Krawczyk-Stuss Małgorzata, Nowak Joanna, Bołtacz-Rzepkowska Elżbieta
Department of Conservative Dentistry, Chair of Conservative Dentistry and Endodontics, Faculty of Medicine with the Division of Dentistry, Medical University of Lodz, Poland.
Academic Materials Testing Laboratory, Medical University of Lodz, Poland.
Dent Med Probl. 2019 Jan-Mar;56(1):39-44. doi: 10.17219/dmp/103589.
Biodentine® is a bioactive calcium silicate-based material, with better strength parameters, an easier application method and a shorter setting time than mineral trioxide aggregate (MTA). The bond strength between Biodentine and the composite material is essential for the durability of the layered restoration.
The objective of this study was to evaluate the bond strength of Biodentine to a resin-based composite at various acid etching times and with different adhesive strategies.
In the 1st part of the experiment, the specimens were divided into 2 groups: the adhesive was applied in the total-etch (TE) and self-etch (SE) techniques. In the TE group, 37% orthophosphoric acid was applied after 30 s (TE 30) and 240 s (TE 240). In the SE group, the SE system was applied for 30 s (SE 30) and 240 s (SE 240). In the 2nd part, the SE systems Clearfil® SE Bond and Clearfil S3 Bond Plus were evaluated (the CSE and CS3 groups, respectively). In each group, the adhesive system was applied in 1 (the CSE 1 and CS3 1 subgroups) or 2 layers (the CSE 2 and CS3 2 subgroups). The specimens were subjected to a shear bond strength (SBS) test in a universal testing machine.
Shear bond strength was higher after a prolonged etching procedure in the TE (TE 30: 2.51 MPa, TE 240: 9.39 MPa) and SE techniques (SE 30: 5.92 MPa, SE 240: 7.89 MPa). A statistically significant influence was detected in relation to 30 s of surface preparation time for Clearfil S3 Bond Plus (p < 0.001). Greater bond strength was revealed after the application of 1 layer of the Clearfil S3 Bond Plus single-bottle system (CS3 1: 6.42 MPa).
The SBS of Biodentine to the composite depends on both the etching time and the mode of application of the adhesive systems. Higher bond strength was obtained for the SE adhesive in a shorter application time.
生物陶瓷（Biodentine®）是一种基于生物活性硅酸钙的材料，与矿物三氧化物凝聚体（MTA）相比，具有更好的强度参数、更简便的应用方法和更短的凝固时间。生物陶瓷与复合材料之间的粘结强度对于分层修复体的耐久性至关重要。
本研究的目的是评估在不同酸蚀时间和不同粘结策略下，生物陶瓷与树脂基复合材料之间的粘结强度。
在实验的第一部分，将标本分为2组：采用全酸蚀（TE）和自酸蚀（SE）技术应用粘结剂。在TE组中，分别在30秒（TE 30）和240秒（TE 240）后应用37%的正磷酸。在SE组中，分别将SE系统应用30秒（SE 30）和240秒（SE 240）。在第二部分，评估了Clearfil® SE Bond和Clearfil S3 Bond Plus这两种SE系统（分别为CSE组和CS3组）。在每组中，粘结剂系统以1层（CSE 1和CS3 1亚组）或2层（CSE 2和CS3 2亚组）的方式应用。在万能试验机上对标本进行剪切粘结强度（SBS）测试。
在TE（TE 30：2.51MPa，TE 240：9.39MPa）和SE技术（SE 30：5.92MPa，SE 240：7.89MPa）中，经过较长时间的酸蚀程序后，剪切粘结强度更高。对于Clearfil S3 Bond Plus，在表面处理30秒时检测到有统计学意义的影响（p < 0.001）。应用1层Clearfil S3 Bond Plus单瓶系统后显示出更高的粘结强度（CS3 1：6.42MPa）。
生物陶瓷与复合材料的SBS取决于酸蚀时间和粘结剂系统的应用方式。在较短的应用时间内，SE粘结剂获得了更高的粘结强度。
