No abstract

BACKGROUNDEndodontic success lies in proper instrumentation and removal of all pulp tissue, necrotic material and microorganisms from the root canal. Traditionally, the point of termination for endodontic instrumentation and obturation has been determined by taking radiographs. But just how accurate is this radiographic measurement? The purpose of this study was to compare the accuracy of third generation electronic apex locator and radiographic technique.

Successful root canal involves as thorough cleansing of the root canal with an irrigating solution. Irrigating solutions dissolve necrotic tissues and debris from crevices and in many instances to root canal instruments and acts as lubricants for root canal instruments and makes the negotiation and enlargement of the canal far easier and reduces the possibility of instrument breakage. Although many author advocate use of different irrigating solution. Less was published regarding the use of combination of 0.2% Chlorhexidine and neutral EDTA as an irrigating solution. Study was performed in 80 single rooted teeth and irrigated using 0.2% Chlorhexidine, neutral EDTA, combination of both and 0.9% normal saline which is control group at different time appointment. It was found out that the reduction percentage in the teeth treated with 0.2% chlorhexidine within the canal after 15 mins., 48 hrs. and 96 hrs. are 58.78%, 79.97% and 90.35% respectively. The reduction percentage in that of neutral 0.2% EDTA at the same interval appointments were 21.52%, 29.14% and 40.30% respectively. The reduction percentage in microorganisms treated with combination of both solution after 15 mins., 48 hours and 96 hours were 89.96%, 92.96% and 95.41% respectively. This concludes that use of combination of 0.2% chlorhexidine and neutral EDTA was found to be the most suitable irrigating solution in success of root canal treatment.