Falakaloğlu Seda, Yeniçeri Özata Merve, Güneş Betül, Silva Emmanuel João Nogueira Leal, Gündoğar Mustafa, Güçyetmez Topal Burcu
Department of Endodontics, School of Dentistry, İstanbul Health and Technology University, İstanbul, Turkey.
Department of Endodontics, School of Dentistry, Dicle University, Diyarbakır, Turkey.
Restor Dent Endod. 2023 Jul 24;48(3):e25. doi: 10.5395/rde.2023.48.e25. eCollection 2023 Aug.
The purpose of this study was to evaluate the influence of endodontic access cavities design on the removal of calcium hydroxide medication of the apical third of mandibular incisor root canal walls and dentinal tubules with different cleaning protocols: EDDY sonic activation, Er,Cr:YSGG laser-activated irrigation, or conventional irrigation with IrriFlex.
Seventy-eight extracted human mandibular incisors were assigned to 6 experimental groups ( = 13) according to the endodontic access cavity and cleaning protocol for calcium hydroxide removal: traditional access cavity (TradAC)/EDDY; ultraconservative access cavity performed in the incisal edge (UltraAC.Inc)/EDDY; TradAC/Er,Cr:YSGG; UltraAC.Inc/Er,Cr:YSGG; TradAC/IrriFlex; or UltraAC.Inc/IrriFlex. Confocal laser scanning microscopy images were used to measure the non-penetration percentage, maximum residual calcium hydroxide penetration depth, and penetration area at 2 and 4 mm from the apex. Data were statistically analyzed using Shapiro-Wilk and WRS2 package for 2-way comparison of non-normally distributed parameters (depth of penetration, area of penetration, and percentage of non-penetration) according to cavity and cleaning protocol with the significance level set at 5%.
The effect of cavity and cleaning protocol interactions on penetration depth, penetration area and non-penetration percentage was not found statistically significant at 2 and 4 mm levels ( > 0.05).
The present study demonstrated that TradAC or UltraAC.Inc preparations with different cleaning protocols in extracted mandibular incisors did not influence the remaining calcium hydroxide at 2 and 4 mm from the apex.
本研究旨在评估根管入口洞形设计对下颌切牙根尖三分之一根管壁及牙本质小管内氢氧化钙药物清除的影响，采用不同的冲洗方案：EDDY声波激活、铒铬：钇钪镓石榴石（Er,Cr:YSGG）激光激活冲洗或使用IrriFlex进行传统冲洗。
根据去除氢氧化钙的根管入口洞形和冲洗方案，将78颗拔除的人下颌切牙分为6个实验组（每组n = 13）：传统入口洞形（TradAC）/EDDY；在切缘进行的超保守入口洞形（UltraAC.Inc）/EDDY；TradAC/Er,Cr:YSGG；UltraAC.Inc/Er,Cr:YSGG；TradAC/IrriFlex；或UltraAC.Inc/IrriFlex。使用共聚焦激光扫描显微镜图像测量根尖2 mm和4 mm处的未穿透百分比、氢氧化钙最大残留穿透深度和穿透面积。使用Shapiro-Wilk和WRS2软件包对数据进行统计分析，以根据洞形和冲洗方案对非正态分布参数（穿透深度、穿透面积和未穿透百分比）进行双向比较，显著性水平设定为5%。
在2 mm和4 mm水平上，未发现洞形和冲洗方案的交互作用对穿透深度、穿透面积和未穿透百分比有统计学显著影响（P > 0.05）。
本研究表明，在拔除的下颌切牙中，采用不同冲洗方案的TradAC或UltraAC.Inc预备方法对距根尖2 mm和4 mm处的氢氧化钙残留量没有影响。
