粘结水门汀及预备体聚合角度对氧化锆修复体内部适合性的影响。
Effect of Luting Cement and Convergence Angle of the Preparation on the Internal Fit of Zirconia Restorations.
作者信息
Sánchez-Monescillo Andrés, González-Serrano Carlos, González-Serrano José, Malta Barbosa João, López-Suárez Carlos, Duarte Sillas
机构信息
Norris Dental Science Center, Division of Restorative Sciences, Herman Ostrow School of Dentistry, University of Southern California, 925 W 34th St, DEN 311, Los Angeles, CA 90089, USA.
IDIBO Research Group, Stomatology Department, School of Health Sciences, Rey Juan Carlos University, Av. de Atenas, S/N, Alcorcón, 28922 Madrid, Spain.
出版信息
Materials (Basel). 2021 Dec 18;14(24):7858. doi: 10.3390/ma14247858.
The objective was to evaluate the effect of luting agents and the preparation design on the internal fit of zirconia restorations. Sixty dies were prepared and divided in occlusal convergence angle of 6° (OC6) and 12° (OC12). CAD/CAM zirconia copings were fabricated (Lava All-Ceramic System). A zinc phosphate cement (ZPC); a glass ionomer cement (GIC); and a resin cement (RC) were studied. Specimens were sectioned and coping/die discrepancies were evaluated through Stereoscopic Microscopy. A closer fit was observed in OC12 when compared to OC6 ( < 0.001). For OC6 no significant differences were observed in between ZPC, GIC, and RC ( > 0.05). For OC12, a significantly closer fit was recorded on the ZPC subgroup when compared to the GIC subgroup ( < 0.001). Preparations of 12 degrees demonstrated a closer internal fit when compared to 6 degrees. Preparations of 12 degrees achieved better internal fit values with ZPC (Fortex) followed by RC (RelyX Unicem), and GIC (Ketac Cem). No differences were found when comparing different luting agents over 6° degrees preparations.
目的是评估粘结剂和预备设计对氧化锆修复体内部适合性的影响。制备了60个代型，并根据6°（OC6）和12°（OC12）的咬合聚合角进行分组。制作了CAD/CAM氧化锆基底冠（Lava全瓷系统）。研究了磷酸锌水门汀（ZPC）、玻璃离子水门汀（GIC）和树脂水门汀（RC）。将样本切片，并通过立体显微镜评估基底冠/代型的差异。与OC6相比，OC12的适合性更紧密（<0.001）。对于OC6，ZPC、GIC和RC之间未观察到显著差异（>0.05）。对于OC12，与GIC亚组相比，ZPC亚组的适合性显著更紧密（<0.001）。与6°相比，12°的预备体显示出更紧密的内部适合性。12°的预备体使用ZPC（Fortex）时内部适合性最佳，其次是RC（RelyX Unicem）和GIC（Ketac Cem）。在比较6°预备体上不同粘结剂时未发现差异。
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