3种桩核系统全瓷冠边缘和内部适合性比较的实验研究

发布时间：2018-05-04 19:02

本文选题：桩核 + 全瓷　；参考：《口腔医学研究》2017年04期

【摘要】：目的:研究遮色钴铬合金桩核、氧化锆桩核、纤维桩树脂核三种牙色桩核系统氧化锆全瓷冠修复后冠边缘和内部适合性的差异,为临床桩核全瓷冠修复方法和材料的选择提供参考依据。方法:24颗离体上颌中切牙在釉牙骨质界冠方2.0mm处截冠,按临床操作程序和方法分别制作遮色钴铬合金桩核、氧化锆桩核、纤维桩树脂核各8个,均加二氧化锆全瓷冠修复。在100倍体视显微镜下,采用间隙印模测量法比较3组冠的边缘和内部间隙大小,应用SPSS 17.0软件对实验数据进行统计分析。结果:遮色钴铬合金桩核组、氧化锆桩核组、纤维桩树脂核组锆瓷冠的边缘间隙测量结果分别为(96.98±3.51)、(62.34±3.22)、(59.00±3.96)μm。内部间隙为(95.71±2.52)、(73.14±2.04)、(68.52±4.08)μm。遮色钴铬合金桩核组的边缘间隙及内部间隙与氧化锆桩核组、纤维桩树脂核组间差异均有统计学意义(P0.05),氧化锆桩核组与纤维桩树脂核组之间边缘及内部间隙差异均无统计学意义。结论:3种桩核方法上制作的氧化锆全瓷冠边缘适合性均在临床可接受范围内,但采用氧化锆桩核、纤维桩树脂核制得的全瓷冠其边缘适合性更接近美国牙科协会标准,更值得推广应用。
[Abstract]:Objective: to study the difference of the edge and internal fitness of the posterior crown with three kinds of chromatic cobalt-chromium alloy post core, zirconia post core, fiber post core and fiber post core, which were repaired with Zirconia all-ceramic crown. To provide the reference for the selection of the methods and materials of the post-core all-ceramic crown. Methods Twenty four maxillary central incisors were cut at 2.0mm of the enamel bone boundary crown, respectively. The shaded cobalt-chromium alloy post core, zirconia post core and fibrous post resin core were made according to the clinical procedure and methods. All of them were repaired with zirconia all-ceramic crown. In this paper, the edge and inner space of the crown were compared by using gap imprinting method under a 100-ploidy microscope, and the experimental data were statistically analyzed by SPSS 17.0 software. Results: the results of measurement of edge clearance of Zirconia ceramic crowns in shaded cobalt-chromium alloy post core group, zirconia post core group and fiber post resin core group were 96.98 卤3.51 and 62.34 卤3.22, 59.00 卤3.96 渭 m, respectively. The internal space was 68.52 卤4.08 渭 m. The edge clearance and internal clearance of the shaded cobalt-chromium alloy pile core group and the zirconia pile core group, There was no significant difference in the edge and internal space between the Zirconia pile core group and the fibrous pile resin core group (P 0.05), and there was no significant difference in the edge and internal gap between the Zirconia pile core group and the fiber post resin core group. Conclusion the marginal fitness of zirconia all-ceramic crowns made by the three kinds of pile-core methods is in the range of clinical acceptability, but the edge fitness of all ceramic crowns made of zirconia post core and fiber post resin core is closer to the American Dental Association standard. It is worth popularizing and applying.
【作者单位】：珠海市口腔医院修复科;
【基金】：珠海市科技计划项目(编号:20161027E030049)
【分类号】：R783.3

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