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An atypical tooth fracture due to an indirect trauma mechanism
Author(s) -
Oikarinen Kyösti
Publication year - 1987
Publication title -
dental traumatology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.82
H-Index - 81
eISSN - 1600-9657
pISSN - 1600-4469
DOI - 10.1111/j.1600-9657.1987.tb00617.x
Subject(s) - premolar , crown (dentistry) , chin , dentistry , orthodontics , tooth fracture , mechanism (biology) , fracture (geology) , dental trauma , medicine , geology , anatomy , molar , geotechnical engineering , philosophy , epistemology
This report presents a crown‐root fracture of a lower premolar due to an indirect trauma mechanism. Violent closure of the teeth was caused when the patient hit his chin on hard ground after a fall from a bicycle. The fact that a lower premolar was injured is suggested to be due to the tooth involved having had abnormal anatomy of the root. Angulation in the root configuration makes the tooth act like an ankylotic one, which means decreased capacity to resist sudden occlusal forces.