粉状/液体和即用型硅酸钙基封口剂的物理化学性质

Q2 Medicine Brazilian dental journal Pub Date : 2022-10-01 DOI:10.1590/0103-6440202204832
A. Janini, L. E. Pelepenko, B. P. Gomes, M. Marciano
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引用次数: 4

摘要

摘要硅酸钙基根管封闭剂已被开发成粉末/液体或预混即用形式。与现成材料EndoSequence BC Sealer(Brasseler)相比,对原型粉末/液体MTApex Sealer(Ultradent)的物理化学性质进行了评估。基于环氧树脂的糊剂/糊剂AH Plus(Dentsply)用作对照进行比较。根据ISO-6876/2012标准,对密封剂的凝结时间(在干燥和潮湿环境中)、流动性和辐射不透性进行了评估(n=6)。此外,还对pH值进行了评估。使用扫描电子显微镜(SEM)和能谱仪(EDS)评估材料的表面和化学特性。混合方差分析、Shapiro-Wilk、Levene和Bonferroni校正的事后分析的显著性水平为5%。MTApex Sealer表现出最高的流量,与潮湿环境相比,EndoSequence BC Sealer在干燥环境中的凝结时间明显更长;然而,对于MTApex Sealer和AH Plus,当提供额外的水分时,没有发生显著的变化。所有材料的辐射不透性都超过7mm Al,并且在21天的分析中显示出碱度降低。SEM/EDS评估导致钙、硅和相应的放射性奶嘴的峰值。原型粉末/液体MTApex Sealer在干燥和潮湿环境中具有最高的流量和相似的凝固时间;相反,EndoSequence BC Sealer受到外部水分的严重影响。这表明粉末/液体材料的设置似乎更可预测。
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Physico-chemical properties of calcium silicate-based sealers in powder/liquid and ready-to-use forms
Abstract Calcium silicate-based root canal sealers have been developed in powder/liquid or premixed ready-to-use forms. The evaluation of the physico-chemical properties of a prototype powder/liquid MTApex Sealer (Ultradent) in comparison to a ready-to-use material EndoSequence BC Sealer (Brasseler) was performed. The paste/paste epoxy resin-based AH Plus (Dentsply) served as control for comparisons. The sealers were evaluated (n = 6) regarding setting time (in dry and moist environments), flow and radiopacity, following the ISO-6876/2012 standard. Also, the pH was assessed. Material’s surface and chemical characterization was evaluated using scanning-electron-microscopy (SEM) and energy-dispersive-spectrometry (EDS). Mixed ANOVA, Shapiro-Wilk, Levene, and post-hoc analysis with Bonferroni correction were performed at a significance level of 5%. MTApex Sealer exhibited the highest flow and EndoSequence BC Sealer had a significantly longer setting time in dry compared to the moist environment; however, for MTApex Sealer and AH Plus no significant changes occurred when additional moisture was provided. All materials exceeded 7 mm Al of radiopacity and showed a decreasing alkalinity over the 21 day-analysis. SEM/EDS evaluation resulted in peaks of calcium, silicon, and the respective radiopacifier. The prototype powder/liquid MTApex Sealer had the highest flow and similar setting time in both dry and moist environments; opposingly, EndoSequence BC Sealer was crucially influenced by external moisture. This suggests that the powder/liquid materials’ setting seems to be more predictable.
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来源期刊
Brazilian dental journal
Brazilian dental journal Dentistry-Dentistry (all)
CiteScore
2.20
自引率
0.00%
发文量
69
审稿时长
12 weeks
期刊介绍: Brazilian Dental Journal, publishes Full-Length Papers, Short Communications and Case Reports, dealing with dentistry or related disciplines and edited six times a year.
期刊最新文献
Can a dentin bonding agent prevent color change in regenerative endodontic procedures? An in vitro evaluation Antibacterial ability of different activated irrigation after root canal preparation: intratubular analyses Inhibition of incipient caries lesion progression by different fluoridated varnishes A new hydroxyapatite-alginate-gelatin biocomposite favor bone regeneration in a critical-sized calvarial defect model Prevalence of lectures about dental esthetics and female speakers in three Brazilian conferences.
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