强度平均值。无论使用哪种螯合剂,NeoMTA 2 和白色 MTA 对推出粘接强度平均值都没有显著影响(p ≤ 0.05):结论:联合使用 5.25% NaOCl 和 20% HEBP 可提高 NeoMTA 2 和 White MTA 的推出强度值,使其适合用作 EDTA 的替代螯合剂。
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来源期刊
BDJ Open
BDJ Open Dentistry-Dentistry (all)
CiteScore
3.70
自引率
3.30%
发文量
34
审稿时长
30 weeks
期刊最新文献
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