缺牙间隙对美学区水平骨增量延期种植的临床效果影响研究

Effects of Edentulous Space on Lateral Bone Augmentation with Delayed Implantation in Aesthetics Area

目的:评价不同缺牙间隙大小对上前牙区连续缺牙伴水平骨量不足、行水平骨增量延期种植的临床效果影响。方法:回顾性分析2013年1月~2019年6月期间,于烟台市口腔医院种植科就诊,上颌前牙连续缺失,行水平骨增量延期种植的患者,根据缺牙间隙分为两组,A组为2颗牙连续缺失,B组为3~6颗牙连续缺失。通过Mimics软件重建骨增量区3D模型,测量骨增量的体积及宽度;通过Image J软件测量平行投照根尖片种植体周围边缘骨丧失高度。使用SPSS 26.0软件,对测得的结果进行统计分析,P<0.05为差异具有统计学意义。结果:纳入44例患者,年龄18~60(平均38.52±12.56)岁。共计122个位点,植入94枚种植体,其中A组44枚,B组50枚。A、B组每牙位骨增量体积差异无统计学意义(P>0.05);A组每牙位骨增量宽度小于B组每牙位骨增量宽度(P<0.05);种植体周围骨质丧失高度随时间变化而增加(P<0.05);组别对种植体近中及远中骨边缘丧失高度的影响差异无统计学意义(P>0.05)。结论:美学区水平骨增量延期种植可获得满意的临床效果,缺牙间隙对对骨增量体积及种植体周围边缘骨质稳定性无影响。

Objective:To evaluate the effect of edentulous space on lateral bone augmentation with delayed implantation in the maxillary anterior area.Methods:A retrospective analysis was performed,and patients with consecutive missing maxillary anterior teeth who were treated in the department of implant dentistry in Yantai stomatological hospital from January 2013 to June 2019 were included.All patients were treated with lateral bone augmentation and delayed implantation.They were divided into two groups according to the edentulous space,group A with 2 missing teeth space,and group B with 3-6 missing teeth space.A 3D bone model derived from CBCT was established.The augmented bone width and volume were measured and analyzed by using Mimics.Image J software was used to measure the bone loss height around the edge of the implant in periapical radiology.Results:A total of 44 patients were included with 122 missing teeth and 94 implants,of which,44 implants were in group A and 50 implants in group B.There was no statistically significant difference as regarding to the average augmented bone volume between groups(P>0.05).The average augmented bone width in group A was significantly smaller than that in group B(P<0.05).Marginal bone level was significantly decreased at the follow-up time in both groups(P<0.05).No statistically significant difference was observed on marginal bone loss between groups(P>0.05).Conclusion:Delayed implantation with lateral bone augmentation in the aesthetic zone can achieve satisfactory clinical results.The missing tooth gap has no influence on the bone augmentation volume and the stability of the bone around the implant.