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ORIGINAL ARTICLE
Year : 2013  |  Volume : 3  |  Issue : 1  |  Page : 5-9

Comparative evaluation of Morinda citrifolia with chlorhexidine as antimicrobial endodontic irrigants and their effect on micro-hardness of root canal dentin: An in vitro study


Department of Pedodontics and Preventive Dentistry, Bapuji Dental College and Hospital, Davangere, Karnataka, India

Correspondence Address:
A R Prabhakar
Department of Pedodontics and Preventive Dentistry, Bapuji Dental College and Hospital, Davangere - 577 004, Karnataka
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/2231-6027.122086

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Objectives: The current study was intended to compare and to evaluate in vitro the antimicrobial efficacy of Morinda citrifolia juice (MCJ) with chlorhexidine (CHX) as endodontic irrigants and their effect on micro-hardness of root canal dentin. Methodology: The study was divided into two parts. Part I for antibacterial testing consisted of preparing 60 dentin blocks of 4 mm height. All the dentin blocks were infected with Enterococcus fecalis for a period of 21 days. The experimental groups were Group I: 0.2% CHX; Group II: 6% MCJ; Group III: 6% MCJ + 0.2% CHX; Group IV: Saline. After 28 days of medication with the irrigants, the dentin shavings from root canal dentin was harvested and colony forming units counted. Part II for micro-hardness testing consisted of preparing 32 root halves and mounting them on blocks of acrylic resin. 8 samples per group were randomly divided into the experimental groups. The samples were then medicated with the irrigants for a period of 15 min and micro-hardness values were recorded. Results: Data obtained was analyzed using one-way ANOVA, Kruskal-Wallis and Mann-Whitney U-test and Student's paired t-test. Part I: Group I showed highest antibacterial activity followed by Group III with Group II taking the third place and were statistically significant (P < 0.001). Part II: None of the groups showed any effect on micro-hardness of root canal dentin, which was not statistically significant (P > 0.4). Conclusion: Nearly 0.2% of CHX showed the highest antimicrobial activity even after 28 days and 6% of MCJ also showed antibacterial activity, but to a lesser degree than CHX. None of the irrigants tested had any effect on the micro-hardness of root canal dentin.


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