AN IN VIVO EVALUATION OF TWO SELF-ETCHING RESIN COMPOSITE BONDING AGENTS

该子项目是利用NIH/NCRR资助的中心赠款提供的资源的许多研究子项目之一。子项目和研究者（PI）可能从另一个NIH来源获得主要资金，因此可以在其他CRISP条目中表示。所列机构为中心，不一定是研究者所在机构。病变位于牙龈边缘的牙齿通常分为龋和非龋。龋损的病因是细菌性的，而非龋损的病因是多因素的，范围从咬合性（脱落性病变）到刷牙（磨损）到化学性（侵蚀）。几种材料用于修复这些病变：复合树脂;常规和树脂改性的玻璃离聚物;和复合物。在美国，复合树脂修复体是用于这种情况的主要修复材料。由于复合树脂不具有粘性，因此必须使用粘结剂将其粘结到牙齿结构上。有几种粘合剂可用。本研究将比较两种粘合系统：全蚀刻和新型自蚀刻粘合剂在三年内的临床有效性。

This subproject is one of many research subprojects utilizing the resources provided by a Center grant funded by NIH/NCRR. The subproject and investigator (PI) may have received primary funding from another NIH source, and thus could be represented in other CRISP entries. The institution listed is for the Center, which is not necessarily the institution for the investigator. Lesions located at the gingival margin of teeth are generally classified into carious and non-carious. Carious lesions have a bacterial etiology while the etiology of the non-carious lesion is multifactorial and ranges from occlusial (abfraction lesions) to tooth brushing (abrasion) to chemical (erosion). Several materials are used to restore these lesions: composite resins; conventional and resin modified glass ionomers; and compomers. In the United States, composite resin restorative are the primary restorative material used in this situation. Since composite resins are not adhesive, they must be bonded to tooth structure with bonding agents. Several bonding agents are available. This investigation will compare two bonding systems: a total etch and a newer self-etching bonding agent for their clinical effectiveness over a three year period.