Arhun Neslihan, Kalender Bercem, Tuncer Duygu, Berkmen Begum, Celik Cigdem
Department of Restorative Dentistry, Faculty of Dentistry, Baskent University, Ankara, Turkey.
Department of Restorative Dentistry, Private Clinic, Ankara, Turkey.
J Conserv Dent. 2020 Jan-Feb;23(1):32-35. doi: 10.4103/JCD.JCD_47_19. Epub 2020 Oct 10.
Application of adhesive systems on dentin is a multistep, technique-sensitive procedure. Thus, the aim was to assess the effect of operator experience on the shear bond strength of an etch-and-rinse adhesive system and a self-etch adhesive system on dentin.
Forty-eight extracted human molar teeth were used in the study. They were embedded in an acrylic resin after cutting off the roots. The mesial and distal enamels of the teeth were removed to expose dentin surfaces. The samples were allocated to four groups ( = 12): Group 1: restorative dentistry specialist with 13 years of experience, Group 2: with 6 years of experience, Group 3: postgraduate operator with 2 years of experience, and Group 4: undergraduate student with 1 year of experience and familiar with adhesive with systems. Each operator applied an etch-and-rinse adhesive system (Adper Single Bond 2) to mesial surface and a self-etch adhesive system (Clearfil SE Bond) to distal surface ( = 12). Then, a composite resin (Filtek Z250) was inserted with the aid of a plastic ring (2 mm × 2 mm) and light polymerized. The specimens were stored in distilled water before shear bond strength test. A two-way ANOVA test was used for statistical analysis.
No statistically significant difference was found between each operator type with respect to etch-and-rinse adhesive system ( > 0.05); however, the undergraduate student performed better than 2-year experienced operator with respect to self-etch system application ( < 0.05).
The shear bond strength of a self-etch system might vary according to the operator's experience.
在牙本质上应用粘结系统是一个多步骤、对技术要求较高的过程。因此，本研究旨在评估操作者经验对酸蚀冲洗粘结系统和自酸蚀粘结系统与牙本质之间剪切粘结强度的影响。
本研究使用了48颗拔除的人磨牙。将牙根截断后嵌入丙烯酸树脂中。去除牙齿近中及远中面的釉质以暴露牙本质表面。样本被分为四组（每组n = 12）：第1组：有13年经验的口腔修复专科医生；第2组：有6年经验；第3组：有2年经验的研究生操作者；第4组：有1年经验且熟悉粘结系统的本科生。每位操作者在近中面应用一种酸蚀冲洗粘结系统（Adper Single Bond 2），在远中面应用一种自酸蚀粘结系统（Clearfil SE Bond）（每组n = 12）。然后，借助塑料环（2 mm×2 mm）填入复合树脂（Filtek Z250）并光固化。在进行剪切粘结强度测试前，将标本储存在蒸馏水中。采用双向方差分析进行统计学分析。
对于酸蚀冲洗粘结系统，不同操作者类型之间未发现统计学上的显著差异（P > 0.05）；然而，在自酸蚀系统的应用方面，本科生的表现优于有2年经验的操作者（P < 0.05）。
自酸蚀系统的剪切粘结强度可能因操作者的经验而有所不同。
