Hovav S, Holan G, Lewinstein I, Fuks A B
The Hebrew University, Hadassah Faculty of Dental Medicine, Department of Pediatric Dentistry, Jerusalem, Israel.
Oper Dent. 1995 Mar-Apr;20(2):63-7.
The purposes of the present study were: 1) to assess the microleakage at the cervical margin of Superbond-lined composite restorations with and without a cervical amalgam base and compare the results to cervical margins of composite restorations lined with Scotchbond 2, and 2) to compare the quality of the occlusal margins of Superbond-lined P-50 restorations with those bonded with Scotchbond 2. Forty-eight class 2 cavities were prepared in extracted or exfoliated primary molars. The teeth were randomly divided into three groups and restored as follows: Group A, amalgam + Superbond + P-50 (sandwich); Group B, Superbond + P-50; Group C, Scotchbond 2 + P-50 (control). Marginal leakage was assessed by the degree of dye penetration on sections of the restored teeth. The occlusal margins presented no or minimal leakage (degrees 0 and 1) in 53% of Group A restorations, 60% of Group B, and 44% of Group C. These differences were not statistically significant (P<0.05). The cervical margins showed moderate to severe dye penetration (degrees 2 and 3) in 94% of Group A, 47% of Group B, and 87% of Group C. These differences were statistically significant (P<0.05). The amalgam/Superbond/composite interface exhibited no leakage in 70% of the restorations. Although marginal leakage was not completely eliminated, Superbond exhibited significantly less leakage (P<0.05) at the cervical margins than Scotchbond 2 or amalgam with Superbond.
1）评估有或没有颈部汞合金基底的Superbond衬层复合树脂修复体颈部边缘的微渗漏情况，并将结果与Scotchbond 2衬层复合树脂修复体的颈部边缘进行比较；2）比较Superbond衬层P-50修复体与用Scotchbond 2粘结的修复体的咬合边缘质量。在拔除或脱落的乳牙上制备了48个二类洞。将牙齿随机分为三组并进行如下修复：A组，汞合金+Superbond+P-50（三明治式）；B组，Superbond+P-50；C组，Scotchbond 2+P-50（对照组）。通过修复牙齿切片上的染料渗透程度评估边缘渗漏情况。A组修复体中53%、B组60%、C组44%的咬合边缘无渗漏或渗漏极小（0级和1级）。这些差异无统计学意义（P<0.05）。A组94%、B组47%、C组87%的颈部边缘显示中度至重度染料渗透（2级和3级）。这些差异有统计学意义（P<0.05）。70%的修复体中汞合金/Superbond/复合树脂界面无渗漏。尽管边缘渗漏未完全消除，但Superbond在颈部边缘的渗漏明显少于Scotchbond 2或Superbond与汞合金联合使用的情况（P<0.05）。
