Peutzfeldt A, Asmussen E
Københavns Tandloegehøjskoles Institut for Odontologisk Materialeloere og Teknologi.
Tandlaegebladet. 1991 Apr;95(6):243-6.
The accuracy (fit) of MOD inlays of three brands of composite resin was determined by measuring the axial discrepancy (marginal opening in the approximal area). The axial discrepancy varied between 17 and 121 microns. Directly manufactured inlays were more accurate (axial discrepancy: 17-26 microns) than indirectly manufactured inlays (axial discrepancy: 40-121 microns). Inlays of a microfilled resin, SR-Isosit, were less accurate than inlays of two hybrid materials, Brilliant Dentin and Estilux posterior C VS (axial discrepancy: 121 microns vs 44 and 41 microns respectively). There was a tendency for 24-hour-old inlays to be less accurate than 10-min-old inlays. The formation of marginal gaps due to contraction of the resin cement was assessed in a light microscope on cemented single-surfaced inlays. Gaps were not formed when enamel margins were etched or dentin margins treated with a dentin-bonding agent of high efficacy. Gaps (2.4-5.6 microns) were formed, however, at untreated dentin margins and at margins treated with dentin-bonding agents of low efficacy.
通过测量轴向差异（邻面区域的边缘开口）来确定三种复合树脂品牌的MOD嵌体的精度（贴合度）。轴向差异在17至121微米之间变化。直接制作的嵌体比间接制作的嵌体更精确（轴向差异：17 - 26微米对比40 - 121微米）。一种微填料树脂SR-Isosit的嵌体不如两种混合材料Brilliant Dentin和Estilux posterior C VS的嵌体精确（轴向差异分别为121微米对比44和41微米）。24小时龄的嵌体有比10分钟龄的嵌体精度更低的趋势。在光学显微镜下对粘结的单面嵌体评估因树脂粘结剂收缩导致的边缘间隙形成情况。当釉质边缘酸蚀或牙本质边缘用高效能牙本质粘结剂处理时不会形成间隙。然而，在未处理的牙本质边缘以及用低效能牙本质粘结剂处理的边缘会形成间隙（2.4 - 5.6微米）。
