fa عمومى General پژوهشي Research <strong>Introduction</strong>: to determine the head posture in anterior-posterior skeletal malocclusion caused by mandibular growth problems.<br> &nbsp;<br> <strong>Methods</strong>: In this analytical study, Lateral cephalometric images were taken from 66 patients and categorized into three classes of malocclusion, including classes I (n=22), II (n=25) and III (n=19). The collected data was analyzed by SPSS17 software using ANOVA, independent t-test and Kruskal-Wallis.&nbsp; This study was done in orthodontics department of Dental School, Shahid Sadoughi University of Medical Sciences, Yazd, in 2017.<br> &nbsp;<br> <strong>Findings</strong>: The craniocervical angles were significantly lower in men than women (P <0.05). The OPT/CVT angle, which represents cervical curvature, was significantly lower in men than women (P = 0.001). Regarding to gender and type of malocclusion, craniovertical and craniohorizontal angles were significantly lower in classes II and III male patients than those in class I (P<0.05).<br> &nbsp;<br> <strong>Conclusion: </strong>class II men had a tendency to move up their head. On the other hand, class &Iota;&Iota;&Iota; male patients turned their head and neck upward despite the forward position of the mandible. The mandibular length may have more effect on the patient&#39;s head position than neck position. Malocclusion, Cephalometry, Facial, Cranium, Head-Down Tilt. 51 62 http://intjmi.com/browse.php?a_code=A-10-1-283&slc_lang=fa&sid=1 Soghra Yassaei 10031947532846003217 10031947532846003217 No Social Determinants of Oral Health Research Center, Shahid Sadoughi University of Medical Sciences, Yazd, Iran Fateme Ezoddini 10031947532846003218 10031947532846003218 No Social Determinants of Oral Health Research Center, Shahid Sadoughi University of Medical Sciences, Yazd, Iran Atefe Sasani 10031947532846003219 10031947532846003219 Yes Faculty of Dentistry, , Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Somaye Kordi 10031947532846003220 10031947532846003220 No Department of Orthodontic, Faculty of Dentistry, , Shahid Sadoughi University of Medical Sciences, Yazd, Iran