2018-12-062018-12-062006MAMEDE NETO, Iussif; RANGEL, Andrea Leão; ESTRELA, Carlos. Influência de instrumentos de níquel-titânio na qualidade tridimensional da modelagem radicular em molares superiores e inferiores. Robrac: revista odontologica do Brasil Central: Goiânia, v. 15, n. 39, p. 66-76, 2006.0104-7914http://repositorio.bc.ufg.br/handle/ri/16535The aim of the present study was to analyze the quality of the internal morphology of the root canals of maxillary molars, subsequent to the cleaning and shaping with nickel-titanium instruments with continuous rotation. Forty maxillary molar human teeth, were distributed on the basis of different types of ® endodontic instruments: K 3 , ProTaper, ProFile e K-FlexoFile (control). The molding of the prepared root ® canals was carried out with Aquasil ULV impression material. The teeth were submitted to demineralization with chloridric acid at 35%. For the verification of the quality of the internal morphology ® three examiners analyzed the moldings. The technique used with ProTaper instruments showed a preparation with greater regularity index, considering the three thirds of the root canal. In maxillary molars it was observed 94,30% of regular conic form; in mandibular molar were verified surface with conic regular form in 86,95% of samples. K 3 and Protaper showed a preparation with greater regularity index.porAcesso AbertoInstrumentos de níquel-titânioPreparo biomecânicoPreparo do canal radicularModelagemInstrumentação do canal radicularNickel-titanium instrumentsRoot canal preparationCleaning and shapingArtigo