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目的探讨螺旋CT三维重建技术在闭合式外科导萌加正畸牵引治疗法中的应用价值。方法将1992—2008年我科室诊治的埋伏牙患者90例共97颗分为两个治疗组,都采用闭合式外科导萌加正畸牵引治疗法:1992—2000年治疗组,采用普通X线片作为诊断及治疗依据,诊治埋伏牙患者48例,共51颗;2000—2008年治疗组,采用螺旋CT三维重建技术作为诊断及治疗依据,诊治埋伏牙患者42例,共46颗。结果对比1992—2000年治疗组,2000—2008年治疗组中,采用闭合式外科导萌加正畸牵引治疗法的成功率更高。结论采取螺旋CT三维重建技术,可极大提高闭合式外科导萌加正畸牵引法治疗埋伏牙的成功率。
Objective To investigate the value of spiral CT three-dimensional reconstruction in closed surgical guide and orthodontic traction therapy. Methods A total of 97 cases of impacted teeth treated in our department from 1992 to 2008 were divided into two groups of 97. All of them were treated by closed surgical guidance plus orthodontic traction therapy: 1992-2000 treatment group, As a basis for diagnosis and treatment, 48 cases of impacted teeth were diagnosed and treated. A total of 51 patients were diagnosed and treated. Among 2000-2008 treatment groups, 42 patients with impacted teeth were diagnosed and treated by spiral CT three-dimensional reconstruction. Results Compared with the 1992-2000 treatment group, 2000-2008 treatment group, the use of closed surgical guidance plus orthodontic traction therapy has a higher success rate. Conclusion The three-dimensional reconstruction of spiral CT can greatly improve the success rate of closed surgical guidance plus orthodontic traction in the treatment of impacted teeth.