de Trey E, Lutz F
SSO Schweiz Monatsschr Zahnheilkd. 1977 Aug;87(8):694-704.
The influence of the cavity preparation form, enamel conditioning, and application of a low viscosity sealer upon marginal adaptation and microleakage of anterior teeth proximal composite restorations was investigated in vivo. Restorations inserted using the principles of Adhesive Restoration showed the best results. Experimental adhesive fillings placed into minimally prepared saucer-shaped cavities with no macroscopic dentin retention demonstrated likewise satisfactory results because of their small volume. Definitely inferior marginal adaptation and increased microleakage were obtained with other restorative techniques. Trace areas of etched enamel could be observed after 16 months in those cases where enamel conditioning was not followed by a sealer application. The utilization of a sealer, therefore, improves not only the marginal adaptation of the composite material but in addition offers a protective seal to the previously conditioned enamel surface. Once the adhesive restoration is completed, it is recommended that a fluoride solution be applied to all enamel surfaces in the operational field. This fluoride treatment results in the formation of extremely high concentrations of fluorapatite in enamel areas which might have been inadvertently exposed to etching solutions during the procedure and not sealed or covered by composite material.
在体内研究了窝洞预备形式、牙釉质预处理以及低粘度封闭剂的应用对前牙邻面复合树脂修复体边缘适合性和微渗漏的影响。采用粘结修复原则进行的修复显示出最佳效果。将实验性粘结充填材料置于预备量最小的碟形窝洞中，且无肉眼可见的牙本质残留，由于其体积小，同样显示出令人满意的结果。采用其他修复技术时，边缘适合性明显较差，微渗漏增加。在未使用封闭剂进行牙釉质预处理的病例中，16个月后可观察到蚀刻牙釉质的痕迹区域。因此，使用封闭剂不仅可以改善复合材料的边缘适合性，还能为先前预处理的牙釉质表面提供保护密封。一旦完成粘结修复，建议在术区所有牙釉质表面应用氟溶液。这种氟处理会在牙釉质区域形成极高浓度的氟磷灰石，这些区域在操作过程中可能无意中暴露于蚀刻溶液中，且未被复合材料密封或覆盖。
