Rule D C
Dent J Malays. 1985 Apr;8(2):9-12.
During the 30 years that have elapsed since the original report by Buonocore (1955), which demonstrated the increased retention of acrylic resins to an acid-etched enamel surface, the development of composite restorative materials in particular has enabled the clinician to offer a wider range of treatment alternatives to patients who present initially with problems directly related to their anterior teeth. Whilst the problem may be immediately apparent when the teeth erupt, professional advice is most often sought during adolescence. The provision of crowns for patients in this age group is contraindicated for many reasons, including compliance with extensive restorative procedures, large pulp cavities with the possibility of traumatic exposure during tooth preparation and inadequate crown height associated with an immature gingival margin.
自布奥诺科尔(1955年)最初的报告发表以来,30年已经过去了。该报告表明,丙烯酸树脂对酸蚀釉质表面的附着力有所增强。特别是复合修复材料的发展,使临床医生能够为最初出现与前牙直接相关问题的患者提供更广泛的治疗选择。虽然牙齿萌出时问题可能立即显现,但大多数情况下是在青春期寻求专业建议。出于多种原因,该年龄组患者禁忌使用牙冠,包括难以配合广泛的修复程序、牙髓腔大,在备牙过程中可能发生意外暴露以及牙龈边缘未成熟导致牙冠高度不足。