title: A novel model surgery technique for LeFort III advancement.
abstract: Current techniques for model surgery and occlusal splint fabrication lack the ability to mark, measure and plan the position of the orbital rim for LeFort III and Monobloc osteotomies. This report describes a model surgery technique for planning the three dimensional repositioning of the orbital rims. Dual orbital pointers were used to mark the infraorbital rim during the facebow transfer. These pointer positions were transferred onto the surgical models in order to follow splint-determined movements. Case reports are presented to illustrate how the model surgery technique was used to differentiate the repositioning of the orbital rim from the occlusal correction in single segment and combined LeFort III/LeFort I osteotomies.
authors.affiliation: Division of Dentistry, Children's Hospital Los Angeles, USC School of Dentistry, Los Angeles, California 90027, USA.
authors.forename: Amornpong
authors.initials: A
authors.lastname: Vachiramon
authors.forename: Stephen L-K
authors.initials: SL
authors.lastname: Yen
authors.forename: Michael
authors.initials: M
authors.lastname: Lypka
authors.forename: Vijay
authors.initials: V
authors.lastname: Bindignavale
authors.forename: Jeffrey
authors.initials: J
authors.lastname: Hammoudeh
authors.forename: John
authors.initials: J
authors.lastname: Reinisch
authors.forename: Mark M
authors.initials: MM
authors.lastname: Urata
mesh_terms: D000293:Adolescent; D002508:Cephalometry; D002648:Child; D003394:Craniofacial Dysostosis / Q000150:complications; D005260:Female; D006801:Humans; D015826:Langer-Giedion Syndrome / Q000150:complications; D008297:Male; D008313:Malocclusion, Angle Class III / Q000150:complications / Q000000981:diagnostic imaging / Q000601:surgery*; D009915:Orbit / Q000033:anatomy & histology / Q000000981:diagnostic imaging; D019340:Osteotomy, Le Fort / Q000295:instrumentation / Q000379:methods*; D010347:Patient Care Planning; D011859:Radiography