Bone-borne surgically assisted rapid maxillary expansion: A retrospective three-dimensional evaluation of the asymmetry in expansion

Autor: Johan Jansma, Martin P. Huizinga, Pieter U. Dijkstra, Jene W. Meulstee, Rutger H. Schepers
Přispěvatelé: Extremities Pain and Disability (EXPAND)
Rok vydání: 2017
Předmět:
Adult
Male
Cone beam computed tomography
Palatal Expansion Technique
Maxillary hypoplasia
media_common.quotation_subject
DISJUNCTION
Lateral expansion
Asymmetry
Asymmetrical expansion
Bone-borne distractor
Imaging
SKELETAL CHANGES
03 medical and health sciences
Young Adult
0302 clinical medicine
Imaging
Three-Dimensional
TOMOGRAPHY
medicine
Maxilla
three-dimensional
Humans
Rapid maxillary expansion
METAANALYSIS
media_common
Retrospective Studies
Orthodontics
Imaging
three-dimensional
COMPLICATIONS
business.industry
030206 dentistry
Maxillary Osteotomy
Cone-Beam Computed Tomography
medicine.disease
Maxillary osteotomy
Otorhinolaryngology
Facial Asymmetry
Surgicaly assisted rapid maxillary expansion
030220 oncology & carcinogenesis
PALATAL EXPANSION
Surgery
Female
Oral Surgery
TRANSPALATAL DISTRACTION
business
Zdroj: Journal of Cranio-Maxillofacial Surgery, 46(8), 1329-1335. Churchill Livingstone
ISSN: 1878-4119
1010-5182
Popis: Purpose: Asymmetrical expansion occurs in patients treated with Surgically Assisted Rapid Maxillary Expansion (SARME). In the clinical setting, this asymmetrical expansion is seen in multiple directions. However, the frequency, actual directions and amount of asymmetry are unclear. Hence, the aim of this study was to analyze the directions and amount of asymmetrical lateral expansion in non-syndromic patients with transversal maxillary hypoplasia on employing bone-borne transpalatal distraction by means of SARME. Treatment involved corticotomies of all four bony supports, including pterygomaxillary disjunction.Materials and methods: A retrospective case series was formed from patients treated with SARME. Pre- and postdistraction Cone Beam Computed Tomography scans were superimposed. A reference frame was created to analyze lateral expansion asymmetries in five directions.Results: Clinical relevant asymmetries (>3.0 mm) in at least one of the investigated directions occurred in 55% of the patients. Lateral expansion asymmetries occurred mostly in the inferior-anterior part between the left and right segment and asymmetry in total expansion was noted between the anterior and posterior part of the maxilla.Conclusion: This study confirms the clinical suspicion that using SARME with a bone-borne distractor and pterygomaxillary disjunction to treat non-syndromic patients with transversal maxillary hypoplasia, results in regular asymmetrical lateral expansion. (C) 2018 European Association for Cranio-Maxillo-Facial Surgery. Published by Elsevier Ltd. All rights reserved.
Databáze: OpenAIRE
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