title: [Effects of bio-glass in subgingival scaling and root planing].
abstract: OBJECTIVE
  To evaluate the effect of locally applied bio-glass on the teeth hypersentivity and periodontal recovery after subgingival scaling and root planing.
  
  
  METHODS
  In this double blind study, 60 patients with chronic periodontitis were included and were randomly divided into four groups of 15 patients: bio-glass powder and bio-glass paste group (Po+Pa), bio-glass powder group (Po), bio-glass paste group (Pa) and control group. Powder was applied in pockets after subgingival scaling and root planning (SRP) and paste was used as toothpaste for 6 weeks. Periodontal indices and the severity of tooth hypersensitivity were recorded.
  
  
  RESULTS
  Obvious mitigation of tooth hypersensitivity was observed in bio-glass powder or paste applied patients within the fist three weeks after SRP. Only few patients presented teeth hypersensitivity in the 6th week after SRP. In the 6th week after SRP, bleeding index significantly decreased in bio-glass powder or paste applied patients. More pocket depth and clinical attachment level reduction was found in bio-glass powder applied patients. Application of bio-glass powder or paste improved clinical attachment level in the 3rd month after SRP.
  
  
  CONCLUSIONS
  The hypersensitivity after subgingival scaling could be relieved without any treatment in 6 weeks, while the bio-glass powder and the 7% bio-glass paste could reduce the prevalence and the severity of it. Further more, bio-glass also improved the clinical outcomes of subgingival scaling via its bacteriostatic action.
authors.affiliation: Department of Periodontology, Peking University School and Hospital of Stomatology, Beijing 100081, China.
authors.forename: Xiao qian
authors.initials: Xq
authors.lastname: Yu
authors.forename: Yue bang
authors.initials: Yb
authors.lastname: An
authors.forename: Qing xian
authors.initials: Qx
authors.lastname: Luan
mesh_terms: D000328:Adult; D001672:Biocompatible Materials / Q000627:therapeutic use; D002516:Ceramics / Q000627:therapeutic use*; D055113:Chronic Periodontitis / Q000628:therapy*; D012534:Dental Scaling / Q000379:methods*; D003807:Dentin Sensitivity / Q000628:therapy; D004311:Double-Blind Method; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D016745:Root Planing / Q000379:methods*; D055815:Young Adult
chemical_list: D001672:Biocompatible Materials; C022107:Bioglass