title: [Effect of manual cleaning and machine cleaning for dental handpiece].
abstract: OBJECTIVE
  Comparing the dental handpiece' s cleaning effect between manual cleaning and machine cleaning.
  
  
  METHODS
  Eighty same contaminated dental handpieces were randomly divided into experimental group and control group, each group contains 40 pieces. The experimental group was treated by full automatic washing machine, and the control group was cleaned manually. The cleaning method was conducted according to the operations process standard, then ATP bioluminescence was used to test the cleaning results.
  
  
  RESULTS
  Average relative light units (RLU) by ATP bioluminescence detection were as follows: Experimental group was 9, control group was 41. The two groups were less than the recommended RLU value provided by the instrument manufacturer (RLU < or = 45). There was significant difference between the two groups (P < 0.05).
  
  
  CONCLUSIONS
  The cleaning quality of the experimental group was better than that of control group. It is recommended that the central sterile supply department should clean dental handpieces by machine to ensure the cleaning effect and maintain the quality.
authors.affiliation: Central Sterile Supply Department, West China Hospital, Sichuan University, Chengdu 610041, China.
authors.forename: Xiaoli
authors.initials: X
authors.lastname: Zhou
authors.forename: Hao
authors.initials: H
authors.lastname: Huang
authors.forename: Xiaoyan
authors.initials: X
authors.lastname: He
authors.forename: Hui
authors.initials: H
authors.lastname: Chen
authors.forename: Xiaoying
authors.initials: X
authors.lastname: Zhou
mesh_terms: D003762:Dental Instruments; D006801:Humans; D011897:Random Allocation; D013242:Sterilization