Treatment of peri-implantitis using an Er:YAG laser or an air-abrasive device: a randomized clinical trial

J Clin Periodontol. 2011 Jan;38(1):65-73. doi: 10.1111/j.1600-051X.2010.01646.x. Epub 2010 Nov 22.


Background: Non-surgical peri-implantitis therapies appear to be ineffective. Limited data suggest that ER:YAG laser therapy improves clinical conditions. The present study aimed at comparing the treatment effects between air-abrasive (AM) and Er:YAG laser (LM) mono-therapy in cases with severe peri-implantitis.

Materials and methods: Twenty-one subjects in each group were randomly assigned to one time intervention by an air-abrasive device or an Er:YAG laser. Clinical data were collected before treatment and at 6 months. Data analysis was performed using repeat univariate analysis of variance controlling for subject factors.

Results: No baseline subject characteristic differences were found. Bleeding on probing and suppuration decreased in both the groups (p<0.001). The mean probing depth (PPD) reductions in the AM and LM groups were 0.9 mm (SD 0.8) and 0.8 mm (SD ± 0.5), with mean bone-level changes (loss) of -0.1 mm (SD ± 0.8) and -0.3 mm (SD ± 0.9), respectively (NS). A positive treatment outcome, PPD reduction ≥0.5 mm and gain or no loss of bone were found in 47% and 44% in the AM and LM groups, respectively.

Conclusions: The clinical treatment results were limited and similar between the two methods compared with those in cases with severe peri-implantitis.

Publication types

  • Randomized Controlled Trial
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Aged
  • Air Abrasion, Dental / instrumentation*
  • Alveolar Bone Loss / diagnostic imaging
  • Alveolar Bone Loss / therapy
  • Analysis of Variance
  • Chi-Square Distribution
  • Dental Implants / microbiology
  • Dental Plaque / therapy
  • Female
  • Humans
  • Lasers, Solid-State / therapeutic use*
  • Male
  • Middle Aged
  • Peri-Implantitis / surgery
  • Peri-Implantitis / therapy*
  • Periodontal Debridement / instrumentation*
  • Periodontal Debridement / methods*
  • Periodontal Index
  • Prosthesis-Related Infections / surgery
  • Prosthesis-Related Infections / therapy
  • Radiography
  • Single-Blind Method
  • Statistics, Nonparametric
  • Treatment Outcome


  • Dental Implants