Schwartz J L, Anderson M H, Pelleu G B
National Naval Dental Center, Bethesda, MD.
Oper Dent. 1990 Sep-Oct;15(5):186-92.
The effect on microleakage of two glass-ionomer/resin "sandwich" restorations and an incrementally placed microfilled resin restoration was tested in class 5 preparations extending apical to the cementoenamel junction. There was significantly less leakage detected in the sandwich restorations with microfilled resin placed in one or two increments. These results indicate that a glass-ionomer/microfilled resin sandwich restoration may significantly reduce microleakage in restorations extending below the cementoenamel junction.
在延伸至牙骨质釉质界根尖方向的Ⅴ类洞型中，测试了两种玻璃离子体/树脂“三明治”修复体和逐层放置的微填料树脂修复体对微渗漏的影响。在采用逐层放置一次或两次微填料树脂的三明治修复体中，检测到的渗漏明显较少。这些结果表明，玻璃离子体/微填料树脂三明治修复体可能显著减少延伸至牙骨质釉质界下方的修复体中的微渗漏。
