Alqerban Ali, Alrashed Muath, Alqerban Asma, Algohar Ahmed, Alqhtani Nasser, Aljhani Ali S, Alharbi Fahad, Samran Abdulaziz
Department of Preventive Dental Science, Dar Al Uloom University, Riyadh, Saudi Arabia; Department of Preventive Dental Sciences, College of Dentistry, Prince Sattam bin Abdulaziz University, Alkharj, Saudi Arabia.
Department of Preventive Dental Sciences, College of Dentistry, Prince Sattam bin Abdulaziz University, Alkharj, Saudi Arabia.
Photodiagnosis Photodyn Ther. 2021 Mar;33:102107. doi: 10.1016/j.pdpdt.2020.102107. Epub 2020 Nov 24.
The aim of the present study was to evaluate the bond integrity of bioactive cement (BA) in contrast to conventional cement Calibra (C) after dentin treated with different surface conditioners (PDT, EYL, ECL) MATERIALS AND METHODS: Sixty non-carious permanent mandibular molars were disinfected and embedded in acrylic resin till cement-o-enamel junction. For homogeneity the buccal surface were grounded and polished. Samples were categorized into three main groups based on conditioning technique. Samples in group 1 and 2 dentin conditioned with Er,Cr:YSGG (ECL), group 3 and 4 surface treated with Er:YAG (EYL) and group 5 and 6 treated with photodynamic therapy (PDT).On conditioned surface bonding agent was applied and light cured. Samples from group 1,3,5 were bonded to Calibra (C). Whereas, specimens in group 2,4,6 were conditioned with bioactive cement (BA) and subjected to ageing followed by shear bond strength testing (SBS) in universal testing machine. To detect significance difference between means of different groups analysis of variance (ANOVA) was performed followed by Tukey's post-hoc tests.
The maximum SBS was displayed in group 1, dentin conditioned with ECL and bonded to C (20.23 ± 0.47 MPa). Whereas, group 6, PDT of dentin to BA demonstrated lowest bond integrity among experimental groups (12.97 ± 0.25 MPa). Bond strength of group 1, ECL-C (21.55 ± 3.08 MPa) and group 3 EYL-C (19.11 ± 0.65 MPa) were comparable (p > 0.05). Group 5 samples treated with PDT, MB-C (13.41±0.32 MPa) and group 6, MB-BA (12.97 ± 0.25 MPa) were also comparable (p > 0.05) CONCLUSION: BAc bonded to dentin after surface conditioning with ECL, EYL and PDT presented lower SBS in comparison to conventional cement C. Further studies are required to extrapolate the current findings.
本研究旨在评估在使用不同表面处理剂（PDT、EYL、ECL）处理牙本质后，生物活性粘固剂（BA）与传统粘固剂Calibra（C）相比的粘结完整性。
选取60颗非龋性恒牙下颌磨牙进行消毒，然后嵌入丙烯酸树脂直至牙骨质-釉质界。为保证均匀性，对颊面进行打磨和抛光。根据处理技术将样本分为三个主要组。第1组和第2组的牙本质用铒铬：钇钪镓石榴石（ECL）处理，第3组和第4组用铒：钇铝石榴石（EYL）进行表面处理，第5组和第6组用光动力疗法（PDT）处理。在处理过的表面涂抹粘结剂并光固化。第1、3、5组的样本粘结到Calibra（C）上。而第2、4、6组的样本用生物活性粘固剂（BA）处理，进行老化处理，然后在万能试验机上进行剪切粘结强度测试（SBS）。为检测不同组均值之间的显著差异，进行方差分析（ANOVA），随后进行Tukey事后检验。
第1组（用ECL处理牙本质并粘结到C上）显示出最大的SBS（20.23±0.47MPa）。而第6组（牙本质用PDT处理后粘结到BA上）在各实验组中显示出最低的粘结完整性（12.97±0.25MPa）。第1组（ECL-C，21.55±3.08MPa）和第3组（EYL-C，19.11±0.65MPa）的粘结强度具有可比性（p>0.05）。第5组（用PDT处理，MB-C，13.41±0.32MPa）和第6组（MB-BA，12.97±0.25MPa）也具有可比性（p>0.05）。
与传统粘固剂C相比，用ECL、EYL和PDT进行表面处理后粘结到牙本质上的BA显示出较低的SBS。需要进一步的研究来推断当前的研究结果。
