de Trey E, Lutz F
SSO Schweiz Monatsschr Zahnheilkd. 1977 Aug;87(8):737-51.
The influence of different cavity preparation and the use of a low viscosity sealant on the marginal adaptation and microleakage of class III composite restorations was investigated in a dye penetration and a SEM-study in vivo. In 9 subjects with 4 restorations each, different forms of dentin cavities and enamel preparations were performed. In 3 out of 4 cavity types a low viscosity sealant was applied prior to the insertion of the composite material. Replicas of the restorations after 30 min, 15 and 120 days were examined by SEM (magnification 400X). Marginal areas 1 h, 15 and 120 days after restoration placement were coated with a fluorescent permeating dye, flushed with water, dried and photographed under UV-light. The micromorphological and in vivo permeation investigations have demonstrated that restorations with no marginal leakage and with perfect marginal adaptation could be achieved when using a sealant composite system with a new cavity design, the "adhesive preparation". Furthermore the retentive strength of the "adhesive restoration" which has no macroscopic dentinal retention was largely sufficient.
通过体内染料渗透和扫描电子显微镜（SEM）研究，探讨了不同窝洞预备方式及使用低粘度封闭剂对Ⅲ类复合树脂修复体边缘适合性和微渗漏的影响。在9名受试者中，每人制备4个修复体，进行不同形式的牙本质窝洞和釉质预备。在4种窝洞类型中的3种，在复合树脂材料充填前应用低粘度封闭剂。修复体在30分钟、15天和120天后的复制品用扫描电子显微镜（放大倍数400倍）检查。修复体就位后1小时、15天和120天的边缘区域用荧光渗透染料涂布，用水冲洗，干燥后在紫外光下拍照。微观形态学和体内渗透研究表明，采用新的窝洞设计“粘结性预备”的封闭剂复合树脂系统时，可实现无边缘渗漏且边缘适合性完美的修复体。此外，无宏观牙本质固位的“粘结性修复体”的固位强度也基本足够。
