Rosato, M.L., Mainini, M., Luongo, M., Mascolo, L., Mattera, S. and Schiaffino, L. 2016. Oxygen-ozone therapy: our experience in the treatment of hard-root conflicts. Ozone Therapy. 1, 2 (Sep. 2016), 34–35. DOI:https://doi.org/10.4081/ozone.2016.6271.