Dr Srikanthan Sriram1, Dr Parangimalai Diwakar Madankumar1

1Ragas Dental College And Hospital, Chennai, India

INTRODUCTION: Mobile phones have become an inevitable mode of communication. Dental office and the dental operators along with their personal equipment (mobile phones) are exposed to numerous pathogens as a part of their profession,. This study aimed at assessing the effectiveness of isopropyl alcohol and a customized Ultaviolet chamber , in decontamination of mobile phones used in dental health care setting.

METHODS: A cross sectional study was carried out on 30 touch screen mobile phones belonging to dental professionals in a college setting. Swabs were collected along the screen, camera lens and on/off buttons of mobile phones . Swabs were streaked onto nutrient agar and incubated at 37°C for twenty four hours for assessment of microbial load before and after the disinfection procedures. The disinfection process was performed using 70% isopropyl alcohol and a customized Ultra Violet chamber . Mann Whitney- U test and  Wilcoxon Signed Ranks Test were used to compare the values between groups and within each group respectively

RESULTS: There was a statistically significant reduction in the mean number of colonies  after decontamination by the two groups (Isopropyl alcohol and UV chamber) indicating that both agents were effective in disinfection. The reduction in microbial load in the mobile phones post intervention was 79.89% in the isopropyl alcohol group and 71% in the UV chamber group.

CONCLUSION: It is recommended that mobile phones in the dental setup be regularly decontaminated and dentists must adhere to strict infection control protocols specifically in relation to hand hygiene.


I am Dr Srikanthan Sriram, pursuing Masters in Public Health Dentistry , in Ragas Dental College and Hospital, Chennai, India.Infection control and prevention has been an area of keen interest for me which has instilled confidence in me to explore new ideas and strategies .As an undergraduate student I have done some research on this topic and it kindles immense interest in me. I have even taken my Library dissertation topic on Infection control in dental clinics.

About the College

The ACIPC is the peak body for Infection Prevention and Control professionals in the Australasian region. Our stated vision is the prevention and control of infection in our communities. We commenced in January 2012 bringing together the various State and Territory infection control associations formerly in AICA (The Australian Infection Control Association) to support and encourage collaboration across Australasia.

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