title: Subgingival plaque removal in buccal and lingual sites using a novel low abrasive air-polishing powder.
abstract: OBJECTIVE
  This study was aimed at assessing the efficacy of subgingival plaque removal in buccal and lingual sites during supportive periodontal therapy (SPT) using a novel low abrasive air-polishing powder.
  
  
  METHODS
  In 27 SPT patients, subgingival debridement was performed using the novel air-polishing powder (test) and hand instruments (positive control) in a randomized split mouth design. Before and immediately after treatment, subgingival plaque samples were taken from two teeth with pockets of 3-5 mm depth in both groups. To assess the influence of plaque sampling on the microflora, samples were also taken twice from two untreated teeth (negative control). The mean reduction in total colony forming units (CFU) was assessed by anaerobic culture. The patients' perception of treatment was assessed by a visual analog score (VAS). Therapy and plaque sampling were repeated after a 3-month interval.
  
  
  RESULTS
  Test treatment resulted in a significantly greater reduction in mean CFU than positive control treatment (log 1.7+/-0.98 and log 0.61+/-0.79 respectively; p<0.05). Following both treatments, the CFU reduction was significantly greater compared to negative control treatment (log 0.06+/-0.49; p<0.05). In addition, test treatment was perceived as significantly more pleasant than hand instrumentation (p<0.05).
  
  
  CONCLUSIONS
  The novel low abrasive air-polishing powder is superior to curettes in removing subgingival plaque from pockets of 3-5 mm depth in supportive periodontal therapy and offers greater patient comfort.
authors.affiliation: Department of Periodontology, University of Münster, Waldeyerstrasse 30, 48149 Münster, Germany. peterslk@uni-muenster.de
authors.forename: G J
authors.initials: GJ
authors.lastname: Petersilka
authors.forename: D
authors.initials: D
authors.lastname: Steinmann
authors.forename: I
authors.initials: I
authors.lastname: Häberlein
authors.forename: A
authors.initials: A
authors.lastname: Heinecke
authors.forename: T F
authors.initials: TF
authors.lastname: Flemmig
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000388:Air; D001421:Bacteria, Anaerobic / Q000254:growth & development; D002908:Chronic Disease; D015169:Colony Count, Microbial; D003773:Dental Plaque / Q000382:microbiology / Q000628:therapy*; D003777:Dental Prophylaxis / Q000295:instrumentation*; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D016014:Linear Models; D008297:Male; D008875:Middle Aged; D017060:Patient Satisfaction; D010514:Periodontal Pocket / Q000517:prevention & control; D010518:Periodontitis / Q000517:prevention & control; D011208:Powders; D018709:Statistics, Nonparametric; D013357:Subgingival Curettage / Q000295:instrumentation*; D016896:Treatment Outcome
chemical_list: D011208:Powders