Immediate versus delayed midface distraction in a primate model using a new intraoral internal device

Plastic and Reconstructive Surgery
Jeffrey WeinzweigScott P Bartlett

Abstract

The theoretic advantage of distraction osteogenesis of the craniofacial skeleton, especially in cases of severe midface retrusion and in the presence of maxillary scarring, is prevention of relapse following significant advancements. The purpose of this study is to demonstrate the utility of a new low-profile, intraoral, internal device for midface distraction at the conventional or high Le Fort I level. In addition, the present study compares the efficacy of immediate versus delayed distraction on subsequent maxillary relapse. Four adult rhesus Macaca mulatta monkeys were divided into two groups. Group 1 underwent immediate midface distraction; group 2 underwent delayed distraction. All four monkeys underwent a modified Le Fort I osteotomy through an upper buccal sulcus incision and bilateral application of the intraoral midface distraction devices. No other osteotomies or incisions were necessary. Immediate distraction, performed in group 1, entailed intraoperative activation of the devices and distraction of 10 mm followed by a 5-day lag period before postoperative activation and distraction of an additional 10 mm at the rate of 1 mm/day. Delayed distraction, performed in group 2, entailed a 5-day postoperative lag period be...Continue Reading

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Citations

Feb 5, 2004·International Journal of Oral and Maxillofacial Surgery·V NadjmiE Schepers
Jun 29, 2004·Plastic and Reconstructive Surgery·Jack C. YuJohn W. Polley
Sep 1, 2007·The Cleft Palate-craniofacial Journal : Official Publication of the American Cleft Palate-Craniofacial Association·Stephen B BakerScott P Bartlett
Apr 21, 2012·Journal of Oral and Maxillofacial Surgery : Official Journal of the American Association of Oral and Maxillofacial Surgeons·Maria E PapadakiMaria J Troulis
Sep 13, 2006·International Journal of Oral and Maxillofacial Surgery·N NadjmiR Van Erum
Feb 21, 2006·Journal of Oral and Maxillofacial Surgery : Official Journal of the American Association of Oral and Maxillofacial Surgeons·Stuart SuperRichard D Bae
Mar 26, 2013·The Journal of Craniofacial Surgery·James Thomas PaligaJesse Adam Taylor
Apr 28, 2006·Plastic and Reconstructive Surgery·Anand KumarJames P Bradley
Dec 25, 2009·The Journal of Craniofacial Surgery·Alvaro A FigueroaAlexander L Figueroa
Dec 20, 2007·Oral and Maxillofacial Surgery Clinics of North America·George K B SándorJohn Daskalogiannakis
Aug 20, 2008·Atlas of the Oral and Maxillofacial Surgery Clinics of North America·George K B SándorRobert P Carmichael

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