Székely M, Bocskay I
Orvosi és Gyógyszerészeti Egyetem, Fogorvosi Kar, Fogászati Propedeutika és Anyagtan Tanszék.
Fogorv Sz. 1999 Jun;92(6):186-90.
The aim of the present in vitro study was to evaluate the marginal gap formation of composite restorations. Class V. cavities were prepared on the buccal surfaces of 30 human teeth and restored with Prime & Bond 2.1 (Spectrum TPH and Syntac Single-Component) Tetric. The specimens were examined by scanning electron microscope (SEM). By measurement of marginal gap dimensions this study aimed at comparing the marginal fitting and bonding potentials of current generation composite resins and adhesive systems. The data were analyzed by a two-sample t-test. No significant differences were detected (p < 0.001) between the two groups. The specimens showed very narrow gaps of 0-5 microns thickness and 60% of the composite fillings presented gap-free attachment to enamel. These results may have significant implications related to clinical longevity of composite restorations.
本项体外研究的目的是评估复合树脂修复体的边缘间隙形成情况。在30颗人牙的颊面制备V类洞，并用Prime & Bond 2.1（Spectrum TPH和Syntac单组分）Tetric进行修复。通过扫描电子显微镜（SEM）对标本进行检查。通过测量边缘间隙尺寸，本研究旨在比较当代复合树脂和粘结系统的边缘密合性和粘结潜力。数据采用两样本t检验进行分析。两组之间未检测到显著差异（p < 0.001）。标本显示出厚度为0 - 5微米的非常窄的间隙，60%的复合树脂充填物与牙釉质呈现无间隙附着。这些结果可能对复合树脂修复体的临床寿命具有重要意义。
