title: Microbial contamination of removable dental prosthesis at different interval of usage: Anin vitrostudy.
abstract: BACKGROUND
  Loss of teeth affects the individual's health. Many factors determine the need to wear a removable dental prosthesis. Due to nature of design, age and lack of awareness, prosthesis often are neglected to maintain in an aseptic condition leading to microbial contamination. This provided an impetus for the present study with the aim of determining the microbial contamination of removable dental prosthesis.
  
  
  METHODS
  Total, 45 patients wearing removable dental prosthesis were randomly selected. Patients were divided into three groups as per duration of usage since 1 month, 6 month and ≥1 year. Sterile cotton swab moistened with phosphate buffer saline (PBS) was used to collect swab from the fitting areas of prosthesis. Swab samples was inserted immediately into the sterile tube containing 1 ml of PBS solution, 10 μl PBS is inoculated on the blood agar and MacConkey agar plates using spread plate technique. Samples were cultured and incubated at 37°C for 48 h. Calibrated microbiologist isolated, identified and counted microorganisms using colony counter. Depending on the nature of data, statistical analysis was done applying Kruskal-Wallis test, Mann-Whitney U-test and Chi-square test.
  
  
  RESULTS
  Streptococcus species and Staphylococcus aureus were the common microorganisms isolated in all three groups and was statistically significant atP<0.05. Candida albicans, Diptheroid, Escherichia coli, Micrococcus species were isolated from Group II and Group III.
  
  
  CONCLUSIONS
  There is a linear increase in microbial contamination of removable dental prosthesis as the duration of usage increases and might increase the susceptibility of individuals' to many diseases.
authors.affiliation: Department of Public Health Dentistry, ACPM Dental College and Hospital, Dhule, Maharashtra, India.
authors.forename: Vijita Vijay
authors.initials: VV
authors.lastname: Nair
authors.affiliation: Department of Public Health Dentistry, ACPM Dental College and Hospital, Dhule, Maharashtra, India.
authors.forename: G N
authors.initials: GN
authors.lastname: Karibasappa
authors.affiliation: Department of Public Health Dentistry, ACPM Dental College and Hospital, Dhule, Maharashtra, India.
authors.forename: Arun
authors.initials: A
authors.lastname: Dodamani
authors.affiliation: Department of Public Health Dentistry, ACPM Dental College and Hospital, Dhule, Maharashtra, India.
authors.forename: V K
authors.initials: VK
authors.lastname: Prashanth
keywords: Denture; microbial contamination; removable dental prosthesis