title: Effects of single-visit full-mouth ultrasonic debridement versus quadrant-wise ultrasonic debridement.
abstract: BACKGROUND
  The aim of this randomized controlled clinical trial was to determine the effects of single-visit full-mouth ultrasonic debridement versus quadrant-wise therapy.
  
  
  METHODS
  Thirty-six subjects with chronic periodontitis, were randomly allocated to three groups--quadrant-wise ultrasonic debridement, single-visit full-mouth ultrasonic debridement with povidone iodine and single-visit full-mouth ultrasonic debridement with water. Whole-mouth plaque, bleeding on probing (BOP), pocket depth and attachment level were recorded before treatment and 1, 3 and 6 months post-treatment. Plaque and saliva samples were collected for microbiological analysis.
  
  
  RESULTS
  After treatment, all groups showed significant improvement in clinical parameters. Full-mouth treatments resulted in similar improvements in full-mouth mean plaque percentage, probing pocket depth and probing attachment level as conventional therapy. When data were analysed based on pocket depth and tooth type, there was no difference between groups in probing depth reduction or attachment gains. The full-mouth groups demonstrated greater reduction in BOP% and number of pockets > or =5 mm and the total treatment time was significantly shorter. The detection frequencies of periodontal pathogens in plaque and saliva showed slight changes with no difference between groups.
  
  
  CONCLUSIONS
  Single-visit full-mouth mechanical debridement may have limited additional benefits over quadrant-wise therapy in the treatment of periodontitis, but can be completed in a shorter time.
authors.affiliation: Periodontology, Department of Hard Tissue Engineering, Tokyo Medical and Dental University, Tokyo 113-8549, Japan. geena.peri@tmd.ac.jp
authors.forename: Geena
authors.initials: G
authors.lastname: Koshy
authors.forename: Yoko
authors.initials: Y
authors.lastname: Kawashima
authors.forename: Makoto
authors.initials: M
authors.lastname: Kiji
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Nitta
authors.forename: Makoto
authors.initials: M
authors.lastname: Umeda
authors.forename: Toshiyuki
authors.initials: T
authors.lastname: Nagasawa
authors.forename: Isao
authors.initials: I
authors.lastname: Ishikawa
mesh_terms: D000328:Adult; D000368:Aged; D000704:Analysis of Variance; D000891:Anti-Infective Agents, Local / Q000627:therapeutic use; D002908:Chronic Disease; D004269:DNA, Bacterial / Q000032:analysis; D003773:Dental Plaque / Q000382:microbiology / Q000628:therapy; D012534:Dental Scaling / Q000379:methods*; D017050:Episode of Care; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D017060:Patient Satisfaction; D010512:Periodontal Index; D010518:Periodontitis / Q000628:therapy*; D011206:Povidone-Iodine / Q000627:therapeutic use; D012463:Saliva / Q000382:microbiology; D018709:Statistics, Nonparametric; D013997:Time Factors; D016896:Treatment Outcome; D014464:Ultrasonic Therapy
chemical_list: D000891:Anti-Infective Agents, Local; D004269:DNA, Bacterial; D011206:Povidone-Iodine