Microbiological assessment of aerosol generated during debond of fixed orthodontic appliances

Michael Dawson, Valeria Soro, David Dymock, R. Price, Helen Griffiths, Tom Dudding, Jonathan R. Sandy, Anthony J. Ireland

Research output: Contribution to journalArticle (Academic Journal)peer-review

11 Citations (Scopus)
576 Downloads (Pure)

Abstract

Introduction

The aims of this study were to describe bacterial load and diversity of the aerosol created during enamel cleanup after the removal of fixed orthodontic appliances and to assess the effect of a preprocedural mouth rinse.

Methods

The study involved the sampling of ambient air adjacent to the patient's mouth during adhesive removal using a slow-speed handpiece and a spiral fluted tungsten carbide bur without water irrigation. Sampling was carried out during enamel cleanup with or without a preprocedural mouth rinse of either sterile water or chlorhexidine. Airborne particles were collected using a viable inertial impactor simulating the human respiratory tree. The bacteria collected were analyzed using both culture and molecular techniques.

Results

Bacteria produced during debond and enamel cleanup can reach all levels of the respiratory tree. The use of a preprocedural mouth rinse, either sterile water or chlorhexidine, increased the numbers and diversity of the bacteria in the air.

Conclusions

When using a slow-speed handpiece and a spiral fluted tungsten carbide bur for enamel cleanup after orthodontic treatment, the bacterial load and diversity of the aerosol produced are lower when a preprocedural mouth rinse is not used.
Original languageEnglish
Pages (from-to)831-838
Number of pages8
JournalAmerican Journal of Orthodontics and Dentofacial Orthopedics
Volume150
Issue number5
Early online date27 Oct 2016
DOIs
Publication statusPublished - Nov 2016

Keywords

  • bio aerosol
  • particles
  • dental

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