Performance of the Malmgren Index for Assessing Root Resorption on 2D vs. 3D Radiographs: A Pilot Study.
Hanne MichielsensJulie DecreusGiacomo BegnoniAnna VerdonckReinhilde JacobsGuy WillemsMaria Cadenas de Llano-PérulaPublished in: Healthcare (Basel, Switzerland) (2023)
The original Malmgren index is not suited for 3D images, especially axial, where using dichotomized values (resorption yes/no) leads to overestimation of RR. A low-dose CBCT of the upper incisors could detect RR with high diagnostic accuracy in the early stages of orthodontic treatment, especially in patients with dental trauma or familial RR history.