Abstract
Thank you for the compliment on our article, “Change in the vertical dimension of Class II Division 1 patients after use of cervical or high-pull headgear,” in the November 2016 issue of the AJO-DO.1Zervas E.D. Galang-Boquiren M.T. Obrez A. Viana M.G. Oppermann N. Sanchez F. et al.Change in the vertical dimension of Class II Division 1 patients after use of cervical or high-pull headgear.Am J Orthod Dentofacial Orthop. 2016; 150: 771-781Abstract Full Text Full Text PDF PubMed Scopus (15) Google Scholar We are happy to provide more details and clarification to our article. All of the cases (samples) used in this study are available as deidentified data through the bioprogressive research portal for any future study (web.bioprogressive.org). The samples consisted of 22 cervical headgears and 19 high-pull headgears. The distribution of the sexes was 60% female and 40% male for both groups. The average treatment time was 14 months. After evaluation of the results, we found similar reactions for both sexes (no statistical differences found); for this reason, we did not mention sex. Significant effort to match the sample as closely as possible to the growth prediction was also made, following the recommendations of Sagun et al.2Sagun M. Kusnoto B. Evans C.A. Galang-Boquiren M.T. Viana G. Obrez A. Evaluation of Ricketts' and Bolton's growth prediction algorithms embedded in two diagnostic imaging and cephalometric software.J World Fed Orthod. 2015; 4: 146-150Abstract Full Text Full Text PDF Scopus (3) Google Scholar We found no effect in the samples we used because of the short time between T1 and T2. We focused on the interplay between posterior tooth alterations and mandibular adaptation rather than calculating the amount of growth in size, as we found in our conclusions. Finally, the cervical headgear was a classic style attached to 2 bands on the maxillary permanent first molars with all characteristics and activations as described in the article.1Zervas E.D. Galang-Boquiren M.T. Obrez A. Viana M.G. Oppermann N. Sanchez F. et al.Change in the vertical dimension of Class II Division 1 patients after use of cervical or high-pull headgear.Am J Orthod Dentofacial Orthop. 2016; 150: 771-781Abstract Full Text Full Text PDF PubMed Scopus (15) Google Scholar The high-pull headgear was a removable Thurow-style to the maxilla.3Thurow R.C. Craniomaxillary orthopedic correction with en masse dental control.Am J Orthod. 1975; 68: 601-624Abstract Full Text PDF PubMed Scopus (51) Google Scholar No other appliances were used by the patients during the period studied. Effect of cervical or high-pull headgear on the vertical dimensions of Class II Division 1 patientsAmerican Journal of Orthodontics and Dentofacial OrthopedicsVol. 152Issue 1PreviewWe read the article entitled “Change in the vertical dimension of Class II Division 1 patients after use of cervical or high-pull headgear” by Zervas et al in the November 2016 issue with great interest.1 The authors are appreciated for their sincere effort. Having said that, as avid readers of your Journal, we want to raise a few questions that might be beneficial to other readers. Full-Text PDF
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