颌骨牙列曲面体层技术和根尖定位片在埋伏阻生牙定位中的应用评价

目的:比较颌骨牙列曲面体层技术和根尖定位片在埋伏阻生牙及多生牙定位中的应用价值。方法:对43例埋伏阻生牙及多生牙分别采用颌骨牙列曲面体层技术和临床上最常用的根尖定位片进行投照定位,对这2种方法的符合率进行χ2检验。结果:颌骨牙列曲面体层技术和根尖定位片均能较准确显示埋伏阻生牙及多生牙在颌骨中的位置,与手术结果符合率分别为93.02%和95.35%,两者无显著性差异(P>0.05)。结论:颌骨牙列曲面体层技术能较准确地显示埋伏阻生牙及多生牙在颌骨中的位置。

Comparison of dentomaxillary pantomography and periapical radiographs with horizontal tube shift in localizing the impacted teeth

PURPOSE: To compare the clinic value between dentomaxillary pantomography and periapical radiographs in localization of the impacted teeth. METHODS: 43 impacted teeth were localized with both dentomaxillary pantomography technique and periapical radiographs with horizontal tube shift which is clinically widely used. And a comparison between the two methods was carried out using Chi square test. RESULTS: Both dentomaxillary pantomography and periapical radiographs with horizontal tube shift can relatively precisely demonstrate the position of the impacted teeth. The percentage of the cases which the image and the result of surgery was consistent in the two methods was 93.02% and 95.35%(P>0.05)respectively.There was no statistical difference between the two groups. CONCLUSIONS: Dentomaxillary pantomography can precisely localize the impacted teeth.