title: Vertical crown-root fracture of the mandibular first primary molar in a one-year-old child.
abstract: A vertical crown-root fracture of the mandibular first primary molar in a 21-month-old child is presented. The mandibular primary first molar was fractured vertically and split into 2 pieces. The tooth fracture had not been noticed for about 5 months after the accident, and the tooth was left without any treatment. The pulp tissue of the mesial root maintained its vitality, but the distal root was nonvital.
authors.forename: I
authors.initials: I
authors.lastname: Morisaki
authors.forename: K
authors.initials: K
authors.lastname: Kitamura
authors.forename: T
authors.initials: T
authors.lastname: Ooshima
authors.forename: S
authors.initials: S
authors.lastname: Sobue
mesh_terms: D006801:Humans; D007223:Infant; D008297:Male; D008963:Molar; D014082:Tooth Fractures; D014094:Tooth, Deciduous