IPS-Empress Ⅱ铸瓷冠的临床效果评价

Evaluation of IPS-Empress Ⅱ ceramic crown:A 5-year clinical study

目的:评价IPS-EmpressⅡ铸瓷冠修复患牙5年的临床效果。方法:39例患者的单牙缺失、牙体缺损、畸形小牙及变色牙用铸瓷冠、桥进行修复(共130颗)。于修复体粘固后2周及6、12～60个月复查评价临床效果。评价内容包括:修复体完整度、边缘适合度、牙龈健康情况、牙敏感症状及颜色匹配。结果:96.2%的修复体保持完整。1颗瓷冠因咬硬物致切端崩瓷;另1颗瓷冠在修复3个月后与纤维桩核同时脱落,系纤维桩粘固不良;1个全瓷桥折断,为咬合创伤造成。97.7%的瓷冠边缘良好。牙龈健康的基牙占修复牙数的92.3%,仅3颗在复查时有明显炎症。95.7%的活髓基牙修复1年以上仍保持活力,但2颗牙发生根尖炎,表明在全瓷冠牙预备及酸蚀黏固时有可能会造成牙髓损伤。未发现继发龋、边缘变色及明显颜色不协调。结论:用IPS-EmpressⅡ铸瓷冠对前牙行冠、桥修复可获良好临床效果,且具完好美观表现。

Objective： To evaluate the clinical performance of IPS-Empress Ⅱ ceramic crown in a five-year period. Methods：IPS-Empress Ⅱ ceramic crown was applied in 130 teeth treatment of 39 patients. The restorative cases include the single tooth missing, acquired tooth body defect, malformed teeth and discoloration caused by tetracycline, fluoride and the root canal treatment. The 130 teeth were investigated after luting in two weeks, 6, 12 to 60 months respectively. Modified Ryge criteria were used to assess the integrity of restoration, gingival health, color match, marginal adaptation, and sensitivity. Results：More than 96.2% restorations were found to be intact and had excellent marginal adaptation. Little wane existed in one crown at the incisal area. One crown fell with its post caused by failed post adhere. Due to the heavy occlusion force, one of the posterior bridge cracked. Obvious inflammation was found in 3 teeth and only two teeth suffered apicitis. No secondary caries and unsatisfactory color match were found in each follow-up examination. Concluslon：IPS-Empress Ⅱ ceramic crown and bridge is a reliable and ideal choice for the anterior aesthetic restoration.