Vanherle G, Lambrechts P, Braem M
Catholic University of Leuven, Faculty of Dentistry, Belgium.
J Prosthet Dent. 1991 Mar;65(3):341-7. doi: 10.1016/0022-3913(91)90222-i.
The restoration of 457 cervical lesions was completed with three different bonding agents. All restorations were divided into two categories. In group A the incisal enamel was neither bevelled nor etched. The lesion was cleaned, followed by the application of the bonding agent and the composite resin. The restorations were finished with a butt joint. In group B, after cleaning procedures, the incisal enamel of all lesions was bevelled and etched, followed by the application of the bonding agent and the composite resin. The restorations were finished to a feather edge. The results from this clinical investigation indicated a high failure rate when only dentinal bonding was involved. The group A restorations suffered from a high rate of loss after 6 months. Moreover, the rate of loss increased over subsequent months. The dentin bonding agents used in combination with micromechanical retention on the enamel border in the group B restorations, however, provided an acceptable clinical result. Not only was the percentage of lost restorations quite low after 6 months, but these bonding systems also offered a more reliable marginal adaptation compared with the enamel bond system. One may conclude that the use of a dentin bonding agent in combination with mechanical retention offers a better chance of clinical success in terms of marginal adaptation, retention, and esthetics.
使用三种不同的粘结剂完成了457例颈部病损的修复。所有修复体分为两类。A组中，切端釉质既不做斜面预备也不酸蚀。清洁病损后，应用粘结剂和复合树脂。修复体采用对接完成。B组中，清洁操作后，所有病损的切端釉质做斜面预备并酸蚀，然后应用粘结剂和复合树脂。修复体完成至羽状边缘。该临床研究结果表明，仅涉及牙本质粘结时失败率较高。A组修复体在6个月后出现较高的脱落率。此外，在随后的几个月中脱落率还在增加。然而，B组修复体中使用的牙本质粘结剂与釉质边缘的微机械固位相结合，提供了可接受的临床结果。不仅6个月后修复体脱落的百分比相当低，而且与釉质粘结系统相比，这些粘结系统还提供了更可靠的边缘适应性。可以得出结论，就边缘适应性、固位和美观而言，使用牙本质粘结剂与机械固位相结合可提供更好的临床成功机会。
