下颌骨是口腔颌面部病患较多部位、因此下颌骨的X线检查在口腔检查中占有重要地位。该骨呈弓型,如按四肢骨那样常规拍正侧位,相互重叠严重,难以达到诊断目的。必须根据下颌骨的形态、位置特点和临床检查目的恰当地选用各种不同的投照方法,才能达到预期目的,根据我们经验现介绍几种常用投照方法,供参考。 Mandible is more parts of oral and maxillofacial patients, so the mandibular X-ray examination plays an important role in oral examination. The bow was bow-shaped, as the limbs, as usual lateral normal shot, overlap each other serious, difficult to achieve diagnostic purposes. Must be based on the shape of the mandible, location characteristics and clinical examination purposes appropriate selection of a variety of projection methods in order to achieve the desired purpose, according to our experience now introduce several commonly used projection method for reference.