A comparative study of two arbitrary face-bow transfer systems for orthognathic surgery planning.
The relative reproducibility of two widely used arbitrary face-bow transfer systems, the Denar Slidematic and the Dentatus type AEB, was assessed for use in orthognathic surgery planning. A novel method was also developed to determine any variation in three-dimensional spatial position and orientation of the maxillary cast. This envelope of movement enabled realistic comparisons to be made for each face-bow system, operator, and skeletal type. The overall face-bow/articulator procedure showed poor reproducibility. However, the Denar Slidematic face-bow was better (P < 0.001) than the Dentatus type AEB standard face-bow, and the errors were higher in the anteroposterior and lateral directions than the vertical direction. There was no significant difference between operators for each system.
Bamber
M A
MA
Joint Department of Oral and Maxillofacial Surgery, Eastman Dental Hospital, London, UK.
Firouzal
R
R
Harris
M
M
Linney
A
A
D000704:Analysis of Variance; D003725:Dental Articulators; D003766:Dental Occlusion; D004867:Equipment Design; D005260:Female; D006801:Humans; D007180:Incisor / Q000473:pathology; D007574:Jaw Relation Record / Q000295:instrumentation* / Q000379:methods; D008297:Male; D008310:Malocclusion / Q000473:pathology / Q000601:surgery*; D008311:Malocclusion, Angle Class I / Q000473:pathology / Q000601:surgery; D008312:Malocclusion, Angle Class II / Q000473:pathology / Q000601:surgery; D008313:Malocclusion, Angle Class III / Q000473:pathology / Q000601:surgery; D008334:Mandible / Q000473:pathology / Q000601:surgery; D008437:Maxilla / Q000473:pathology / Q000601:surgery; D003765:Models, Dental; D015588:Observer Variation; D010347:Patient Care Planning; D015203:Reproducibility of Results; D014716:Vertical Dimension