Objective To investigate the application of the limited cone beam CT (3DX) for the diagnosis of the hard tissue disease of apex and the anatomical morphology of the teeth.

• 目的研究牙科用三维小视野照射CT(3DX)在口腔内科根尖部硬组织疾病诊断和牙齿解剖学形态影像中的价值。