Response to: Cardinal L, da Silva TR, Andujar ALF, Gribel BF, Dominguez GC, Janakiraman N. Evaluation of the three-dimensional (3D) position of cervical vertebrae in individuals with unilateral posterior crossbite. Clin Oral Investig. 2021 Jul 13. doi: 10.1007/s00784-021-04020-5