eng Science and Education Publishing International Journal of Dental Sciences and Research 2333-1259 2020-06-04 8 4 87 90 10.12691/ijdsr-8-4-1 IJDSR2020841 article Hamdy AM Metwaly 1 2 Faraj Alotaiby f.alotaiby@qu.edu.sa 2 Department of Oral Pathology, Faculty of Dentistry, Tanta University, Egypt Dentin dysplasia (DD) is a hereditary malformation of dental tissues affecting the dentin during the process of development. The teeth appear clinically normal; however, radigraphically the pulp morphology is abnormal and may be large or obliterated. The roots are diminutive, blunted, deformed or even absent. Periapical radiolucencies may be present without an apparent cause. The affected teeth may exhibit great mobility and exfoliate early even with minor trauma. In this article, we reported clinical and radiographic findings of a rare case of DD that have radiographic features of both DD- type II and DD type I in a 24 years old male patient visited the Out-Patient Dental Clinic of Qassim University, KSA. http://pubs.sciepub.com/ijdsr/8/4/1/ijdsr-8-4-1.pdf dentin dysplasia hereditary abnormalities