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Three-rooted mandibular molars in patients of Mongolian, Caucasian and Negro origin
1Faculdade de Odontologia de Ribeirão Preto, Universidade de São Paulo, Brazil.
Brazilian Dental Journal
|January 1, 1993
Abstract:
A total of 328 periapical x-rays from 105 patients of Mongolian origin, 106 of Negro origin and 117 of Caucasian origin were studied. The Mongolian race showed a greater incidence of three-rooted mandibular molars (15.2% of the Mongolian patients, 7.5% of the Negro patients and 6.8 of the Caucasian patients). There was no statistical difference in relation to sex and the incidence of this extra root.

