热循环对聚醚醚酮剪切粘结强度的影响：树脂粘结水门汀的比较研究：一项体外研究
Effect of Thermocycling on Shear Bond Strength of PEEK-A Comparative Study of Resin Luting Cements: An In-Vitro Study.
作者信息
Thapaswini Yekula, Chary Nukalamarri O B P, Pardeshi Kshitij V, Chitumalla Rajkiran, Cherukuri Sai A
机构信息
Department of Prosthodontics, Sri Sai College of Dental Surgery, Vikarabad, Telangana, India.
Department of Prosthodontics, Meghana Institute of Dental Sciences, Nizamabad, Telangana, India.
出版信息
J Pharm Bioallied Sci. 2022 Jul;14(Suppl 1):S679-S682. doi: 10.4103/jpbs.jpbs_119_22. Epub 2022 Jul 13.
INTRODUCTION
Thermocycling is an process; it may affect the bonding strength between tooth and resin which is depending upon the adhesive system.
AIM AND OBJECTIVES
To evaluate and compare the thermocycling effect on shear bond strength of RelyX Unicem and G-CEM Linkace to polyether ether ketone (PEEK) surface.
MATERIALS AND METHODS
A total of 40 PEEK disk-shaped specimens were fabricated with dimensions of 10 × 3 mm and randomly allocated into two groups. Group A was cemented with Rely X Unicem material and Group B was cemented with G-CEM Linkace. About 10 specimens from each group were thermocycled 500 times at 5°C and 55°C. By applying force at the speed of 1 mm/min using a universal testing machine, shear bond strength was measured.
RESULTS
The mean bond strength was compared using paired test. There was a significant difference even before and after thermocycling.
CONCLUSION
In this experiment, Shear bond strength (SBS) of G-CEM Linkace showed more even before and after thermocycling when compared to RelyX. Also bond strengths of two cements decreased after thermocycling.
引言
热循环是一个过程；它可能会影响牙齿与树脂之间的粘结强度，而这取决于粘结系统。
目的
评估并比较热循环对RelyX Unicem和G-CEM Linkace与聚醚醚酮（PEEK）表面之间剪切粘结强度的影响。
材料与方法
共制作40个尺寸为10×3 mm的PEEK圆盘形试件，并随机分为两组。A组用Rely X Unicem材料粘结，B组用G-CEM Linkace粘结。每组约10个试件在5°C和55°C下进行500次热循环。使用万能试验机以1 mm/min的速度施加力，测量剪切粘结强度。
结果
使用配对检验比较平均粘结强度。热循环前后均存在显著差异。
结论
在本实验中，与RelyX相比，G-CEM Linkace的剪切粘结强度（SBS）在热循环前后表现得更为均匀。而且两种粘结剂的粘结强度在热循环后均有所下降。
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