title: [Clinical effect of the restoration for pathological tooth wear].
abstract: OBJECTIVE
  To investigate the effect of the restoration for pathological tooth wear.
  
  
  METHODS
  A total of 48 pathological weared premolars and molars with restorable space in occlusal surface in 10 patients were restored by composite resins. The patients' masticatory function (biting force, masticatory efficiency, the surface electromyographic (EMG) activity of masseter muscles and anterior temporalis) were compared before and after the treatment. At the same time, the restorations were evaluated according to the modified the United States Public Health Service (USPHS) criterion.
  
  
  RESULTS
  After the treatment, patients' clinical syndrome disappeared, the biting force was improved (P < 0.05) and the masticatory efficiency was increased significantly (P < 0.01). EMG activity, the asymmetry index and the action index of the tested muscles during different status had no significant change (P > 0.05). The composite resin restorations of the 48 teeth were all evaluated as A after three month and one year.
  
  
  CONCLUSIONS
  Restoring the pathological weared posterior teeth with composite resins is an effective treatment to relieve the patients' syndrome, improve their masticatory efficiency and biting force.
authors.affiliation: Department of General Dentistry, Peking University School and Hospital of Stomatology, Beijing 100081, China.
authors.forename: Jie
authors.initials: J
authors.lastname: Pan
authors.forename: Jia-de
authors.initials: JD
authors.lastname: Wang
authors.forename: Zhao-hui
authors.initials: ZH
authors.lastname: Yang
mesh_terms: D000368:Aged; D001732:Bite Force; D003188:Composite Resins / Q000627:therapeutic use*; D005260:Female; D006801:Humans; D008297:Male; D008409:Mastication; D008875:Middle Aged; D008963:Molar / Q000473:pathology* / Q000503:physiopathology; D019217:Tooth Attrition / Q000503:physiopathology / Q000628:therapy*; D016896:Treatment Outcome
chemical_list: D003188:Composite Resins