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首页> 外文期刊>Journal of Dental Materials and Techniques >The evaluation and comparison of marginal adaptation in metal ceramic and all ceramic restorations fabricated by two methods: CAD/CAM and conventional
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The evaluation and comparison of marginal adaptation in metal ceramic and all ceramic restorations fabricated by two methods: CAD/CAM and conventional

机译：通过两种方法对金属陶瓷和所有陶瓷修复体的边缘适应性进行评估和比较：CAD / CAM和常规

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Introduction: Marginal fit is a key factor for long term clinical success through any dental restorations. Poor marginal adaptation causes cement dissolution. This can lead to dental caries, gingival irritation, periodontal diseases, and finally treatment failure. The aim of this study was measurement and comparison of marginal gap quantities in metal ceramic and all ceramic dental restorations fabricated by various methods. Methods & Materials: A total of 60 complete crowns in 6 groups (n=10) were fabricated as. Follows: Group A: Conventional metal-ceramic collarless restorations. Group B: Metal-ceramic collarless restorations with CAD/CAM wax copings and porcelain layering. Group C: Metal-ceramic collarless restorations with Ceramill Sintron metal copings and porcelain layering. Group D: All ceramic e-max. Press (lithium disilicate) restorations. Group E: All ceramic restorations with CAD/CAM zirconia copings and porcelain layering. Group F: All ceramic CAD/CAM translucent zirconia (Zolid). Replica technique and optical microscope (60 x magnifications) used to gap measurement. Mann whitney and kruskal-wallis tests used to analyze the data. Results: The lowest mean marginal gap seen in group C (29.12) and the highest mean marginal gap seen in group E(78.19)The mean marginal adaptation was better in metal ceramic restorations than all ceramic restorations and the difference was significant (P?0.001). Conclusion: According to our study, marginal gap of metal ceramic and all ceramic restorations was clinically acceptable (less than 120 microns).
机译：简介：边缘配合是通过任何牙齿修复物取得长期临床成功的关键因素。边缘适应性差会导致水泥溶解。这可能导致龋齿，牙龈刺激，牙周疾病，最终导致治疗失败。这项研究的目的是测量和比较通过各种方法制造的金属陶瓷和所有陶瓷牙齿修复物中的边缘间隙量。方法与材料：总共制作了6组（n = 10）的60个完整牙冠。遵循：A组：常规的金属陶瓷无领修复体。 B组：金属陶瓷无领修复体，带有CAD / CAM蜡涂层和瓷层。 C组：具有Ceramill Sintron金属顶盖和瓷层的金属陶瓷无领修复体。 D组：所有陶瓷e-max。压制（二硅酸锂）修复体。 E组：所有具有CAD / CAM氧化锆顶盖和瓷层的陶瓷修复体。 F组：所有陶瓷CAD / CAM半透明氧化锆（Zolid）。复制技术和光学显微镜（60倍放大率）用于间隙测量。曼恩·惠特尼（Mann whitney）和kruskal-wallis检验用于分析数据。结果：C组的平均边缘间隙最低（29.12），E组的平均边缘间隙最高（78.19）。金属陶瓷修复体的平均边缘适应性优于所有陶瓷修复体，差异显着（P <0.001） ）。结论：根据我们的研究，金属陶瓷和所有陶瓷修复体的边缘间隙在临床上可以接受（小于120微米）。

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