Oper Dent. 2020 Nov 1;45(6):664-676. doi: 10.2341/19-141-L.
When a resin nanoceramic inlay is cemented using self-adhesive cement, a universal dentin adhesive can be applied to the prepared cavity. The application of the adhesive before self-adhesive cement placement provides similar or better interfacial adaptation than without the adhesive.
Purpose: The first objective of this study was to determine whether the luting material used for computer-aided design and computer-aided manufacture resin nanoceramic inlays affected interfacial adaptation. The second objective was to investigate whether application of a universal dentin adhesive before cementation affected interfacial adaptation. The final objective was to compare the inlay-side and dentin-side interfaces in the cement space.Methods and Materials: Seventy-four class I cavities were prepared on extracted human third molars. Cavities were optically scanned, and resin nanoceramic inlays were milled using Lava Ultimate blocks (3M ESPE). For the control groups, the fabricated inlays were cemented using Panavia V5 (Kuraray Noritake) or FujiCem 2 (GC). For the experimental groups, the teeth were randomly divided into groups I and II. Group I contained four subgroups using different luting materials; in all subgroups, the inlays were cemented and dual cured without pretreatment. Group II contained six subgroups in which inlays were cemented and dual cured after application of a universal dentin adhesive. After thermocycling, interfacial adaptation was measured using swept-source optical coherence tomography (SS-OCT) imaging and statistically compared among groups.Results: Interfacial adaptation was different depending on the luting material used (p<0.05). After application of a universal adhesive, some subgroups showed improved interfacial adaptation (p<0.05). In the comparison of inlay-side and dentin-side interfaces, no difference was found in interfacial adaptation (p>0.05).Conclusions: Interfacial adaptation for resin nanoceramic inlays differed with luting material. For some self-adhesive cements, application of a universal adhesive before cementation improved interfacial adaptation.
当使用自粘水泥粘结树脂纳米陶瓷嵌体时，可以将通用牙本质粘结剂应用于预备好的窝洞。在放置自粘水泥之前应用粘结剂可提供与不使用粘结剂相似或更好的界面适应性。
目的：本研究的首要目的是确定用于计算机辅助设计和计算机辅助制造的树脂纳米陶瓷嵌体的粘结材料是否会影响界面适应性。第二个目的是研究在粘结前应用通用牙本质粘结剂是否会影响界面适应性。最终目的是比较粘结剂空间中的嵌体侧和牙本质侧界面。
在 74 个人类第三磨牙的离体牙上制备 74 个 I 类洞。使用 Lava Ultimate 块（3M ESPE）对腔进行光学扫描并铣削树脂纳米陶瓷嵌体。对于对照组，使用 Panavia V5（Kuraray Noritake）或 FujiCem 2（GC）粘结预制嵌体。对于实验组，牙齿随机分为 I 组和 II 组。I 组分为 4 个亚组，使用不同的粘结材料；在所有亚组中，不预处理直接将嵌体粘结并双重固化。II 组分为 6 个亚组，其中在应用通用牙本质粘结剂后将嵌体粘结并双重固化。热循环后，使用扫频源光学相干断层扫描（SS-OCT）成像测量界面适应性，并在组间进行统计学比较。
界面适应性取决于使用的粘结材料（p<0.05）。应用通用粘结剂后，一些亚组显示出改善的界面适应性（p<0.05）。在嵌体侧和牙本质侧界面的比较中，界面适应性无差异（p>0.05）。
树脂纳米陶瓷嵌体的界面适应性因粘结材料而异。对于一些自粘水泥，在粘结前应用通用粘结剂可改善界面适应性。
