Clinical Efficacy of Latex Cover for Dental Handpiece

치과 핸드피스용 감염방지구의 임상적 효용성

  • Lee, Ki-Ho (Dept. of Oral Medicine, School of Dentistry, Dankook University) ;
  • Paek, Dong-Heon (Dept. of Oral Microbiology, School of Dentistry, Dankook University)
  • 이기호 (단국대학교 치과대학 구강내과학교실) ;
  • 백동헌 (단국대학교 치과대학 구강미생물학교실)
  • Published : 2009.09.30

Abstract

The purpose of this study was to investigate the clinical efficacy of latex cover developed for dental handpiece on contamination of microorganisms during dental treatment and to determine whether it can be an alternative to conventional sterilization such as autoclaving. E. fecaelis was used as a experimental microorganism instead of oral flora. Experimental bowl with 2 cm of rectangular cavity was fabricated for handpiece operating instead of oral cavity. Latex covers ($Orokeeper^{(R)}$, Orobiotech Co., Korea) and several handpieces were used after sterilization by autoclave. Four experiments were performed to evaluate bacterial contamination related with (1) various parts of dental handpiece, (2) swabbing time with alcohol sponge, (3) postoperative air-water spraying time and (4) consecutive use of latex covers without autoclaving. The results show that face of handpiece uncovered with latex cover was severely contaminated than the covered area and that most bacteria were removed by swabbing face and head area of dental hand-piece and by air-water spraying more than 15 seconds nearly up to the level of sterilization. Conclusively it can be suggested that use of latex cover for handpiece during dental procedure, swabbing with alcohol sponge is air-water spraying for more than 15 seconds after use of dental handpiece should be very useful and practical for prevention of cross infection and should be an alternative method for the sterilization of dental handpiece under some difficult situations not being able to sterilize a handpiece with autoclave.

본 연구의 목적은 치과 치료 시 라텍스 감염방지구가 핸드피스의 오염을 방지하고 고압 멸 균 소독과 같은 전통적 소독을 대신하는 방법이 될 수 있는 지 조사하는 것이다. 구강 내 상주균 대신 사용한 균주는 E. fecaelis (ATCC 29212) 이며 구강을 대신하는 2cm 의 정방형 cavity 가 형성된 실험용 bowl 을 제작하였다. 라텍스 재질의 덮개는 $Orokeeper^{(R)}$ (Orobiotech Co., Korea)를 사용하였으며 모든 실험 핸드피스는 고압멸균소독기에서 멸균 후 사용하였다. 4가지 실험으로 이루어 졌다 : 핸드 피스의 다양한 부위에 대한 세균 오염 평가, 알코올 소독솜으로 핸드피스의 전면 및 헤드부 에 소독 후 소독시간에 따른 세균오염 평가, 핸드피스 사용 후 air-water spray 시간에 따른 핸드 피스의 전면 및 헤드부에 대한 세균오염 평가, 라텍스 덮개의 반복 사용에 따른 핸드피스의 오염도에 대한 평가 등이다. 실험결과 라텍스 감염방지구로 덮여진 부분과 비교할 때 덮여져 있지 않은 부위의 오염 도가 매우 심하였다. 그러나 핸드피스 사용 후 15초간 알코올 솜으로 닦아내거나, 15초간 기수분사를 한 후에는 소독 수준 까지 균이 감소하였다. 결론적으로 오로 키퍼 같은 라텍스 감염방지구는 15초간의 알코올 세척 또는 사용 후 15초 기수분사와 함께 사용하면 멸균 소독을 할 수 없는 어려운 상황에서 교차감염 방지를 목적으로 사용이 가능하리라 사료된다.

Keywords

References

  1. Council on Dental Materials, Instruments, and Equipment., Council on Dental Practice., Council on Dental Therapeutics. Infection control of recommendations for the dental office and the dental laboratory. JADA 1988;241-248 https://doi.org/10.14219/jada.archive.1988.0341
  2. Micik RE, Miller RL, Malzarella MA, Ryge G. Studies on dental aerobiology : I Bacterial aerosols generated during dental procedures. J Dent Res 1969;48:49 https://doi.org/10.1177/00220345690480012401
  3. Park OH. Study on the isolation of bacteria from door knobs of hospital. The Korean Central Journal of Medicine 1973:25:637-640
  4. Hemming VG, Overall JC Jr, Britt MR. Nosocomial infections in a newborn intensive-care unit. Results of forty-one months of surveillance. N Engl J Med 1976;10:1310-1316
  5. Shooter RA, Gava H, Cooke EM et al. Food and medications as possible sources of hospital strains of Pseudomonas aeruginosa. Lancet 1969;21:1227-1229
  6. Jolanta. Dental bioaerosol as an occupational hazard in a dentist's workplace, Ann Agric Enciron Med 2007;14:203-207
  7. Bentley CD, Burkhart NW, Crawford JJ. Evaluating spatter and aerosol contamination during dental procedures. JADA 1994;125:579-584 https://doi.org/10.14219/jada.archive.1994.0093
  8. Nogler M, Lass-Florl C, Wimmer C et al. Aerosols produced by high-speed cutters in cervical spine surgery : extent of environmental contamination. Eur Spine 2001;10:274-277 https://doi.org/10.1007/s005860100310
  9. Gordon BL, Burke FJ, Bagg J, Marlborough HS, McHugh ESl. Systematic review of adherence to infection control guidelines in dentistry. J Dent 2001;29:509-516 https://doi.org/10.1016/S0300-5712(01)00043-4
  10. Gundermann KO. Spread of microorganisms by air conditioning systems-especially in hospitals. Ann NY Acad Sci 1980;353:209-217 https://doi.org/10.1111/j.1749-6632.1980.tb18924.x
  11. http://www.bda.org/dentists/advice/practicemgt/ health-safety/Infection-control/personalprotection/aerosol-saliva-blood-splatter.aspx
  12. Worthington L, Martin MV. An investigation of the effect of repeated autoclaving on the speed of some dental turbines in general dental practice. J Dent 1998;26:75-77 https://doi.org/10.1016/S0300-5712(96)00073-5
  13. Hayes J. Extend the life of your handpiece ; Maintenance and sterilization tips. Dental Assist 2005;74(6):10-11
  14. http://www.ada.org/prof/resources/topics/waterlines/art_cleaning_waterlines
  15. Lewis DL, Boe RK. Cross infection risks associated with current procedures for using high speed dental handpieces. J Clin Microbiol 1992;30:401-406
  16. Guidelines for Infection Control in Dental Health Care Settings, 2003. MMWR, December 19, 2003:52(RR-17)
  17. 치과 진료 감염 방지 기준. 2006. 보건복지부
  18. Peter R. Wood. Cross Infection Control in Dentistry. 1992, Wolfe Publishing Ltd., pp. 103-125
  19. Robert A. How well does the chemiclave sterilize handpieces? JADA 1998;129:985-991 https://doi.org/10.14219/jada.archive.1998.0352
  20. Clinical Research Associates, Newsletter. Handpieces, sterilization disinfection. Oral Health 1988;78:29-32
  21. Lee BM, Kim CH, Kim YS. A study on the microbial contamination of dental unit and ultrasonic scaler. The J Korean Academy of Prosthodontics 1998;36:64-80