title: [Clinical analysis on 238 cases of longitudinal fracture of posterior teeth]
abstract: OBJECTIVE:To investigate the characteristics and clinical features of the longitudinal fractures of posterior teeth and evaluate the therapeutic methods.METHODS:The records of 238 cases with the longitudinal fractures of posterior teeth were analyzed retrospectively. The clinical features were sum med up. Eextractions of teeth were performed in 108 patients, and the conservative therapies in 130.RESULTS:The incidence of longitudinal fractures of posterior teeth was highest in the 30-59 years. The rate between male and female was 4:3. The longitudinal fractures of posterior teeth most occurred in the first molar of the maxilla with endodontic treatment. The follow  up peroid was more than 2 years in 83 cases. The success rate was 75/83. CONCLUSION:The longitudinal fractures of posterior teeth can be cured by early fixation, and prevented by avoiding dysfunctional bite, treating subclinical fracture, and using proper methods of treatment of endodontics.
authors.affiliation: Department of Stomatology.Jinghua City Central Hospital. Jinghua 321000, China.
authors.forename: Y C
authors.initials: YC
authors.lastname: Huang