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Peracetic acid as a single endodontic irrigant: effects on microhardness, roughness and erosion of root canal dentin
Microscopy Research and Technique ( IF 2.5 ) Pub Date : 2019-12-13 , DOI: 10.1002/jemt.23424
Kátia C Keine 1 , Milton C Kuga 1 , Hernán Coaguila-Llerena 1 , Regina G Palma-Dibb 2 , Gisele Faria 1
Affiliation  

The aim was to assess the effects of 1% peracetic acid (PAA) as a single endodontic irrigant on microhardness, roughness, and erosion of root canal dentin, compared with 2.5% sodium hypochlorite (NaOCl) and with 2.5% NaOCl combined with 17% EDTA. Forty human, single‐rooted tooth hemisections were submitted to Knoop microhardness test, before and after the following irrigation protocols: PAA = 1% PAA; NaOCl = 2.5% NaOCl; NaOCl‐EDTA‐NaOCl = 2.5% NaOCl +17% EDTA +2.5% NaOCl; and SS = saline. Another 40 roots were instrumented, irrigated with the same protocols, and sectioned longitudinally. The roughness analysis was performed on the mesial section using a confocal laser scanning microscope, whereas erosion was analyzed on each third of the distal section, using a scanning electron microscope. The data were analyzed using ANOVA and Tukey post‐tests, and Kruskal‐Wallis and Dunn post‐tests (α = .05). The PAA and NaOCl‐EDTA‐NaOCl groups showed no significant differences (p > .05); both promoted reduction in microhardness and increase in roughness, compared with the NaOCl and SS groups (p < .05). NaOCl‐EDTA‐NaOCl promoted higher erosion in the cervical and middle thirds than the other groups (p < .05); there was no difference among PAA, NaOCl, and SS (p > .05). There was also no difference among the groups regarding the apical third (p > .05). PAA used as a single endodontic irrigant caused reduction in root canal dentin microhardness and increase in roughness in a similar way to NaOCl‐EDTA‐NaOCl; however, PAA caused less erosion than NaOCl‐EDTA‐NaOCl.

中文翻译:

过氧乙酸作为单一牙髓冲洗剂:对根管牙本质的显微硬度,粗糙度和侵蚀的影响

目的是评估2.5%的次氯酸钠(NaOCl)和2.5%的次氯酸钠(NaOCl)和17%的17%的过氧乙酸(PAA)作为单一牙髓冲洗剂对根管牙本质的显微硬度,粗糙度和侵蚀的影响EDTA。在以下冲洗方案之前和之后,将四十个人类单根牙齿半个切片接受了努氏显微硬度测试:PAA = 1%PAA;NaOCl = 2.5%NaOCl; NaOCl-EDTA-NaOCl = 2.5%NaOCl + 17%EDTA + 2.5%NaOCl; SS =盐水。仪表另外40个根,用相同的方法灌溉,并纵向切片。使用共聚焦激光扫描显微镜对中段进行粗糙度分析,而使用扫描电子显微镜对远端部分的每三分之一进行腐蚀分析。使用ANOVA和Tukey后测对数据进行了分析,以及Kruskal-Wallis和Dunn后测(α= .05)。PAA和NaOCl-EDTA-NaOCl组之间没有显着差异(p > .05); 与NaOCl和SS组相比,两者都促进了显微硬度的降低和粗糙度的增加(p <.05)。NaOCl-EDTA-NaOCl促进了宫颈糜烂和中三分之二的糜烂(p <.05)。PAA,NaOCl和SS之间没有差异(p > .05)。各组之间在心尖第三方面也没有差异(p > .05)。PAA用作单一牙髓冲洗剂,与NaOCl-EDTA-NaOCl相似,导致根管牙本质显微硬度降低,粗糙度增加;但是,PAA造成的侵蚀少于NaOCl-EDTA-NaOCl。
更新日期:2019-12-13
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