【摘要】 目的 研究一种外置型空间稳定装置对植骨区域的成骨影响。方法 选取上颌前牙缺失伴牙槽嵴唇侧骨缺损的患者，随机分为两组。试验组在植骨术后戴入外置型空间稳定装置，对照组无佩戴。通过测量分析术前、术后即刻及术后6个月时的CBCT数据，对比在采用或不采用外置型空间稳定装置的情况下，在植骨术后6个月的成骨情况。结果 最终入选并观测17个植骨位点，其中试验组7个位点，对照组10个位点。试验组在嵴顶下2 mm和4 mm处的水平骨吸收率显著低于对照组相应观测水平处的水平骨吸收率(P=0.001)。各组牙槽嵴顶下2 mm处的水平骨吸收率均显著高于相应组别中嵴顶下4 mm处的骨吸收率(P=0.003)。结论 本研究所使用的外置型空间稳定装置对于维持空间稳定、减少骨吸收具有较好的临床效果。更多还原

【Abstract】 Objective To study the effect of a space stabilizing device on the capacity for osteogenesis in the bone-grafted area. Methods Patients with anterior teeth defects as well as labial alveolar ridge defects were randomly divided into two groups: the experimental group was treated using a space stabilization device after guided bone regeneration whereas the control group received regular guided bone regeneration. The CBCT data was analyzed prior to, immediately and 6 months after procedure to compare the osteogenesis with or without the device. Results Seventeen bone-grafted sites were examined(7 in the experimental group and 10 in the control group). At 2 mm and 4 mm below the alveolar ridge, the horizontal bone resorption rate in the experimental group was significantly lower than the corresponding level in the control group(P=0.001). The horizontal bone resorption rate at 2 mm below the alveolar ridge of each group was significantly higher than that at 4 mm below the alveolar ridge in corresponding groups(P=0.003). Conclusion The space stabilizing device used in this study has a positive clinical impact on preserving space stability and minimizing bone resorption.更多还原