Smear layer removal and ultramorphological changes of root canal dentin induced by erbium, chromium: Yttrium-scandium-gallium-garnet laser

Dunia Alhadi, N. Al-Rawi, Farah M. Jaber, Manaf Agah, Musab H Saeed
{"title":"Smear layer removal and ultramorphological changes of root canal dentin induced by erbium, chromium: Yttrium-scandium-gallium-garnet laser","authors":"Dunia Alhadi, N. Al-Rawi, Farah M. Jaber, Manaf Agah, Musab H Saeed","doi":"10.4103/2321-4619.180998","DOIUrl":null,"url":null,"abstract":"Aim: Using SEM & EDX analysis to evaluate: 1. The ability of Er;Cr;YSSG laser irradiation to the remove of smear layer from the root canal walls compared to the conventional EDTA/NaOCl irrigation technique 2. The effect of Er;Cr;YSSG laser irradiation on ultra morphologic characteristics and on the inorganic contents of root canal dentine. Materials and Methods: 18 single rooted freshly extracted human premolars) were chemomechanically prepared using protaper rotary nickel titanium (Ni-Ti) instruments (Dentsply maillefer) up to size 40/60 (F4) between each instruments 2 ml of 2.5% NaOcl were used. Samples were divided into two groups (n=8): Group A: 5 ml of 17% EDTA for 1 minute. Group B: Irradiation with Er;Cr;YSSG laser. Two teeth were used as a positive control (presence of smear layer). Teeth sections were evaluated by using the SEM and the EDX analysis. Results: It has been found that more than 70% of the examined samples in EDTA group showed significant removal of the smear layer in coronal, middle and apical third of the examined teeth. In Er;Cr;YSGG group, the coronal portion showed complete removal of the smear layer but with destruction of the inner wall of the dentin. In apical portion more than 87.5% of the samples showed the persistence of the smear layer in that region after laser treatment. When evaluating the degree of erosion, the highest degree was noted in the samples treated with Er,Cr;YSGG. Laser irradiation has less effect on the mineral contents of the root canal walls. Conclusions: The findings of the present study suggest that the use of Er;Cr;YSGG laser irradiation alone is significantly less effective in removing the apical third smear layer than the golden standard irrigation with 2.5% NaOCl and 17% EDTA.","PeriodicalId":17076,"journal":{"name":"Journal of Restorative Dentistry","volume":"126 1","pages":"48 - 52"},"PeriodicalIF":0.0000,"publicationDate":"2016-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"2","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Restorative Dentistry","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.4103/2321-4619.180998","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 2

Abstract

Aim: Using SEM & EDX analysis to evaluate: 1. The ability of Er;Cr;YSSG laser irradiation to the remove of smear layer from the root canal walls compared to the conventional EDTA/NaOCl irrigation technique 2. The effect of Er;Cr;YSSG laser irradiation on ultra morphologic characteristics and on the inorganic contents of root canal dentine. Materials and Methods: 18 single rooted freshly extracted human premolars) were chemomechanically prepared using protaper rotary nickel titanium (Ni-Ti) instruments (Dentsply maillefer) up to size 40/60 (F4) between each instruments 2 ml of 2.5% NaOcl were used. Samples were divided into two groups (n=8): Group A: 5 ml of 17% EDTA for 1 minute. Group B: Irradiation with Er;Cr;YSSG laser. Two teeth were used as a positive control (presence of smear layer). Teeth sections were evaluated by using the SEM and the EDX analysis. Results: It has been found that more than 70% of the examined samples in EDTA group showed significant removal of the smear layer in coronal, middle and apical third of the examined teeth. In Er;Cr;YSGG group, the coronal portion showed complete removal of the smear layer but with destruction of the inner wall of the dentin. In apical portion more than 87.5% of the samples showed the persistence of the smear layer in that region after laser treatment. When evaluating the degree of erosion, the highest degree was noted in the samples treated with Er,Cr;YSGG. Laser irradiation has less effect on the mineral contents of the root canal walls. Conclusions: The findings of the present study suggest that the use of Er;Cr;YSGG laser irradiation alone is significantly less effective in removing the apical third smear layer than the golden standard irrigation with 2.5% NaOCl and 17% EDTA.
铒、铬、钇、钪、镓、石榴石激光对根管牙本质涂抹层去除及超微改变的影响
目的:利用扫描电镜和EDX分析评价:Er;Cr;YSSG激光照射与传统EDTA/NaOCl灌洗技术对根管壁涂片层去除能力的比较Er、Cr、YSSG激光照射对根管牙本质超微形态特征及无机成分的影响。材料与方法:采用protaper旋转镍钛(Ni-Ti)器械(Dentsply maillefer),每个器械之间的尺寸为40/60 (F4),采用化学力学方法制备18颗单根新鲜提取的人前磨牙。将样品分为两组(n=8): A组:17% EDTA 5ml,持续1分钟。B组:Er;Cr;YSSG激光照射。两颗牙齿作为阳性对照(存在涂抹层)。通过扫描电镜和EDX分析对牙齿切片进行评估。结果:EDTA组70%以上的检查样本在检查牙齿的冠、中、尖三分之一处有明显的涂片层去除。Er;Cr;YSGG组冠状部分涂片层完全去除,但牙本质内壁破坏。在根尖部分,超过87.5%的样品在激光治疗后显示该区域的涂抹层持续存在。在评价侵蚀程度时,Er,Cr;YSGG处理的样品的侵蚀程度最高。激光照射对根管壁矿物质含量的影响较小。结论:本研究结果提示,单独使用Er;Cr;YSGG激光照射去除根尖第三涂抹层的效果明显低于2.5% NaOCl和17% EDTA的金标准冲洗。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
求助全文
约1分钟内获得全文 求助全文
来源期刊
自引率
0.00%
发文量
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:604180095
Book学术官方微信