Abstract
This investigation was undertaken to evaluate diagnostic value of radiography concerning proximal caries of deciduous molars. Forty extracted deciduous molars were used for the study. Forty-seven proximal surfaces except those which were sound, filled and severly decayed were used for making inspective and radiographical examination. The early caries group were observed histologically after preparing the sections. After completion of this procedure, radiographical examination were compared with the inspective examination and the histological features.
The conclusions were as follows:
1. Concerning the early caries group, many cases showed a disagreement between the radiographical and the inspective examination. Therefore it seemed difficult to make a diagnosis of this group with radiographs. Histological features showed more progres sed lesions than did the radiolucent features.
2. On the other hand, the group which had caries lesions on the dentine showed conformity between the radiographical and the inspective examination. So, it seemed comparatively easy to make a diagnosis of this group.
