Efficacy of 0.2% tempered chlorhexidine as a pre-procedural mouth rinse: A clinical study.
OBJECTIVE
Our objective was to determine the efficacy of pre-procedural rinsing with chlorhexidine in reducing bacterial aerosol contamination during use of ultrasonic scaler and comparing the efficacy of water, non-tempered chlorhexidine and tempered chlorhexidine in reducing bacterial count in aerosols when used as a pre-procedural rinse.


METHODS
The study was designed to include 30 systemically healthy patients in different age groups. The patients were divided randomly into 3 groups (I, II, III) of 10 patients each to be administered with sterile water, non tempered chlorhexidine and tempered chlorhexidine, respectively, as a pre-procedural rinse. The aerosol produced by the ultrasonic unit was collected at 3° clock, 6° clock and 12° clock positions on blood agar plates within a range of 4 feet in all the three groups. The blood agar plates were incubated for 48 hours and the total number of colony forming units (CFUs) were counted and statistically analyzed.


RESULTS
The results showed that CFU in group III and group II were significantly reduced when compared to group I with F=1084.92, P<0.001 (ANOVA). Also, CFU in group III was significantly reduced when compared to group II with P<0.001.


CONCLUSIONS
Pre-procedural rinse can significantly reduce the viable microbial content of dental aerosols and tempered chlorhexidine was more effective than non-tempered chlorhexidine.
Department of Periodontics, Dr. Syamala Reddy, Dental College Hospital and Research Centre, Bangalore, Karnataka, India.
Shantipriya
S
Reddy
M G S
MG
Prasad
Sanjay
S
Kaul
K
K
Satish
Sabana
S
Kakarala
Nirjhar
N
Bhowmik