L. C. V. Iwaki, F. M. Lacerda, M. C. da Silva, C. G. C. Bispo, e W. M. Takeshita, “<b&gt;Evaluation of the optical density of composite resins with the use of nanotechnology by means of intraoral radiographic system (CMOS)”, Acta Sci. Health Sci., vol. 37, nº 1, p. 89-94, jun. 2015.