A Study Practice of Infection Control for Dental Office and Dental Hygienist and Bacterial Contamination of Dental Office Surface

치과 의료기관 및 치과위생사의 감염관리 실천도와 진료실내의 표면 세균오염도에 대한 연구

  • Received : 2019.03.07
  • Accepted : 2019.04.22
  • Published : 2019.05.28


The purpose of this study was to investigate the status of infection control in dental office and the degree of infection control practice of dental hygienists. A self-reported questionnaire was answered by 193 dental hygienists working in dental hospitals or dental clinics in Gyeonggi and Incheon areas. The number of bacteria was measured sample of surface dental unit chair shoulder backrests and light handles from 19 dental hospitals and 28 dental clinics. It was responded that impression or occlusion bodies were routinely disinfected in 52.6% of the dental hospitals and dental prosthesis were routinely disinfected in 46.4% in dental clinics. The dental hospital and clinics disinfect the surface each 26.3%, 25% after the patient treatment. The dental hospital and clinic were detected bacteria $5.02^*10\^3CFU/mL$, $1^*10\^4CFU/mL$, from dental unit chair backrest, respectively and $8.32^*10\^3CFU/mL$, $4.26^*10\^4CFU/mL$ from light handles, respectively. At the conclusion of this investigation, it can be kept from infection source in dental office is to make the right selection and use of the personal protective equipments and to improve the practice level by regular and active education. The same infection control practice should be done by institutionalizing and mandating infection control practice.


Infection Control;Practice of Infection Control;Dental Hospital;Dental Clinic;Dental Hygienist

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Fig. 1. 본 연구의 흐름도

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Fig. 2. Bacterial contamination levels of surface indental offices

Table 1. The general characteristics of the dental hygienists

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Table 2. Disinfection of dental impression materials and prostheses

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Table 3. Disinfection of dental chair surface and dental waterlines

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Table 4. Practice of infection control for dental hygienist

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Table 5. A degree of infection control practice according to dental career

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Table 6. Influence factors to the degree of infection control practice of dental hygienist

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