Etiology and pathogenesis of traumatic dental injuries A clinical study of 1,298 cases

TLDR: It appeared from this analysis that the lips may act as an impact absorber reducing the chance of brown fracture and increasing the risk of luxation and alveolar fracture.

Abstract: — The etiology and pathogenesis of traumatic dental injuries were studied on the basis of a hospital material of 1,298 patients (908 males and 390 females). A total number of 3,026 injured teeth were treated, including 787 primary and 2,239 permanent teeth. Repeated dental injuries were found in 24 % of the cases. All traumas were classified according to the type of injury affecting the lips, oral mucosa, tooth-supporting structures, and hard dental tissues. The type of injury seems to be related to the dentition, with traumas predominantly involving the tooth supporting structures in the primary dentition. The origin of trauma was allotted into 9 groups, partly on the basis of a presumed difference in energy of the impact as well as a difference in the resiliency of the impact. A statistical analysis revealed significant differences in the injury pattern between the different trauma groups. The relation between lip injuries and injuries to tooth or tooth-supporting structures was analyzed separately. It appeared from this analysis that the lips may act as an impact absorber reducing the chance of brown fracture and increasing the risk of luxation and alveolar fracture.