title: Treatment outcome of the teeth with cemental tears.
abstract: BACKGROUND
  A cemental tear is a special type of surface root fracture noted in combination with periodontal and/or periapical bony destruction. We hypothesized that clinical characteristics and treatment techniques may affect the prognosis of teeth with cemental tears.
  
  
  METHODS
  Treatment outcome for the teeth with a cemental tear was assessed in a multicenter cemental tear study project. Of the 71 teeth with cemental tears, 38 teeth (53.5%) were extracted. The remaining 33 teeth (46.5%) were examined for a treatment outcome of healed, questionable, or failed.
  
  
  RESULTS
  Outcome assessment found that 51.5% (17/33), 42.4% (14/33), and 6.1% (2/33) of teeth were classified as healed, questionable, and failed, respectively. Additive bivariate analysis indicated a significant difference between treatment outcome and the length (P = .01) and apicocoronal location (P = .02) of the separated root fragments. Logistic regression analysis found that treatment technique and apicocoronal location of cemental tears may affect the treatment outcome. The percentage of healed cemental tear cases located in the apical, middle, and cervical third of roots was 11.1%, 66.7%, and 60.0%, respectively. By surgical management, 57.7% of cemental tears were healed, whereas only 28.6% cases were healed after nonsurgical treatment.
  
  
  CONCLUSIONS
  Most teeth with cemental tears can be retained to function by nonsurgical and surgical periodontal and endodontic treatment. Clinical diagnosis and treatment of cemental tears should also consider the apicocoronal location and the type of treatment technique to improve outcomes.
authors: Dental Department, Show Chwan Memorial Hospital, Changhua, Taiwan; Graduate Institute of Clinical Dentistry and Department of Dentistry, School of Dentistry, National Taiwan University and National Taiwan University Hospital, Taipei, Taiwan.
authors: Hsueh-Jen
authors: HJ
authors: Lin
authors: Biomedical Science Team, Chang Gung University of Science and Technology, Kwei-Shan, Taoyuan, Taiwan.
authors: Mei-Chi
authors: MC
authors: Chang
authors: Laboratory of Biostatistics, College of Public Health, National Taiwan University, Taipei, Taiwan.
authors: Shu-Hui
authors: SH
authors: Chang
authors: Dental Department, Show Chwan Memorial Hospital, Changhua, Taiwan.
authors: Chen-Tsai
authors: CT
authors: Wu
authors: Graduate Institute of Clinical Dentistry and Department of Dentistry, School of Dentistry, National Taiwan University and National Taiwan University Hospital, Taipei, Taiwan.
authors: Yi-Ling
authors: YL
authors: Tsai
authors: Department of Dentistry, Cardinal Tien Hospital, New Taipei City, Taiwan.
authors: Chih-Chia
authors: CC
authors: Huang
authors: Department of Dentistry, Shin Kong Wu Ho-Su Memorial Hospital, Taipei, Taiwan.
authors: Shu-Fang
authors: SF
authors: Chang
authors: Graduate Institute of Clinical Dentistry and Department of Dentistry, School of Dentistry, National Taiwan University and National Taiwan University Hospital, Taipei, Taiwan.
authors: Ya-Wen
authors: YW
authors: Cheng
authors: Department of Periodontics, Chang Gung Memorial Hospital and Chang Gung University, Taipei, Taiwan. Electronic address: carol@adm.cgmh.org.tw.
authors: Chiu-Po
authors: CP
authors: Chan
authors: Graduate Institute of Clinical Dentistry and Department of Dentistry, School of Dentistry, National Taiwan University and National Taiwan University Hospital, Taipei, Taiwan. Electronic address: jhjeng@ntu.edu.tw.
authors: Jiiang-Huei
authors: JH
authors: Jeng
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D016301:Alveolar Bone Loss / Q000209:etiology; D016025:Bone Transplantation / Q000379:methods; D015331:Cohort Studies; D003646:Debridement / Q000379:methods; D003739:Dental Cementum / Q000293:injuries*; D012534:Dental Scaling / Q000379:methods; D005260:Female; D016557:Guided Tissue Regeneration, Periodontal / Q000379:methods; D006801:Humans; D008297:Male; D008875:Middle Aged; D010483:Periapical Diseases / Q000209:etiology; D010518:Periodontitis / Q000209:etiology; D016745:Root Planing / Q000379:methods; D013524:Surgical Flaps / Q000601:surgery; D019227:Tooth Apex / Q000293:injuries; D019237:Tooth Cervix / Q000293:injuries; D014081:Tooth Extraction / Q000379:methods; D014082:Tooth Fractures / Q000628:therapy*; D014090:Tooth Replantation / Q000379:methods; D014092:Tooth Root / Q000293:injuries*; D016896:Treatment Outcome
keywords: Apical periodontitis; apicocoronal location; cemental tear; periodontitis; predictors of treatment outcome