Branco, Filipe P., Gerson Axel Krieger Filho, and Maria C. L. G. Santos. 2015. “An Alternative Technique for Extraction of Residual Roots – a Case Report”. Brazilian Journal of Oral Sciences 2 (4). Limeira, SP:141-43. https://doi.org/10.20396/bjos.v2i4.8641662.