“…6,7 The present findings showed no difference in outer margin values between groups, although the vertical differences in craniofacial morphology were related to the outer margin measurements. 28 The anatomy and position of the cervical curvature in space depend on various body factors, including ethnicity, [29][30][31] gender, 29,30,[32][33][34] age, 3,32,33 stature, 35 and craniofacial morphology. 4,10,11,[36][37][38][39] Differences in these correlations might be attributed to factors such as racial difference, 39 although the association between craniofacial measurements and atlas morphology varied with sex and age.…”