单个上前牙即刻种植即刻非功能修复的临床疗效观察

目的探讨美学区单个上前牙即刻种植即刻非功能修复临床疗效。方法7例上颌单个无法保留患牙，拔除后即刻植入种植体．当日制作并戴入临时树脂冠，6个月后复诊取模，选择合适基台制作永久金属烤瓷或全瓷修复体．最终修复体戴人后1年复诊．比较刚戴入修复体与1年后随诊时种植体周骨组织水平以及红色美学指数（PES）的变化情况。结果种植体成功率为100％，种植体近、远中周牙槽骨变化分别为（0．79±0．48）mm、（0．71±0．46）mm：刚戴人修复体与1年后随诊时PES值分别为（8．6±1.3）和（11．1±1．8），Walcoxon统计学分析．两者差异有统计学意义（P=0．027）。结论在严格选择病例的情况下．单牙即刻种植即刻非功能修复．可取得很好的美学效果，种植体周软组织美学效果随着戴人时间增长可得到改善，是一种可行的方法。

The clinic effect of immediate single-tooth implants and non-functional provisional crowns in the anterior maxilla

Objective To observe the clinical effect of the restoration of a single upper missing tooth with immediate implant placement and non-functional prosthesis in the aesthetic area. Methods Seven consecutive patients with un-savable single teeth in the aesthetic zone were included. Teeth were extracted and replaced with immediate implant and non-functional provisional crowns. Suitable permanent abutments were chosen and porcelain-fused-metal or all-ceramic restorations were made on the abutments after 6 months. Patients were followed up 1 year after crown insertion. The marginal bone level around the implant and Pink Esthetic Score (PES) value immediately after crown insertion and 1 year later were measured for comparison. Results The success rate of implant was 100%, mesial and distal peri-implant bone changes were (0.79 ± 0.48)mm and (0.71 ± 0.46)mm respectively. The average PES value was (8.6 ± 1.3) and (11.1 ± 1.8), respectively. Significant difference was found by Walcoxon analysis (P＝0.027). Conclusions For strictly selected cases, single-tooth immediate implant and immediate non-functional prosthetsis is an effective method. Good appearance can be achieved and the esthetics of peri-implant soft tissue can be improved over time.