帐篷螺丝技术在上前牙区连续缺失种植修复中的疗效评价

目的:评价帐篷螺丝植骨技术在上前牙区连续多牙缺失水平向骨增量术中的临床应用效果。方法:使用帐篷螺丝技术(screw-tent technique)对9例上前牙连续缺失(21个位点),骨缺损严重的患者进行水平向骨增量,6~9个月后行种植体植入术,植入术后6个月行种植修复,并追踪观察修复后12个月的修复效果。结果:9例患者共植入21枚种植体,无一松动或者脱落,并获得较满意的修复效果。术前牙槽嵴宽度为(2.41±0.49)mm,术后6个月牙槽嵴宽度为(8.27±0.79)mm,对比植骨术前和术后,差异有统计学意义(P<0.05)。修复完成后12个月牙槽嵴宽度为(7.74±0.52),对比种植术后和修复后12个月,差异有统计学意义(P<0.05)。结论:螺丝技术在上前牙连续缺失的水平向骨增量中,可获得较理想的水平向骨增量效果及修复效果。但由于观察时间较短,其远期效果仍需要进一步的观察研究。

Evaluation of Screw-tent Technique for Dental Implants in the Upper Anterior Region with Continuous Adjacent Teeth Missing

Objective:To evaluate the clinical effect of screw-tent technique for dental implants in the upper anterior region with continuous adjacent teeth missing.Methods:Screw-tent technique was used in 9 patients with severe atrophic alveolar ridge in the upper anterior regions,followed with implants placement 6 months later.The final restorations were made 6 months later.The patient had been followed periodically for 12 months to evaluate the clinical outcomes.Results:A total of 21 implants were implanted in 9 patients without implant loose or lost.The widths of alveolar ridge were(2.41+0.49)mm before operation,(8.27+0.79)mm 6 months after bone augmentation,and(7.74+0.52)mm 12 months after restoration.There was significant difference between them(P<0.05).Conclusion:Screw-tent technique was a predictable method to augment alveolar ridge in partial edentulous cases with continuous adjacent teeth missing and severe resorbed ridges.However,long-term clinical outcomes remain to be observed.