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前牙种植由于可利用骨量的原因,存在手术风险大、术后效果差等缺点,甚至导致手术失败。而仅仅依靠传统根尖X线片、曲面断层X线片,很难全面、准确、合理地评估患者术前和术后上颌骨术区情况,且骨劈开、骨挤压等增加骨量的辅助方法,多数情况下是靠术者经验、手感及探针测量来粗略确定,缺乏三维影像学测量分析结果进行准确定位。加之前牙区即刻种植由于待拔除牙的干扰,术前难以制作相应种植导板进行术中精准导航定位。CT扫描能够清晰显示上颌种
Due to the availability of bone mass, anterior dental implants have the disadvantages of large surgical risks and poor postoperative effects, and even lead to surgical failure. However, it is difficult to evaluate the preoperative and postoperative maxillary operative area comprehensively, accurately and rationally with the aid of traditional apical X-ray films and curved tomographic X-ray films. Moreover, bone splitting and bone extrusion increase bone mass Auxiliary methods, in most cases by the surgeon’s experience, feel and probe to roughly determine the measurement, the lack of three-dimensional imaging measurement and analysis of the results for accurate positioning. In addition, the immediate implant area immediately removed due to the interference of teeth to be removed, it is difficult to preoperative production of the corresponding planting guide intraoperative precision navigation and positioning. CT scan can clearly show the maxillary species