el-Hadary, M E A study of the incidence and distribution of root surface caries and its relation to periodontal disease. [electronic resource] - Egyptian dental journal Apr 1975 - 43-52 p. digital Publication Type: Journal Article ISSN: 0070-9484 Subjects--Topical Terms: AdultDental Caries--epidemiologyFemaleHumansMaleMiddle AgedPeriodontal Diseases--complicationsTooth Root--pathology