[Advances in root canal filling materials used in primary teeth].

Root canal treatment of primary teeth is the most common treatment method for pulpitis and periapical periodontitis in pediatric dentistry. Effective root canal treatment could prevent the teeth from occurring of periapical infection or promote the healing of periapical lesions of teeth with periodontitis for preserving the decayed tooth, preventing early loss of primary teeth and inducing the formation of normal permanent dentition. The material selection for root canal filling is one of the most important factors influencing the treatment outcome of root canal treatment. So far, there has been various root canal filling materials used in clinic. This paper summarized the characteristics and clinical applications of currently used root canal filling materials in treatment of primary teeth.