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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 compare the clinical effect of Ni-Cr alloy porcelain crowns and titanium alloy porcelain crowns in anterior teeth restoration. Methods: A total of 286 anterior teeth of 200 patients were repaired with metal porcelain crowns. Each tooth was repaired with Ni-Cr alloy porcelain crowns and titanium alloy porcelain crowns. One year after repairing, the aesthetic effect was evaluated and compared. Body shape, color and gingival condition. Results: Immediately after the repair, the restoration of the two metal porcelain crowns was effective. After one year of repair, there was no significant change in the shape and color of the two kinds of metal porcelain crowns. In the teeth restored by the nickel-chromium alloy porcelain crowns, discoloration of the gingiva was found in 53 (37.1%) and mild in 31 (21.7%) Gingivitis; Gingival discoloration occurred in 8 (5.6%) of the affected teeth repaired with a titanium alloy porcelain crown, with mild gingivitis in 6 (4.2%). CONCLUSION: The titanium alloy porcelain crown has better aesthetics effect than the Ni-Cr alloy porcelain crowns in repairing the anterior teeth, and has less effect on periodontal tissue.