KHANNA, T.; GURAV, S.; IV, R.; DB, N. Influence Of Porcelain Thickness And Repeated Firings On The Color Of Metal - Ceramic Restorations - An In Vitro Study: Influence of Porcelain Thickness & Repeated Firings On The Color Of Metal - Ceramic Restorations. National Journal of Integrated Research in Medicine, [S. l.], v. 7, n. 4, p. 132–139, 2018. DOI: 10.70284/njirm.v7i4.1119. Disponível em: http://www.nicpd.ac.in/ojs-/index.php/njirm/article/view/1119. Acesso em: 4 may. 2025.