Comparative Evaluation of Carisolv with EDTA and Sodium hypochlorite in Removing the Smear Layer on Radicular Dentine using SEM -An In Vitro Study
Bindu M. John, Shashi Rashmi Acharya, Vidya Saraswathi, Carounanidy Usha
scanning electron microscope, smear layer,CarisolvTM
Citation Information :
John BM, Acharya SR, Saraswathi V, Usha C. Comparative Evaluation of Carisolv with EDTA and Sodium hypochlorite in Removing the Smear Layer on Radicular Dentine using SEM -An In Vitro Study. 2012; 2 (2):11-18.
Background: Smear layer is a tough adherent layer on the instrumented radicular dentin composed of organic and inorganic debris. Removing this layer is imperative for disinfection and obturation of root canal. However no single irrigating solution is effective in removal of the smear layer. 5.25% Sodium hypochlorite and 17% EDTA have been proven to remove both the organic and the inorganic portion of the smear layer, when used alternatively. CarisolvTM is chemo mechanical agent in removal ofcaries which consists of0.5% of Sodium hypochlorite and amino acids. This study aims to evaluate the efficacy of CarisolvTM in removing the smear layer when compared with 17% EDTA, 5.25% Sodium hypochlorite and normal saline.
Methodology: 80 roots were divided into 4 groups. All roots were prepared by step back technique and irrigated with various solutions. Roots in Group 1 was irrigated with 1 ml of CarisolvTM, in Group 2 with 1 ml of 0.5% Sodium hypochlorite, in Group 3 with 1 ml of 17% EDTA andin Group 4 with lml of saline. All the teeth were sectioned longitudinally and then horizontally to obtain middle and apical third sections. These samples were evaluated with SEM and the photomicrographs were scored according to a 5-point scale. The data was analysed by using chi square test at p< 0.01.
Results: CarisolvTM was found to ineffective in removing the smear layer. 17% EDTA and 5.25% Sodium hypochlorite were effective in removal but neither of them removed the layer completely when used.
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