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ORIGINAL RESEARCH Table of Contents   
Year : 2010  |  Volume : 21  |  Issue : 4  |  Page : 512-514
An in vitro study of antibacterial effect of calcium hydroxide and chlorhexidine on Enterococcus faecalis

1 Department of Conservative Dentistry and Endodontics, Dr. H S Judge Institute of Dental Sciences, Chandigarh, India
2 Department of Conservative Dentistry and Endodontics, DAV (C) Dental College, Yamuna Nagar, Haryana, India

Correspondence Address:
Swaty Jhamb
Department of Conservative Dentistry and Endodontics, Dr. H S Judge Institute of Dental Sciences, Chandigarh
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/0970-9290.74222

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Aim: To evaluate and compare the antibacterial effects of chlorhexidine and calcium hydroxide on Enterococcus faecalis. Materials and Methods: Root canal treatment involves a number of steps. In spite of all the steps done thoroughly, root canal treatment might fail due to the remnant microbes. Of all such bacteria, E. faecalis is found in failed root canals. The study tests the antibacterial activity of various intracanal medicaments. Agar diffusion test was used to evaluate the antibacterial effects of the following antibacterial agents: i. hexidine:0.2% chlorhexidine gluconate; ii. periogard:0.12% chlorhexidine gluconate; iii. calcium hydroxide powder plus sterile water; iv. metapaste plus sterile water; v. calcium hydroxide plus hexidine; vi. calcium hydroxide plus periogard; vii. metapaste plus hexidine; viii. metapaste plus periogard. The size of zones of inhibition was measured. Results: The average size of zones of inhibition after 72 hours were hexidine: 5 mm; periogard: 4.25 mm; calcium hydroxide plus sterile water: 0.5 mm; metapaste plus sterile water: 0.5 mm; calcium hydroxide plus hexidine: 4.7 mm; calcium hydroxide plus periogard: 4 mm; metapaste plus hexidine: 4.65 mm; metapaste plus periogard: 4 mm. Results were subjected to statistical analysis using one way analysis of variance and Tukey tests. Conclusion: Chlorhexidine and its preparations are more potent antibacterial agents againstE. faecalis in comparison to calcium hydroxide.

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