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目的评价不同角度基台用于前牙种植义齿修复的临床效果。方法选择2013年1月至2015年10月来齐河县人民医院口腔科接受前牙区种植修复的患者56例,共植入77颗Straumann种植体并完成单冠修复,修复完成后根据选用的基台分为直基台组(49颗)和角度基台组(28颗)。随访6~36个月,分别记录2组种植义齿机械并发症的发生情况,拍摄平行投照X线片测量种植体周围骨吸收量,采用寿命表法计算两组基台种植义齿的3年累积存留率,应用红色美学指数(pink esthetic score,PES)对上颌前牙区单牙种植修复后软组织的美学效果进行评价。应用SPSS 17.0软件包对数据进行统计学分析。结果角度基台组的3年累积存留率为96.4%,直基台组为100%。种植义齿机械并发症的总体发生率为9.1%,两组基台种植义齿的机械并发症发生率及年均骨吸收量的差异均无统计学意义(均P>0.05)。无论在基线期还是随访期,角度基台组的PES总分均明显低于直基台组(P<0.05)。结论角度基台与直基台种植义齿修复在种植体周围骨吸收程度及机械并发症发生率方面无明显差异,前牙区种植义齿修复采用直基台的临床美学效果要优于角度基台。
Objective To evaluate the clinical effect of abutments with different angles on prosthetic dentures. Methods From January 2013 to October 2015, 56 patients with anterior denture implants were enrolled in Department of Stomatology, Qihe County People’s Hospital from January 2013 to January 2015. A total of 77 Straumann implants were implanted and single-crown implants were repaired. After the repair was completed, Abutment is divided into straight base group (49) and angle abutment group (28). The patients were followed up for 6 to 36 months. The mechanical complications of 2 groups of implant denture were recorded respectively. The bone resorption around the implant was measured by X-ray and the life table method was used to calculate the 3-year cumulative The esthetic score of the soft tissue in the maxillary anterior region was evaluated by the pink esthetic score (PES). Data was statistically analyzed using SPSS 17.0 software package. Results The 3-year cumulative survival rate was 96.4% in the abutment group and 100% in the straight abutment group. The overall incidence of mechanical complications of implant denture was 9.1%. There was no significant difference in the incidence of mechanical complications and average annual bone resorption between two groups of abutments (all P> 0.05). The PES score of the angle abutment group was significantly lower than that of the base abutment group (P <0.05) both at baseline and follow-up. Conclusion There is no significant difference in the degree of bone resorption and the incidence of mechanical complications between the abutment abutment and the orthopedic abutment prosthesis. The clinical aesthetics of orthopedic denture restorations with anterior abutment is superior to that of angle abutment.