Smith D C, Maijer R
Am J Orthod. 1983 Apr;83(4):277-81. doi: 10.1016/0002-9416(83)90222-1.
Acid etch bonding of orthodontic attachments to the labial and lingual surfaces of teeth is generally adequate for clinical service. Failures do occur, and these are related to technique problems in acid etching or resin manipulation or to bracket base design. The widely used foil mesh base can present problems in retention because of design defects or corrosion. Improvement in mechanical retention of resin to the attachment base would result in significant improvements in bonding and fewer clinical failures. One of our approaches to improved retention is to fuse metallic or ceramic particles onto the bracket base so as to achieve a particulate or porous layer into which resin can penetrate. The results of bond-strength tests showed that a 100 percent increase in bond strength could be obtained with sintered porous metal-coated brackets. Further development is proceeding.
正畸附件与牙齿唇面和舌面的酸蚀粘结在临床应用中通常是足够的。但确实会出现粘结失败的情况，这些与酸蚀或树脂操作中的技术问题或托槽基底设计有关。广泛使用的箔网基底由于设计缺陷或腐蚀可能会出现固位问题。改善树脂与附件基底的机械固位将显著提高粘结效果并减少临床失败案例。我们提高固位的方法之一是将金属或陶瓷颗粒熔合到托槽基底上，从而形成树脂能够渗入的颗粒状或多孔层。粘结强度测试结果表明，烧结多孔金属涂层托槽的粘结强度可提高100%。进一步的研发正在进行中。
