The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory for Oral Biomedicine Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan, China.
Eur J Oral Sci. 2021 Apr;129(2):e12772. doi: 10.1111/eos.12772.
This study aimed to investigate the effect of universal adhesive and silane pretreatment on the bond durability of metal brackets to dental glass ceramics. Eighty lithium disilicate glass ceramic specimens were randomly assigned to one of four groups (n = 20) defined by the pretreatment and adhesive used: (i) Adper Single Bond 2; (ii) silane + Adper Single Bond 2; (iii) Single Bond Universal; and (iv) silane +Single Bond Universal. Maxillary central incisor metal brackets were bonded on the ceramic surfaces with resin composite. A shear bond strength test was conducted after 24 h of water storage and after 10,000 thermocycles. Adhesive remnant index scoring and field-emission scanning electron microscopy were performed to determine adhesives remaining on the ceramic surfaces and the ceramic ultrastructure following bracket debonding, respectively. After 10,000 thermocycles, specimens treated with Single Bond Universal preserved an appropriate bond strength between brackets and glass ceramics and showed minimum ceramic surface damage following bracket debonding, which was not the case in the other three groups. The application of a silane-containing universal adhesive without silane pretreatment achieves adequate durability of the bond of metal brackets to dental glass ceramics and allows safe debonding, which may aid in optimizing the effectiveness for orthodontic treatment.
本研究旨在探讨通用粘结剂和硅烷预处理对金属托槽与牙科玻璃陶瓷粘结耐久性的影响。将 80 个锂硅玻璃陶瓷样本随机分为四组（n=20），根据使用的预处理剂和粘结剂进行定义：（i）Adper Single Bond 2；（ii）硅烷+Adper Single Bond 2；（iii）Single Bond Universal；和（iv）硅烷+Single Bond Universal。上颌中切牙金属托槽用树脂复合材料粘结在陶瓷表面。水储存 24 小时后和 10,000 次热循环后进行剪切粘结强度测试。使用粘结残余指数评分和场发射扫描电子显微镜分别确定在托槽脱落后残留在陶瓷表面上的粘结剂和陶瓷超微结构。经过 10,000 次热循环后，用 Single Bond Universal 处理的样本在托槽和玻璃陶瓷之间保持了适当的粘结强度，并且在托槽脱落后显示出最小的陶瓷表面损伤，而其他三组则不是这样。应用含有硅烷的通用粘结剂而不进行硅烷预处理，可以实现金属托槽与牙科玻璃陶瓷的粘结耐久性，并可以安全地进行脱粘，这可能有助于优化正畸治疗的效果。
