Nakhaee, Mahdie, et al. “Large Radicular Cyst With Both Buccal and Palatal Cortical Bones Perforation Secondary to Vital Pulp Therapy Failure”. International Journal of Dental Research, vol. 4, no. 2, Sept. 2016, pp. 47-52, https://doi.org/10.14419/ijdr.v4i2.6593.