Subgingival plaque removal at interdental sites using a low-abrasive air polishing powder

J Periodontol. 2003 Mar;74(3):307-11. doi: 10.1902/jop.2003.74.3.307.


Background: The aim of the study was to test the efficacy of a novel low-abrasive air polishing powder in subgingival plaque removal at interdental sites during periodontal maintenance therapy (PMT).

Methods: Using a split mouth design, subgingival plaque was removed in 23 PMT patients using a low abrasive powder using a standard air polishing unit (test) or curets (positive control). Before and immediately after treatment, subgingival plaque samples were taken from interdental sites with 3 to 5 mm probing depth (PD) at 2 test teeth and 2 positive control teeth. To evaluate the influence of sampling on the microflora, plaque samples were also taken twice at 2 teeth without therapy with PD of 3 to 5 mm (negative control). PMT treatment and plaque sampling were repeated 3 times at quarterly intervals. Anaerobe cultivation was utilized to assess the mean reduction of total colony forming units (CFU) immediately after treatment.

Results: Test treatment resulted in a significantly greater reduction in subgingival bacterial counts (log 1.9 +/- 0.7) than positive control treatment (log 1.1 +/- 0.6) and subgingival plaque sampling alone (log 0.5 +/- 0.5; P < 0.05). Differences between positive and negative control were not significant (P < 0.05).

Conclusion: The novel low-abrasive air polishing powder is superior to curets in removing subgingival plaque at interdental sites with up to 5 mm probing depth in PMT.

Publication types

  • Clinical Trial
  • Randomized Controlled Trial

MeSH terms

  • Adolescent
  • Adult
  • Aged
  • Air
  • Bacteria, Anaerobic / growth & development
  • Colony Count, Microbial
  • Dental Plaque / microbiology
  • Dental Plaque / therapy*
  • Dental Scaling / instrumentation*
  • Female
  • Follow-Up Studies
  • Humans
  • Male
  • Middle Aged
  • Periodontal Pocket / prevention & control
  • Powders
  • Statistics, Nonparametric
  • Subgingival Curettage / instrumentation


  • Powders