title: Three-dimensional analysis of changes in location of crowns and root apices of maxillary central incisors.
abstract: A method has been described for analyzing the direction and extent of movement of root apices and midpoints of the incisal edges of maxillary central incisors. The system permits a detailed examination of the effectiveness of any orthodontic technique in relocating maxillary incisors and is particularly useful in determining the efficacy of "torquing" mechanisms.
mesh_terms: D002508:Cephalometry; D006801:Humans; D007180:Incisor / Q000033:anatomy & histology* / Q000000981:diagnostic imaging; D008437:Maxilla; D003765:Models, Dental; D011859:Radiography; D012399:Rotation; D014087:Tooth Movement Techniques; D014092:Tooth Root / Q000033:anatomy & histology* / Q000000981:diagnostic imaging