IPS e．maxPress全瓷冠和三单位固定桥的临床评价

Clinical evaluation of IPS e. max Press all-ceramic crowns and three-unit fixed partial dentures

目的探讨在牙科美容修复中应用IPSe．maxPress全瓷冠桥的临床疗效及其对基牙牙周组织的影响，总结相关影响因素。方法采用前瞻性研究的方法，对符合纳入标准的19例患者行IPSe．maxPress全瓷冠或全瓷三单位固定桥修复，其中全瓷冠25例，全瓷三单位固定桥6例，参照改良美国公共健康协会标准，对其临床效果进行追踪评价，并记录修复体及对照牙菌斑指数（plagueindex，PLI）及龈沟出血指数（suleus bleading index，SBI）。结果经过3～12个月的临床追踪观察，无1例IPSe．maxPress修复体松动、折裂、脱落或被替换，修复体组和对照牙组的PLI及SBI的差异无统计学意义，修复体组在不同复诊时间PLI及SBI前后差异无统计学意义。结论IPSe．maxPress全瓷冠桥可获良好的近期临床效果。

Objective To evaluate the clinical performance of IPS e. max Press all ceramic crowns and three-unit fixed partial dentures （FPDs） and to investigate the periodontal response to the presence of the restorations. Methods According to the inclusion criteria, 19 patients with dental defects or single- tooth loss were recruited, including 25 crowns and 6 all-ceramic FPDs. The modified United States Public Health Service criteria were used for follow up evaluation. Plaque index （PI） and sulcus bleeding index （SBI） were recorded for the ceramic restorations and the control teeth. Results No crown and FPD fractures were observed during the evaluation period. There was no statistically significant difference regarding PLI and SBI scores between restorative teeth and the control teeth. And the difference between differ- ent recalled times of PLI and SBI of the restorations was no statistically significant. Conclusion IPS e. max Press crowns and three-unit fixed partial dentures exhibit a satisfactory clinical performance.