当有临床缺乏牙齿数目和历史表明,他们没有被提取,部分无牙和牙压紧可以考虑。射线探伤,然而,可能揭示多个影响牙齿和部分无牙可以拒绝。1 – 3全景片可以显示多个影响牙齿或在某些情况下辐射不能透过分散在整个下巴。根尖周的电影使临床医生能够容易识别的防辐射影响的牙齿。1的数量和形状的细节,牙齿根部,外部吸收和初期囊性变化与受影响的牙齿可以更好地可视化在根尖周的射线照片。咬合的射线照片可能有助于识别影响牙齿的位置和数量。
When there is a clinical absence of a number of teeth and the history indicates that they have not been extracted, partial anodontia and tooth impaction can be considered. Radiographic examination, however, may reveal multiple impacted teeth and partial anodontia can be rejected.1-3 Panoramic radiographs may show multiple impacted teeth or in some instances radiopacities scattered throughout the jaws. Periapical films enable the clinician to readily identify the radiopacities as impacted teeth.1 Details of the number and shape of the tooth roots, external resorption and initial stage cystic changes associated with the impacted teeth can be better visualized on periapical radiographs. Occlusal radiographs may be helpful in identifying the location and number of impacted teeth.