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我们在实际工作中曾碰到一例下颌骨颏部偏左侧巨大肿块的病人。行下颌骨侧位,下颌颏部上下位及咬合片位投照。但病变范围较大,所得照片均因不能包全病灶或与牙齿重叠太多,影响诊断以及进一步手术方案的制定。经过仔细研究,我们改变投照体位,将暗盒置于下颌骨下方投照。获得照片达到诊断要求。照片显示病灶范围充分,可见①左侧下颌颏部密度增高。②病灶大小约2cm×3cm,可见囊状透亮区,边界清楚,有骨化影。③部分牙根骨破坏。初诊为造釉细胞瘤(后经病理证实)。在以后的工作中,我们经常使用此方法,不断摸索并加以改进,获得照片较为满意。下面简单介绍一下投照方法及其应用价值。
In practice, we encountered a patient with a huge left massif in the mandibular chin. Row of mandibular lateral position, mandibular chin upper and lower bits and biting tablets projection. However, a larger range of lesions, the resulting photos are due to not cover the whole lesion or overlap with the teeth too much, affecting the diagnosis and further surgical program development. After careful study, we change the projection position, the cassette placed under the mandible to vote. Get photos to meet diagnostic requirements. Photo shows the full range of lesions, visible ① chin on the left jaw increased density. ② lesion size of about 2cm × 3cm, visible cystic translucent area, the boundary is clear, with ossification. ③ part of the root bone destruction. Initial diagnosis of ameloblastoma (confirmed by pathology). In the future work, we often use this method, constantly explore and improve, get photos more satisfied. Here is a brief introduction of projection method and its application value.