M. A.-A. . Sarkar, M. . Rahman, M. K. Alam, A. N. M. . Abdullah, and M. M. . Anisuzzaman, “Effect of Sprue Design in Nickel-Chromium Cast Crown Margin”, Pesqui Bras Odontopediatria Clin Integr, vol. 21, p. e0110, Nov. 2021.