title: Effect of occlusal trauma on healing of periapical pathoses: report of two cases.
abstract: OBJECTIVE
  To present two clinical cases and demonstrate that occlusal trauma may affect healing of periapical pathoses.
  
  
  CONCLUSIONS
  Two teeth with periradicular disease did not respond successfully to conventional root canal treatment or endodontic surgery. Occlusal adjustment was finally performed on both cases. After occlusal adjustment, uncomplicated healing and periapical repair occurred in both cases. The findings in these two cases suggest that occlusal trauma may play a role in the healing of periapical pathoses.
  
  
  CONCLUSIONS
  Occlusal trauma is positively correlated with changes in periodontal tissues. Although experiments in animals have shown that application of forces to teeth will not induce further periodontal destruction, we believe that some failures of root canal treatment may be due to the presence of occlusal trauma modulating the responses of inflamed periapical tissues or apical pathoses with persistent infection.
authors.affiliation: Dental Department, National Cheng Kung University Hospital, Tainan, Taiwan ROC. vivian@mail.ncku.edu.tw
authors.forename: W M
authors.initials: WM
authors.lastname: Harn
authors.forename: M C
authors.initials: MC
authors.lastname: Chen
authors.forename: Y H
authors.initials: YH
authors.lastname: Chen
authors.forename: J W
authors.initials: JW
authors.lastname: Liu
authors.forename: C H
authors.initials: CH
authors.lastname: Chung
mesh_terms: D000328:Adult; D002012:Bruxism / Q000150:complications / Q000628:therapy; D003751:Dental Fistula / Q000503:physiopathology / Q000628:therapy; D003769:Dental Occlusion, Traumatic / Q000150:complications* / Q000628:therapy; D003790:Dental Pulp Necrosis / Q000628:therapy; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007180:Incisor / Q000473:pathology; D019558:Occlusal Adjustment; D010482:Periapical Abscess / Q000503:physiopathology / Q000628:therapy; D010483:Periapical Diseases / Q000503:physiopathology / Q000628:therapy*; D010516:Periodontal Splints; D012184:Retrograde Obturation; D012390:Root Canal Therapy; D016896:Treatment Outcome; D014945:Wound Healing / Q000502:physiology