Pedersen MH, Bak J, Matzen LH, Hartlev J, Bindslev J, Schou S et al. Coronectomy of mandibular third molars: a clinical and radiological study of 231 cases with a mean follow-up period of 5.7 years. International Journal of Oral and Maxillofacial Surgery. 2018 dec.;47(12):1596-1603. Epub 2018 jul. 13. doi: 10.1016/j.ijom.2018.06.006