摘要：Pulp canal obliteration is defined as a deposition of hard tissue within the root canal space. These tissues can eventually produce the radiographic appearance of a root canal space that has become partial or completely calcified. Success in root canal treatment is based on proper debridement, disinfection and obturation of the root canal system Calcified root canal causes problem during endodontic treatment due to difficulty in canal orifice location, negotiation, preparation as well as there is consideration of operating time. Richman first introduced the concept of using ultrasonics (US) in endodontics. Ultrasonics is considered an effective method in managing calcified canals for gaining access. This article discusses the various management approaches and highlight treatment strategies for calcified canals
