Figure 2. Isolated inherited dentin defects. Primary dentition of a person with DGI-II (top). Bitewing radiographs show pulp obliteration in the molars. Primary dentition of a person with DGI-III (middle). Radiograph shows widened pulp and root canals. Several teeth have abscesses following pulp exposure due to rapid attrition. Permanent dentition of a person with DD-II (bottom). Note the near-normal color of the teeth. The pulp chambers are smaller than normal (becoming obliterated prematurely).