Effect of denture quality on perioral muscle activity during speech - Santos, Carla Moreto; Vitti, Mathias; Mattos, Maria da Glória Chiarello de; Semprini, Marisa; Paranhos, Helena de Freitas Oliveira; Hallak, Jaime Eduardo Cecílio; Regalo, Simone Cecílio Hallak (Brazilian Journal of Oral Science, 2005)