Reproducibility of aimed-at profiles.
Would a surgeon always draw the same aimed-at profile when planning the correction of a face with evidently malpositioned jaws? The same 10 profile lines were given to seven maxillofacial surgeons on two occasions at intervals of 6 months. The differences in absolute and proportional vertical measurements were compared. It is shown that the variations between first and second drawing were quite large for individual values. However, even the mean differences per measurement vary between surgeons from 0 to 10%. The drawings for the whole group corresponded reasonably well with the ratios given by Farkas and Munro (1987) but were rather divergent from the 'golden dimensions' proposed by Brons and Mulié (1993). Considering the sometimes significant differences, one is advised not to draw profiles 'off the cuff' but to use a construction system for planning osteotomies.
Mooren
R E
RE
Department of Oral and Maxillofacial Surgery, University Hospital Nijmegen, The Netherlands.
Freihofer
H P
HP
Borstlap
W A
WA
D002508:Cephalometry; D002680:Chin / Q000033:anatomy & histology; D005145:Face; D006801:Humans; D008046:Lip / Q000033:anatomy & histology; D008310:Malocclusion / Q000601:surgery*; D008334:Mandible / Q000033:anatomy & histology; D009666:Nose / Q000033:anatomy & histology; D010027:Osteotomy; D010347:Patient Care Planning; D015203:Reproducibility of Results; D013515:Surgery, Oral; D014716:Vertical Dimension