Comparative Evaluation of Impact of Sodium Hypochlorite on Physical Properties of Finishing Files of ProTaper Gold And Dia-x ProTaper An In-Vitro Randomized Control Trial.

It is estimated that over 95% of the reported cases of orofacial pain arises due to diseases of teeth and their associated supporting structures . There are several known etiological factors amongst which caries is the major cause of pulpal inflammation. The severity of the pulpal inflammation increases as the carious lesions progress deep into dentine and towards the pulp. This inflammatory process if left untreated triggers a cascade of events that leads to development of local or systematic pathologies. To resolve the symptoms of pulpitis, it becomes mandatory to carry out endodontic treatment by means of root canal treatment.

Root canal treatment is defined as "eradication and/or inhibition of apical periodontitis. Endodontic therapy is rendered as one of the most widely performed dental procedure as per survey conducted by AAE in 2007, the results showed the estimate of about 15.1 million RCT being performed annually in America.

Endodontic therapy is a categorization of treatment steps to eradicate the pulpal and Periapical infection from infected tooth. The therapy aims to decontaminate the tooth so that microbial invasion in future can be prevented. In case of already established Periapical lesion, root canal treatment facilitates healing of Periapical pathology, thus restoring the function of the dentition and at same time prevent reinfection of the tooth.

In order to carry out endodontic therapy successfully, the eradication of organic and inorganic debris from root canal system by means proper cleaning and shaping using chemo-mechanical debridement is compulsory. Adequate cleaning, shaping, proper irrigation and sealing of root canal is the triad for effective root canal therapy. The cleansing of the root canals is completed with the aid of endodontic files and irrigants, and later appropriate closing of the root canals by means of endodontic obturation is done.

The model of the germ theory of disease integrated with the development of dentistry had a direct effect on the practice of endodontics during the latter half of the 19TH century. The period between 1859 strengthened the importance of irrigation in endodontics when the use of syringes became frequent to remove "irritants" from root canal system and it was recommended by Taft until the mid-1940s when endodontics turn out to be a special field within dentistry and the American Endodontic Society was recognized.