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. 2018 Sep 3;10(3):26. doi: 10.1038/s41368-018-0027-9

Fig. 2.

Fig. 2

Dental phenotype and panoramic radiograph of the patients. a Normal permanent teeth; b panoramic radiograph of normal teeth. Dental phenotype of IV:9 c,eh. An intraoral view of a male patient at the age of 21 shows brown crowns with thin and chipping enamel, especially in the cervical part of all teeth (black arrows), and short crowns of the permanent maxillary central incisors worn out by attrition (black arrow). d,j,l Panoramic radiographs of patients show bulbous crowns covered with thin enamel, cervical constriction (asterisk), short constricted roots, and apical radiolucencies in the second molars (white arrows). i An intraoral view of a patient at the age of 22 shows grey crowns with enamel chipped and absent in places. k,m Above the age of approximately 40, patients had lost almost all of their teeth or had several loose roots. l,n Patients were treated by long-span fixed partial denture repair, l implant prosthodontics, k removable partial denture, or o removable complete denture according to their family economic situation. Finally, o,p all patients lost all their teeth at an early age (generally by their 50s).