Colak, Mehmet, et al. “Reliability of Linear Distance Measurements of Surgical Implants and Gutta Percha Lengths Used in Endodontic Treatment With Standardized Digital Radiography”. International Dental Research, vol. 7, no. 1, Apr. 2017, pp. 1-5, https://doi.org/10.5577/intdentres.2017.vol7.no1.1.