fa Is the growth pattern in mouth breathers comparable with the counterclockwise mandibular rotation of nasal breathers? ارتودنسی Orthodontics پژوهشي Research <p> <strong>Introduction</strong></p><p>  The aim of this longitudinal study was to investigate mandibular rotation and angular remodeling in mouth-breathing children compared with nasal-breathing children. </p><p> <strong>Methods</strong></p><p>  The sample included 55 severely obstructed mouth-breathing children (mean age, 6.1 years) and 55 nasal-breathing children (mean age, 7.3 years). The cephalograms at baseline and after 1 year were traced and measured, and superimpositions were made to determine true mandibular rotation, apparent rotation, and angular remodeling. The significance level was set at 5%. </p><p> <strong>Results</strong> </p><p> The mouth-breathing children had a longer face cephalometric pattern compared with nasal-breathing children. No cranial deflection differences were observed. No changes in the vertical growth pattern were observed during the 1-year period in either group. There were no statistically significant differences between the groups regarding apparent rotation (mouth breathing, −0.54°, vs nasal breathing, −0.41°). In comparison with the nasal breathers, the mouth breathers showed statistically significant lower yearly rates of counterclockwise true rotation (mouth breathing, −0.60°, vs nasal breathing, −1.31°) and angular remodeling (mouth breathing, 0.06°, vs nasal breathing, 0.87°). <strong></strong></p><p> <strong>Conclusions</strong></p><p>  Mouth-breathing children had a hyperdivergent cephalometric pattern, but against all expectations, counterclockwise true mandibular and apparent rotations were the average observations. Mouth-breathing children showed less true rotation and angular remodeling than did nasal breathers however, apparent rotations were similar. </p><hr><p></p><p> <strong>Source: </strong>American Journal of Orthodontics & Dentofacial Orthopedics </p><p> <a href="http://www.ajodo.org/article/S0889-5406(13)00566-0/abstract" target="_blank"><font color="#0000ff">Full Text</font></a></p> 0 0 http://idai.ir/browse.php?a_code=A-10-32-1845&slc_lang=fa&sid=1 Letícia Paiva Franco 10031947532846008685 10031947532846008685 No Outpatient Clinic for Mouth-Breathers, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil Bernardo Quiroga Souki 10031947532846008686 10031947532846008686 Yes Graduate Program in Orthodontics, Pontifical Catholic University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil Tatiana Bahia J.Pereira 10031947532846008687 10031947532846008687 No Outpatient Clinic for Mouth-Breathers, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil Gabriela Meyge de Brito 10031947532846008688 10031947532846008688 No Graduate Program in Orthodontics, Pontifical Catholic University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil Helena M. Gonçalves Becker 10031947532846008689 10031947532846008689 No Outpatient Clinic for Mouth-Breathers, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil Jorge A.Pinto 10031947532846008690 10031947532846008690 No Division of Immunology, School of Medicine, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil