镍铬合金和钛合金烤瓷冠修复前牙的临床效果评价

Clinical evaluation of the effect of Ni-Cr alloy and Ti-Lite alloy porcelain fused metal crown in restoring anterior teeth.

目的:比较镍铬合金烤瓷冠和钛合金烤瓷冠修复前牙的临床效果。方法:对200例患者的286颗前牙进行金属烤瓷冠修复,分别采用镍铬合金烤瓷冠和钛合金烤瓷冠修复各143颗牙,修复后一年进行美学效果评价,观察、比较修复体的外形、色泽及牙龈的情况。结果:修复后即刻检查,两种金属烤瓷冠的修复效果良好。修复一年后,两种金属烤瓷冠的外形和色泽无明显变化,经镍铬合金烤瓷冠修复的患牙,53个(37.1%)出现牙龈变色,31个(21.7%)出现轻度牙龈炎;经钛合金烤瓷冠修复的患牙,8个(5.6%)出现牙龈变色,6个(4.2%)出现轻度牙龈炎。结论:钛合金烤瓷冠较镍铬合金烤瓷冠修复前牙美学效果更佳,且对牙周组织影响更小。

Objective：To observe and compare the clinical effect of Ni-Cr alloy porcelain fused metal crown（PFM） and Ti-Lite alloy PFM in restoring anterior teeth.Method：A total of 286 anterior teeth from 200 patients were restored,in which 143 teeth were restored with Ni-Cr alloy PFM,143 teeth were restored with Ti-Lite alloy PFM.follow,up one year,compare the change of shape and colour of the two crown and gingiva.Result：The clinical effect of Ni-Cr alloy PFM was as good as Ti-Lite alloy PFM when checked up after cementation at once.However,after one year,there are no diffirence of shape and colour of the two crown,37.1 % cases restored by Ni-Cr alloy PFM showed the change of gingival color and 21.7 % cases showed gingivitis,only 5.6 % cases restored by Ti-Lite alloy PFM showed the change of gingival color and 4.2 % cases showed gingivitis.Conclusion：The esthetic effect and the effection of periodontal tissue by Ti-Lite alloy PFM is better than Ni-Cr alloy PFM.