Journal of Periodontal and Implant Science

Korean Academy of Periodontology (대한치주과학회)
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The effect of chlorhexidine on reduction of viable organisms in aerosol produced by ultrasonic scaler

클로르헥시딘이 초음파 치석제거기에 의해 발생된 에어로졸 내 세균 수에 미치는 영향

  • Son, Woo-Kyung (Department of Periodontics, The Institute of Oral Health Science, Samsung Medical Center, Sungkyunkwan University School of Medicine) ;
  • Shin, Seung-Yun (Department of Periodontics, The Institute of Oral Health Science, Samsung Medical Center, Sungkyunkwan University School of Medicine) ;
  • Kye, Seung-Beom (Department of Periodontics, The Institute of Oral Health Science, Samsung Medical Center, Sungkyunkwan University School of Medicine) ;
  • Yang, Seung-Min (Department of Periodontics, The Institute of Oral Health Science, Samsung Medical Center, Sungkyunkwan University School of Medicine)
  • 손우경 (성균관대학교 의과대학 삼성서울병원 치과진료부 치주과) ;
  • 신승윤 (성균관대학교 의과대학 삼성서울병원 치과진료부 치주과) ;
  • 계승범 (성균관대학교 의과대학 삼성서울병원 치과진료부 치주과) ;
  • 양승민 (성균관대학교 의과대학 삼성서울병원 치과진료부 치주과)
  • Published : 2009.09.30
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Abstract

Purpose: The aerosol generated by ultrasonic scaler can contain bacteria or virus which can penetrate into body through respiratory systems of dentists, dental hygienist or patients. The aim of this study is to evaluate the effect of chlorhexidine digluconate as preoperative mouthrinse or lavage for ultrasonic scaler on the reduction of viable organisms in aerosol produced during periodontal treatment using ultrasonic scaler. Methods: 30 patients with moderate chronic periodontitis were included and divided into 3 groups: Control (no preoperative mouthrinse and tap water as lavage), CHG (preoperative mouthrinse with 0.1% chlorhexidine digluconate and tap water as lavage), CHL (no preoperative mouthrinse and 0.1% chlorhexidine digluconate as lavage). Each patient received scaling or subgingival curettage for 30 min. In CHG group, mouthrinse with chlorhexidine digluconate was performed for 1 min. before treatment. Before, during and after scaling or subgingival curettage, air sampling was performed for 7 min. each (1000 L/7 min.) with trypticase-soy agar plate. Agar plates were incubated in $37^{\circ}C$ aerobically. The numbers of colony-forming units (CFU) were counted and compared. Results: The numbers of CFUs of the samples obtained during treatment were $97{\pm}14.0$ in control, $73.1{\pm}14.9$ in CHG group and $44.5{\pm}9.0$ in CHL group. The difference among the 3 groups was determined to be statistically significant (one-way ANOVA with Bonferroni's correction, p-value: 0.0003). In contrast, the numbers of CFU of samples obtained before and after treatment were not significantly different among the groups. Conclusions: Chlorhexidine digluconate used as preoperative mouthrinse or lavage for ultrasonic scaler can reduce the microorganisms in aerosol produced during periodontal treatment using ultrasonic scaler. Less number of microorganisms were detected when chlorhexidine was used as lavage for ultrasonic scaler.

Keywords

References

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