V. P. D. Westphalen, E. Carneiro, L. F. Fariniuk, U. X. da Silva Neto, F. H. Westphalen, and A. Kowalczuck, “Maintenance of Pulp after Horizontal Root Fractures in Three Maxillary Incisors: A Thirteen-Year Evaluation”, Iran Endod J, vol. 12, no. 4, pp. 508–511, Oct. 2017.