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Irrigation Of Root Canal Therapy

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Irrigation stands on top of the various procedures followed during root canal therapy; evidence supports that significant portions of root canals harbouring the endodontic biofilm remain undisturbed even after thorough mechanical preparation, thus emphasizing the critical importance of irrigation in endodontic practise. As discussed earlier combination of various irrigants either simultaneously or sequentially are essential to eradicate the endodontic biofilm. A huge array of irrigants have been used in endodontic practise, yet sodium hypochlorite owing to its characteristic properties like pulp dissolution and antibacterial properties still remains the most commonly used and the most effective agent for irrigation of root canals. Also sodium hypochlorite is responsible for removal of organic portion of the smear layer. Ethylene diamine tetra acetic acid is yet another commonly used irrigant in endodontic practise and one of most reliable agent for eradication of smear layer. Chlorhexidine digluconate known for its sustained antimicrobial action is commonly used as intracanal medicament as well as irrigating solution. Its affectivity against E. faecalis makes it the irrigant of choice in retreatment and root canal failure cases. Hydrogen peroxide, iodine compounds, organic acid like citric acid, maleic acid, normal saline and water are few amongst the various synthetic agent used for irrigation in endodontics. Sequential use of sodium hypochlorite followed by EDTA as a final

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