电火花蚀刻技术在种植修复体制作中的应用  

Application of spark erosion technology in manufacture of implant prosthesis

作　　者：崔宏燕[1] 邸萍[1] 李健慧[1] 林野[1] 刘蓉蓉[1] 

机构地区：[1]北京大学口腔医学院.口腔医院种植科,北京100081

出　　处：《北京大学学报（医学版）》2015年第2期336-339,共4页Journal of Peking University:Health Sciences

摘　　要：目的:采用电火花蚀刻技术加工非贵金属制作种植体支持烤瓷桥行种植修复,探索应用电火花蚀刻技术在种植修复体制作过程中的各项技术细节和技术指标。方法:2011年9月至2013年2月在北京大学口腔医院种植中心应用电火花蚀刻机,为12例患者提供电火花蚀刻技术加工制作非贵金属基底烤瓷桥完成种植修复,其中男性9例,女性3例,共计52颗种植体,92个修复单位。应用的种植系统有Nobel Biocare公司的Nobel Replace系统、Camlog公司的Camlog系统、Densply公司的Ankylos系统。灌注含导电连线的模型为工作模型,导电连线一端连接固定有种植体基台的代型,另一端连接修复体的金属基底桥架。在电火花蚀刻过程中,使其一端作为工具电极,另一端作为工件电极分别接脉冲电源,通过电火花蚀刻机的预定程序控制工具电极向工件进给,当两电极间的间隙达到一定距离时,产生火花放电,去除掉金属间突出的部分。结果:金属桥架与基台间所沉降的间隙最小值为0.21mm,为两颗种植体支持修复的2单位连冠;最大值为2.59 mm,为本研究初期6颗种植体支持修复的11单位烤瓷桥;平均沉降的间隙为0.68 mm。使用电火花蚀刻技术后,金属基底桥架就位顺利,与基台之间被动就位稳定,边缘密合。结论:采用电火花蚀刻加工方法制作种植体支持的非贵金属烤瓷桥降低了制作成本,减小了患者的经济负担,简化了加工工艺,提高了修复体的加工精度,近期效果好,但因观察时间较短,远期效果有待进一步观察。Objective：To evaluate the influence of the implant-supported porcelain bridges made from non-precious metals using spark erosion techniques, and to discuss the feasibility and details of making the implant restoration by spark erosion technique.Methods： The study included 12 patients （ 9 males and 3 females） with 92 units implant-supported non-precious porcelain bridge from Sep.2011 to Feb. 2013.All the patients received implant treatment in Department of Oral Implantology, Peking University School and Hospital of Stomatology.The total of 52 implants, were from Nobel Biocare implant system, Camlog implant system and Ankylos implant system.The implant analogs were connected in sequence with a copper wire to guarantee conductivity.The implant electrodes represented one electrode and the superstructure the other.During spark-erosion machining, the cast holding the implant electrodes and the prosthetic framework were moved toward one another, causing an electrical erosion of the protruding ele-ments.Results：After the spark-erosion machining, the minimum gap between the framework and abut-ment was 0.21 mm, which was two units bridge.The maximum was 2.59 mm, which was 11 units bridge with 6 implants.The average gap was 0.68 mm.After the spark-erosion machining, the bridge fitted well with the passive position stability.Conclusion： The method of making implant-supported non-precious porcelain bridge reduces costs on patients.Spark erosion has the potential to provide implant framework with an excellent fit.The patients are satisfied with the clinical results.

关 键 词：牙种植体 牙修复体 电火花蚀刻 

分 类 号：R783[医药卫生—口腔医学]