title: Compare the effcacy of two commercially available mouthrinses in reducing viable bacterial count in dental aerosol produced during ultrasonic scaling when used as a preprocedural rinse.
abstract: OBJECTIVE
  To evaluate and compare the effcacy of preprocedural mouthrinses (chlorhexidine digluconate and tea tree oil) in reducing microbial content of aerosol product during ultrasonic scaling procedures by viable bacterial count.
  
  
  METHODS
  It was a randomized single blind, placebo-controlled parallel group study.
  
  
  METHODS
  Sixty subjects were randomly assigned to rinse 10 ml of any one of the mouthrinses (chlorhexidine digluconate or tea tree oil or distilled water). Ultrasonic scaling was done for a period of 10 minutes in presence of trypticase soy agar plates placed at standardized distance. Plates were then sent for microbiological evaluation for the aerosol produced.
  
  
  RESULTS
  This study showed that all the antiseptic mouthwashes signifcantly reduced the bacterial colony forming units (CFUs) in aerosol samples. Chlorhexidine rinses were found to be superior to tea tree when used preprocedurally in reducing aerolized bacteria.
  
  
  CONCLUSIONS
  This study advocates preprocedural dural rinsing with an effective antimicrobial mouthrinse during any dental treatment which generates aerosols, reduces the risk of cross-contamination with infectious agents in the dental operatory.
  
  
  CONCLUSIONS
  The aerolization of oral microbes occurring during dental procedures can potentially result in cross-contamination in the dental operatory and transmission of infectious agents to both dental professionals and patient. It is reasonable to assume therefore, that any stratagem for reducing the viable bacterial content of these aerosols could lower the risk of cross-contamination.
authors.affiliation: Assistant Professor, Department of Periodontics, AB Shetty Memorial Institute of Dental Sciences, Nitte University, Mangalore, Karnataka India, Phone: +919901121270, e-mail: shetty.shamila@gmail.com.
authors.forename: Shamila K
authors.initials: SK
authors.lastname: Shetty
authors.affiliation: Professor, Department of Periodontics, AB Shetty Memorial Institute of Dental Sciences, Nitte University, Mangalore, Karnataka, India.
authors.forename: Karanth
authors.initials: K
authors.lastname: Sharath
authors.affiliation: Reader, Department of Periodontics, AB Shetty Memorial Institute of Dental Sciences, Nitte University, Mangalore, Karnataka, India.
authors.forename: Santhosh
authors.initials: S
authors.lastname: Shenoy
authors.affiliation: Assistant Professor, Department of Periodontics, AB Shetty Memorial Institute of Dental Sciences, Nitte University, Mangalore, Karnataka India.
authors.forename: Chandini
authors.initials: C
authors.lastname: Sreekumar
authors.affiliation: Assistant Professor, Department of Periodontics, AJ Institute of Dental Sciences, Mangalore, Karnataka, India.
authors.forename: Rashmi N
authors.initials: RN
authors.lastname: Shetty
authors.affiliation: Professor and Head, Department of Periodontics, AB Shetty Memorial Institute of Dental Sciences, Nitte University, Mangalore, Karnataka India.
authors.forename: Thomas
authors.initials: T
authors.lastname: Biju
mesh_terms: D000328:Adult; D000336:Aerosols; D000391:Air Microbiology; D000393:Air Pollutants; D016902:Air Pollution, Indoor / Q000517:prevention & control*; D000891:Anti-Infective Agents, Local / Q000627:therapeutic use*; D058491:Bacterial Load / Q000187:drug effects*; D002710:Chlorhexidine / Q000031:analogs & derivatives / Q000627:therapeutic use; D012534:Dental Scaling / Q000379:methods*; D006801:Humans; D019552:Infection Control, Dental / Q000379:methods; D050296:Microbial Viability / Q000187:drug effects; D008875:Middle Aged; D009067:Mouthwashes / Q000627:therapeutic use*; D008517:Phytotherapy / Q000379:methods; D010919:Placebos; D016037:Single-Blind Method; D020947:Tea Tree Oil / Q000627:therapeutic use; D016896:Treatment Outcome; D014465:Ultrasonics
chemical_list: D000336:Aerosols; D000393:Air Pollutants; D000891:Anti-Infective Agents, Local; D009067:Mouthwashes; D010919:Placebos; D020947:Tea Tree Oil; C010882:chlorhexidine gluconate; D002710:Chlorhexidine