Smear Layer Removal Efficacy of Natural Root Canal Irrigants- A Literature Review

An efficient chemomechanical preparation is essential for the success of endodontic treatment. There are various methods of instrumentation and irrigation, the canals are instrumented with either hand files or rotary. Chemical agents are used for irrigation during instrumentation to completely sterilise the canals. A lot of natural products are also used as irrigating agents as they have a lot of antimicrobial, anti-inflammatory, antioxidant and other biological properties. Several commonly used irrigants come with certain disadvantages. Certain chemicals like sodium hypoclorite can be toxic and weakens the dentine microstructure, but by using natural agents these side effects can be prevented. Less toxic and more biocompatible products are being increasingly used such as apple vinegar, citrus fruits, miswak, tulsi, chitosan, neem, turmeric, triphala etc. The natural preparations are derived from roots, seeds, leaves of plants preparations or shells of animals. This narrative review is aimed at highlighting various natural agents which can be considered as a potential adjunct for endodontic treatment.