Mandibular morphology and distraction osteogenesis vectors in patients with Robin sequence.

Autor: Duarte DW; Division of Plastic and Craniofacial Surgery, Hospital de Clínicas de Porto Alegre, Rio Grande do Sul Federal University, Porto Alegre, Brazil. Electronic address: daniwalterduarte@gmail.com., Fleith IJ; Department of Radiology, Hospital de Clínicas de Porto Alegre, Rio Grande do Sul Federal University, Porto Alegre, Brazil., Pinheiro RC; School of Design, Rio Grande do Sul Federal University, Porto Alegre, Brazil., Machado MF; School of Medicine, Rio Grande do Sul Federal University, Porto Alegre, Brazil., Zanin EM; Division of Plastic and Craniofacial Surgery, Hospital de Clínicas de Porto Alegre, Rio Grande do Sul Federal University, Porto Alegre, Brazil., Collares MVM; Division of Plastic and Craniofacial Surgery, Hospital de Clínicas de Porto Alegre, Rio Grande do Sul Federal University, Porto Alegre, Brazil.
Jazyk: angličtina
Zdroj: International journal of oral and maxillofacial surgery [Int J Oral Maxillofac Surg] 2023 Apr; Vol. 52 (4), pp. 442-450. Date of Electronic Publication: 2022 Aug 17.
DOI: 10.1016/j.ijom.2022.07.007
Abstrakt: The aims of this cohort study were to compare the mandibular morphology between patients with Robin sequence (RS) and controls, and to examine the effects of mandibular distraction osteogenesis (MDO) using different vectors. Measurements of the mandibles of 80 patients with RS and 46 controls aged< 90 days were made using computed tomography. The data were compared among isolated RS patients (n = 58), syndromic RS patients (n = 22), and controls. Patients with RS exhibited significantly shorter ramus and body lengths and larger symphyseal angles than controls (all P < 0.001). Patients with isolated RS had shorter body lengths (P < 0.001), while syndromic patients had shorter ramus and body lengths (both P < 0.001) than controls. Seventy RS patients underwent MDO. Pre-MDO (n = 37) and post-MDO (n = 29) mandibular measurements were compared between patients undergoing MDO with a vertical vector and those undergoing MDO with a horizontal vector. Polysomnography data from part of the cohort highlighted the effectiveness of both vectors. MDO with a horizontal vector conferred 11% and 36% increases in ramus and body length, respectively, while these increases were 34% and 27.5%, respectively, with a vertical vector. MDO with a vertical vector was effective in lengthening ramus and body components and should be considered in the presence of ramus hypoplasia.
Competing Interests: Competing interests None.
(Copyright © 2022 International Association of Oral and Maxillofacial Surgeons. Published by Elsevier Inc. All rights reserved.)
Databáze: MEDLINE
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