Resumo

SIGEMORI, Ricardo Massao et al. Intra-root strengtening of weakened roots. Rev. Bras. Odontol. [online]. 2012, vol.69, n.2, pp. 250-254. ISSN 1984-3747.

The canal’s instrumentation by using single file in reciprocation movement is gaining popularity due to the reduction of working time and less prone to fractures of the instruments. Before choosing which system will use, the dentist must know the capabilities and limitations of each system based on scientific evidence. This article reviews the literature on the reciprocation movement pointing out the advantages and disadvantages of this different kinematic instrumentation.

Palavras-chave : Endodontics; reciprocating movement; NiTi..