1.- Basrani, Bettina. ENDODONTIC RADIOLOGY 2nd. ed. John Wiley & Sons, Incorporated, Ames, Iowa. 2012. 426 pp
2.- Berman, L.H., Hargrreaves, K.M, COHEN'S PATHWAYS OF THE PULP, 12th. ed.Elsevier. St. Louis Missouri. 2021. Chapter 1
3.-Canalda Sahli C, Brau Aguadé E.. ENDODONCIA. Técnicas clínicas y bases científicas.4a. ed. Elsevier Health Sciences Spain, 2019.
4.-Fava, L.R.G. y Dummer, P.M.H (1997). Periapical radiographic techniques during endodontic diagnosis and treatment. Int End Journal 3: 250 - 261.