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目的探讨Osstem MS一段式种植体修复下前牙小间隙的效果。方法下前牙区单颗或多颗牙缺失86例,均采用Osstem MS一段式种植体种植修复,其中直径3mm种植体68枚(直径3mm组),直径2.5mm种植体68枚(直径2.5mm组),观察种植体种植成功率;术后随访1a,观察种植体边缘骨水平变化、软组织健康状况、种植体稳定系数(implant stability quotient,ISQ)评分、存留率等。结果 86例中136枚一段式种植体存留率100%,其中1例(2枚种植体)在冠修复软组织出现种植体周围炎,其余种植体均获成功,临床成功率98.5%;2组术后种植体周围软组织均健康,未发生种植体相关软组织并发症,修复后6、12个月时,直径2.5 mm组探诊深度(probe depth,PD)[(2.02±0.36)、(2.02±0.23)mm]、改良龈沟出血指数(modified gingival sulcus bleeding index,mBI)[(0.95±0.56)%、(1.26±0.26)%]、Furhauser软组织评分(pink esthetic score,PES)[(11.32±0.34)、(12.20±0.29)分]与直径3 mm组[PD(2.03±0.29)、(2.04±0.25)mm,mBI(0.96±0.14)%、(1.25±0.31)%,PES评分(11.25±0.33)、(12.22±0.33)分]比较差异均无统计学意义(P>0.05);6、12个月时,直径3mm组近中、远中边缘牙槽骨变化值[(0.095±0.016)、(0.108±0.025)mm,(0.096±0.032)、(0.106±0.017)mm]小于直径2.5mm组[(0.339±0.104)、(0.361±0.087)mm,(0.289±0.073)、(0.850±0.082)mm](P<0.05);术后6个月,直径3mm组种植体ISQ评分(68.3±6.6)明显高于直径2.5mm组(66.1±6.1)(P<0.05)。结论 Osstem MS一段式种植体修复缺牙间隙<6 mm的下前牙疗效确切,1a内,直径2.5、3mm种植体对软组织均无影响,3mm直径种植体的近、远中边缘骨吸收程度较2.5mm直径种植体小。
Objective To investigate the effect of an Osstem MS one-stage implant in repairing the small anterior gap. Methods One or more teeth in the anterior teeth were absent in 86 cases, all of them were implanted with Osstem MS one-stage implants, including 68 implants of 3mm in diameter (3mm in diameter), 68 implants of 2.5mm in diameter (2.5mm in diameter Group). The success rate of implant implantation was observed. The level of marginal bone changes, soft tissue health status, implant stability quotient (ISQ) score and survival rate were observed after follow-up. Results One hundred and sixty-six one-piece implants were found in 100% of the 86 cases. One of the three implants (2 implants) showed peri-implant peri-implantitis in the crown and the rest of the implants were successful with a clinical success rate of 98.5% The soft tissue around the implant was healthy and there was no implant-related soft tissue complications. The probe depth (PD) [(2.02 ± 0.36) and (2.02 ± 0.23 ) mm], modified gingival sulcus bleeding index (mBI) [(0.95 ± 0.56)%, (1.26 ± 0.26)%] and Furhauser pink esthetic score (PES) [(11.32 ± 0.34) , (12.20 ± 0.29) min] and 3 mm diameter group (PD (2.03 ± 0.29), (2.04 ± 0.25) mm, mBI 0.96 ± 0.14%, 1.25 ± 0.31%, PES score 11.25 ± 0.33, , (12.22 ± 0.33) points], respectively. There was no significant difference between the two groups (P> 0.05) 0.108 ± 0.025) mm, (0.096 ± 0.032) and (0.106 ± 0.017) mm, respectively, were significantly lower than those of the 2.5mm diameter group (0.339 ± 0.104, 0.361 ± 0.087mm, 0.289 ± 0.073, 0.850 ± 0.082mm ] (P <0.05). At 6 months after operation, the ISQ score of 3mm diameter implants (68.3 ± 6 .6) was significantly higher than the diameter of 2.5mm group (66.1 ± 6.1) (P <0.05). Conclusion One-stage Osstem MS is effective in repairing the anterior teeth with less than 6 mm of missing teeth. In 1a, 2.5 mm in diameter and 3 mm in diameter have no effect on the soft tissues. Compared with the 3 mm diameter, 2.5mm diameter implant small.