改良骨劈开技术联合引导骨再生术在牙槽骨骨缺损种植修复中的应用疗效评估

目的 浅析改良骨劈开技术与引导骨再生术（guided bone regeneration,GBR）联用治疗牙槽骨骨缺损患者对其美学效果与骨吸收情况的影响。方法 选取2018年8月至2019年6月在宁波市妇女儿童医院口腔科就诊的120例牙槽骨骨缺损患者,依据牙骨缺损情况和牙周探诊目测法分成观察组（n=68）与对照组（n=52）,对照组予以GBR治疗,观察组在对照组的基础上联用改良骨劈开技术治疗;依据红色美学指数（red aesthetic index,PES）与白色美学指数（white aesthetic index,WES）评估两组在修复术结束当天与负重随访6个月时的美学效果,以及负重随访6个月骨吸收的情况,比较手术前、负重6个月后种植处牙槽骨的骨壁厚度的变化,以及负重随访6个月的满意度。结果 负重随访6个月,观察组PES与WES评分皆显著高于对照组（P<0.05）,观察组远中与近中边缘的骨吸收量皆显著少于对照组（P<0.05）,观察组10mm、7mm与1mm点位牙槽骨的骨壁厚度皆显著高于对照组（P<0.05）,观察组满意度显著优于对照组（P<0.05）。结论 牙槽骨缺损患者予以改良骨劈开技术联合GBR治疗的美学效果显著,可有效改善骨吸收情况,且满意度更高,值得应用与推广。

Evaluation of the application effect of modified bone splitting technique combined with guided bone regeneration in implant repair of alveolar bone defect

Objective To analyze the effect of modified bone splitting technique combined with guided bone regeneration (GBR) on aesthetic effect and bone resorption in patients with alveolar bone defect. Methods A total of 120 patients with bone defects in the alveolar bone who attended in the Ningbo Women and Children''s Hospital from August 2018 to June 2019 were selected and divided into an observation group (n=68) and a control group (n=52) based on visual inspection of the bone defects and periodontal probing. The aesthetic results of the two groups were assessed on the day of the restoration and at 6 months of weight-bearing follow-up according to the red aesthetic index (PES) and the white aesthetic index (WES), as well as the bone resorption at 6 months of weight-bearing follow-up. The results were compared with the changes in bone wall thickness at the implant site before surgery and after 6 months of weight-bearing, as well as with satisfaction at 6 months of weight-bearing. Results After 6 months of weight-bearing follow-up, the PES and WES scores were significantly higher in the observation group than those in the control group (P<0.05), the amount of bone resorption was significantly less in the observation group than that in the control group (P<0.05) at both the distal and proximal mesial margins, the bone wall thickness was significantly higher in the observation group than that in the control group at the 10mm, 7mm and 1mm points (P<0.05), and the satisfaction level was significantly better in the observation group than that in the control group (P<0.05). Conclusion The aesthetic effect of modified bone splitting technique combined with GBR in patients with alveolar bone defect is significant, which can effectively improve bone resorption and has higher satisfaction. It is worthy of application and promotion.