Evaluation of Dental Shade Guide Variability Using Cross-Polarized Photography.Published in:International Journal of Periodontics & Restorative Dentistry, 2016, v. 36, n. 5, p. e76, doi. 10.11607/prd.2700By:Gurrea, Jon;Gurrea, Marta;Bruguera, August;Sampaio, Camila S.;Janal, Malvin;Bonfante, Estevam;Coelho, Paulo G.;Hirata, RonaldoPublication type:Article