Читать книгу An Illustrated Guide to Oral Histology - Группа авторов - Страница 44

Dentin dysplasia (DD) is a rare genetic disorder that affects the development of dentin, mostly in radicular area. It can affect both dentitions, where the teeth have normal enamel but abnormal dentin with atypical pulp morphology. The first classification of DD was put forward by Witkop in the 1970s with DD divided into two types: DD‐1 (radicular type) and DD‐2 (coronal type) [16]. The teeth affected by DD‐1 present with short, blunt roots with obliterated pulp chambers. In DD‐2, teeth present with discoloration (brown to blue, amber colored, or opalescent), normal roots but enlarged pulp chambers (thistle tube appearance). The pulp chambers of primary teeth in DD‐2 are almost completely obliterated whereas in permanent teeth, they may be partially obliterated.