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  • Title: Comparative evaluation of chlorhexidine and cinnamon extract used in dental unit waterlines to reduce bacterial load in aerosols during ultrasonic scaling.
    Author: Mamajiwala AS, Sethi KS, Raut CP, Karde PA, Khedkar SU.
    Journal: Indian J Dent Res; 2018; 29(6):749-754. PubMed ID: 30589003.
    Abstract:
    BACKGROUND: Dental unit waterlines (DUWL) are believed to be a source of infection. Ultrasonic instruments generate aerosols with significantly greater numbers of bacteria. Chlorhexidine (CHX) exhibits significant antiseptic effect. Recently, cinnamon (CIN) has been displayed to have antibacterial and anti-inflammatory properties in vivo. AIM: The aim of this study is to compare and evaluate the efficacy of CHX versus CIN extract in the reduction of bacterial count in dental aerosols when used as an irrigant through DUWL during ultrasonic scaling. MATERIALS AND METHODS: Sixty patients with moderate-to-severe gingivitis were randomly divided into 3 groups of 20 patients each undergoing ultrasonic scaling. For experimental group I, CHX was added in dental unit reservoir before ultrasonic scaling. Similarly, in group II, CIN extract was used and group III served as control where distilled water (DW) was used. The aerosols from ultrasonic units were collected on two blood agar plates at three different positions. One plate from each position was incubated aerobically for 48 h and other plate anaerobically for 72 h. The total number of colony forming units (CFUs) was then calculated and statistically interpreted. RESULTS: CHX and CIN both were equally effective (P > 0.05) in reducing the bacterial count in aerosols as compared to DW (P < 0.05) when used through DUWL. Maximum contamination was seen on the agar plate placed at the chest of the patient. CONCLUSION: Both CIN and CHX used as an irrigant through DUWL effectively helped in the reduction of bacterial count in dental aerosols.
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