Proximal segment position after distraction with the MD-DOS device

Citation
K. Hendrickx et al., Proximal segment position after distraction with the MD-DOS device, J CRAN MAX, 27(6), 1999, pp. 383-386
Citations number
11
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Dentistry/Oral Surgery & Medicine
Journal title
JOURNAL OF CRANIO-MAXILLOFACIAL SURGERY
ISSN journal
1010-5182 → ACNP
Volume
27
Issue
6
Year of publication
1999
Pages
383 - 386
Database
ISI
SICI code
1010-5182(199912)27:6<383:PSPADW>2.0.ZU;2-Z
Abstract
We investigated cephalometrically the movement of the proximal segment in t he sagittal plane in patients treated with distraction (MD-DOS device) for mandibular lengthening. The proximal segment was anteriorly rotated, whilst the distal segment was posteriorly rotated after the lengthening procedure . Thus the angle of the jaw was advanced half the distance of the advanceme nt of the distal segment. One possible reason for the anterior rotation of 3.3 degrees on average is the repositioning of the proximal segment during application of the anterior fixation unit in the cases where mobilization w as complete. Another more plausible reason is the anterior pull by the mast icatory muscles and elastic bands being greater than the reactive distracti on vector component in concert with a flexible telescopic distraction modul e and a single posterior screw anchorage. The positional movements of both distal and proximal segments were similar to those observed after mandibula r advancement with bilateral sagittal split osteotomies. (C) 1999 European Association for Cranio-Maxillofacial Surgery.