Takahashi, KarineMaltempi Filho, PauloCunha, Robson FredericoDezan Junior, Eloi [UNESP]2018-12-112018-12-112015-01-01Dental Press Endodontics, v. 5, n. 2, p. 26-32, 2015.2178-3713http://hdl.handle.net/11449/178142In order to evaluate late biological response of two types of filling material of deciduous teeth, calcium hydroxide and Guedes-Pinto pastes, the implantation technique in rat sockets was employed. For morphological analysis, carried out after 7 and 28 days, 48 rats had their maxillary right central incisor removed, and a polyethylene tube implant containing one of the pastes was placed into the socket. On the 7th day, calcium hydroxide paste caused greater edema than Guedes-Pinto paste, and both types of material showed connective tissue with fibroblasts and blood vessels, with macrophages and lymphocytes. On the 28th day, calcium hydroxide paste had connective tissue with a large amount of macrophages and lymphocytes near the material, whereas in further areas, it had neofomed trabeculae. For the Guedes-Pinto paste, there were neoformed bone trabeculae nearby. The latter were found in larger amounts in areas further from the material surface. Guedes-Pinto paste caused less edema and provided less interference in the repair process.26-32engCalcium hydroxideDeciduous toothRoot canal filling materialRoot canal therapyArtigo10.14436/2358-2545.5.2.026-032.oarAcesso restrito2-s2.0-8497811500588137772725819720000-0002-5699-6578