Paste of hydroxyapatite-iodine-flagy as root canal filling material

Objective: To observe the clinical effect of the paste of hydroxyapatite-iodine-flag as root canal filling material.Methods: The 120 teeth in group A were treated by the paste of hydroxyapatite-iodine-flagy as root canal filling material.The 150 teeth in group B were treated by the paste of zincoxide-eugend and gutta percha point as root canal filling material.The clinical effects were evaluated based on the evidence of X-ray and the follow-up results of 3 months,6 months,1 year and 3 years were compared.Results: The effect was better in group A than in group B(P<0.05);and so was the reconstruction of apical bone(P<0.01 to P<0.005).Conclusions: The paste of hydroxyapatite iodine flag is the ideal material for root canal filling.