Calvo, F., Murayama, N., Justus Doczi, R., Ondarza Robira, R., & García López, S. (2017). Comparative study of bond strength of tubes bonded to a resin surface on the buccal aspect of molars using Empress Direct resin and Transbond XT resin: an ex vivo study. Revista Mexicana De Ortodoncia, 5(3). https://doi.org/10.1016/j.rmo.2017.12.009