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目的研制氧化锆基台并评价其与种植体连接界面的适合性。方法2007年5月至2009年1月在青岛大学医学院附属医院口腔科选用纳米氧化锆粉,采用冷等静压成型方法和二次烧结工艺制作氧化锆基台,选取15枚氧化锆基台与0sstemUSⅡ种植体装配,应用扫描电镜测量基台与种植体连接界面微间隙。结果研制的氧化锆基台与种植体装配顺利,基台与种植体连接界面的边缘微间隙为(3.17±0.34)μm、内部微间隙为(28.4±2.7)μm。结论采用纳米氧化锆粉经冷等静压成型和二次烧结工艺制作的基台与种植体有较好的适合性。
Objective To develop zirconia abutments and assess the suitability of the interface with implant. Methods From May 2007 to January 2009, zirconium oxide nanoparticles were selected from Department of Stomatology, Affiliated Hospital of Medical College of Qingdao University, and zirconia based abutments were made by cold isostatic pressing and secondary sintering. Fifteen zirconia-based abutments With 0sstemUS Ⅱ implant assembly, the use of scanning electron microscopy to measure abutment and implant interface micro-gap. Results The zirconia abutments and implants were assembled successfully. The edge micro-gap at the interface between abutment and implant was (3.17 ± 0.34) μm and the internal micro-gap was (28.4 ± 2.7) μm. Conclusion The abutments and implants prepared by cold isostatic pressing and secondary sintering using nano-zirconia powder have good adaptability.