title: Short-term evaluation of intentional replantation of vertically fractured roots reconstructed with dentin-bonded resin.
abstract: The purpose of this study was to evaluate intentional replantation of vertically fractured roots reconstructed with dentin-bonded resin. Twenty vertically fractured teeth were extracted intentionally and reconstructed with 4-META/MMA-TBB dentin-bonded resin. After reconstruction, the teeth were replanted into the original sockets. The replanted teeth were evaluated by clinical criteria and radiographic examination. The observation periods ranged between 4 and 45 months. Longevity was calculated by the Kaplan-Meier method, and factors that had significant influence on the longevity were analyzed with the Log rank test at a 95% level of confidence. From this short-term observation, 14 of 20 cases were functioned in the oral environment. Of these 14 cases, 6 could be considered truly successful and 8 cases needed further observation. The other six cases were total failures and were extracted. The longevity was calculated as 83.3% at 12 months and 36.3% at 24 months. Teeth with thin roots or with longitudinal fractures extending over 2/3 of the root from the cervical portion toward the apex showed significantly lower longevity. It was concluded that this method had the potential to preserve vertically fractured teeth.
authors.affiliation: Department of Restorative Dentistry and Endodontology, Osaka University Graduate School of Dentistry, Japan.
authors.forename: Mikako
authors.initials: M
authors.lastname: Hayashi
authors.forename: Yoshifumi
authors.initials: Y
authors.lastname: Kinomoto
authors.forename: Masabumi
authors.initials: M
authors.lastname: Miura
authors.forename: Ikuko
authors.initials: I
authors.lastname: Sato
authors.forename: Fumio
authors.initials: F
authors.lastname: Takeshige
authors.forename: Shigeyuki
authors.initials: S
authors.lastname: Ebisu
mesh_terms: D000180:Acrylic Resins / Q000627:therapeutic use*; D000328:Adult; D000368:Aged; D019232:Dental Restoration Failure; D003793:Dental Restoration, Permanent / Q000379:methods*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D016016:Proportional Hazards Models; D019279:Resin Cements / Q000627:therapeutic use*; D016019:Survival Analysis; D014081:Tooth Extraction; D014082:Tooth Fractures / Q000601:surgery*; D014090:Tooth Replantation; D016896:Treatment Outcome
chemical_list: D000180:Acrylic Resins; D019279:Resin Cements; C031172:4-META resin