上海交通大学学报（医学版）

上海交通大学学报（医学版）

• 论著（临床研究） • 上一篇    下一篇

激光钴铬基底冠与铸造钴铬合金基底冠的边缘密合度比较

许卫星1， 袁剑鸣2， 唐颖2， 田孝梅3， 张碧楚3   

  1. 1.上海市黄浦区第二牙病防治所特需门诊， 上海 200020; 2.上海市黄浦区第二牙病防治所口腔修复科， 上海 200020; 3.上海市交通大学 医学院附属第九人民医院口腔特需科， 上海 200011
  • 出版日期:2016-10-28 发布日期:2016-11-29
  • 作者简介:许卫星（1971—）， 女， 副主任医师， 硕士生； 电子信箱： smlstar868@163.com。
  • 基金资助:

    上海市黄浦区科委科研基金（HKW201410）

Comparison of the marginal accuracy between selective laser melting Co-Cr basal crowns and casting Co-Cr basal crowns

XU Wei-xing1, YUAN Jian-ming2, TANG Ying2, TIAN Xiao-mei3, ZHANG Bi-chu3   

  1. 1.VIP Clinic, the Second Stomatological Disease Institution of Huangpu District in Shanghai, Shanghai 200020, China； 2.Department of Prosthodontics, the Second Stomatological Disease Institution of Huangpu District in Shanghai, Shanghai 200020, China; 3.Oral VIP Clinic, Shanghai Ninth Peoples Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200011, China
  • Online:2016-10-28 Published:2016-11-29
  • Supported by:

    Foundation for Scientific Research of Science Committee of Huangpu District in Shanghai, HKW201410

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摘要：

目的·探讨临床实际应用中选择性激光熔积（SLM）钴铬合金基底冠与铸造钴铬合金基底冠边缘密合度的差异。方法·按全冠牙体标准制备法制备临床病例牙体20个，取模并灌注石膏模型后，分别制作SLM钴铬合金基底冠和铸造钴铬合金基底冠各20个，将其就位于石膏模型上。在体式显微镜下，对利用硅橡胶复制技术得到的基底冠与石膏模型之间的边缘间隙宽度代型进行观察，并测量边缘间隙的宽度，最后计算2组20个样本的平均值，并进行比较。结果·SLM钴铬合金基底冠和铸造钴铬合金基底冠平均边缘间隙宽度分别为（60.39±10.63）μm和（91.41±37.68）μm，SLM钴铬合金基底冠边缘间隙宽度显著小于铸造钴铬合金冠(P=0.000)。结论·SLM钴铬合金基底冠边缘密合度显著高于铸造钴铬合金基底冠，具有更好的临床修复效果。

关键词: 选择性激光熔积, 钴铬合金, 基底冠, 边缘密合度

Abstract:

Objective·To explore the difference in marginal accuracy between cobalt-chromium basal crowns produced by selective laser melting (SLM) and casting in clinical application. Methods·Twenty plaster casts for 20 clinical teeth that were prepared according to the standard of full crown were produced. Twenty SLM cobalt-chromium basal crowns and 20 casting cobalt-chromium basal crowns were produced and placed on plaster casts. A stereomicroscope was used to observe the marginal gap pattern between basal crowns produced with silicon rubber replication technology and plaster casts, and measure the marginal gap widths. Finally, average values of two groups were calculated and compared. Results·The average marginal gap widths of SLM cobalt-chromium basal crowns and casting cobalt-chromium basal crowns were (60.39±10.63) μm and (91.41±37.68) μm, respectively. The former was significant smaller than the latter (P=0.000). Conclusion·SLM cobalt-chromium basal crowns have a much high marginal accuracy and a better clinical restoration effect than casting cobalt-chromium basal crowns.

Key words: selective laser melting, cobalt-chromium alloy, basal crown, marginal adaptation