Terni Prachiti M, Nadgere Jyoti B, Ram Sabita M, Shah Naisargi P, Mahadevan Janani
Department of Prosthodontics, MGM Dental College and Hospital, Navi Mumbai, Maharashtra, India.
Department of Prosthodontics, Terna Dental College, Navi Mumbai, Maharashtra, India.
J Indian Prosthodont Soc. 2019 Jul-Sep;19(3):255-260. doi: 10.4103/jips.jips_84_19.
The aim of the study was to evaluate the shear bond strength of adhesive and self-adhesive resin luting agents (RLAs) to three commercially available composite core build-up materials (CBMs).
Comparative - study.
Sixty samples, 20 each of self-cure (Incore, Medicept: Group I), light cure (Light-Core, Bisco: Group II), and dual cure (LuxaCore Z-Dual, DMG America: Group III) composite CBMs were made in the lower mold space of a customized stainless steel jig. They were further subdivided into subgroups A and B for bonding with the adhesive (RelyX Ultimate, 3M ESPE) and self-adhesive (RelyX Unicem, 3M ESPE) RLAs respectively. For specimens in subgroup A, the bonding agent (Scotchbond Universal Adhesive, 3M ESPE) was rubbed onto the surface for 20 s prior to bonding with the adhesive RLA. For specimens in subgroup B, no pretreatment of the surface was carried out. The CBM-luting agent sample was tested for the shear bond strength in a universal testing machine.
ANOVA, Tukey's multiple comparison, and independent -test.
Adhesive RLA showed the highest shear bond strength to light cured composite CBM. Self-adhesive RLA showed the highest shear bond strength to dual-cured composite CBM. Adhesive RLA showed higher shear bond strength to all three composite CBMs as compared to the self-adhesive luting agent. This difference was statistically significant for the self-cure and light cure composite CBMs.
Adhesive RLA showed greater shear bond strengths to all the three groups of composite CBMs as compared to self-adhesive RLA.
本研究旨在评估粘结性树脂粘结剂和自粘结性树脂粘结剂(RLAs)与三种市售复合树脂核材料(CBMs)的剪切粘结强度。
对比研究。
在定制的不锈钢夹具的下模腔中制作60个样本,自固化(Incore,Medicept:第一组)、光固化(Light-Core,Bisco:第二组)和双重固化(LuxaCore Z-Dual,DMG America:第三组)复合树脂CBM各20个。它们进一步细分为A组和B组,分别与粘结性(RelyX Ultimate,3M ESPE)和自粘结性(RelyX Unicem,3M ESPE)RLAs粘结。对于A组样本,在与粘结性RLA粘结之前,将粘结剂(Scotchbond Universal Adhesive,3M ESPE)涂擦在表面20秒。对于B组样本,未进行表面预处理。在万能试验机上测试CBM-粘结剂样本的剪切粘结强度。
方差分析、Tukey多重比较和独立检验。
粘结性RLA对光固化复合树脂CBM的剪切粘结强度最高。自粘结性RLA对双重固化复合树脂CBM的剪切粘结强度最高。与自粘结性粘结剂相比,粘结性RLA对所有三种复合树脂CBM的剪切粘结强度更高。这种差异在自固化和光固化复合树脂CBM中具有统计学意义。
与自粘结性RLA相比,粘结性RLA对所有三组复合树脂CBM的剪切粘结强度更高。