Vertical dimension record: a three dimensional phenomenon. Part II.
Face height and profile have two displacement dimensions that can be measured: the superior-inferior face height measurement, and the anterior-posterior displacement of the midsagittal profile measurement. The superior-inferior displacement is largely a function of movement of the lower lip and related mandibular structures. The anterior-posterior displacement is generally associated with movement of the upper lip, particularly the tubercle. The changes in one dimension are usually a function of change in the other dimension; that is, an increase in height may be associated with contraction of the dental arches; or conversely, reduction of vertical height may be associated with expansion of the dental arches.
D002508:Cephalometry / Q000379:methods; D005145:Face / Q000033:anatomy & histology* / Q000000981:diagnostic imaging; D006801:Humans; D007575:Jaw, Edentulous / Q000000981:diagnostic imaging / Q000473:pathology; D007576:Jaw, Edentulous, Partially / Q000000981:diagnostic imaging / Q000473:pathology; D009066:Mouth, Edentulous / Q000000981:diagnostic imaging / Q000473:pathology; D011859:Radiography; D014716:Vertical Dimension