COX-2 inhibition decreases VEGF expression and alveolar bone loss during the progression of experimental periodontitis in rats - Oliveira, Thais Marchini de; Sakai, Vivien Thiemy; Machado, Maria Aparecida de Andrade Moreira; Dionisio, Thiago José; Cestari, Tania Mary; Taga, Rumio; Amaral, Sandra Lia do; Santos, Carlos Ferreira dos (Journal of Periodontology, 2008)