Skull Base Cephalometric Changes in Cranial Expansion by Springs

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art_DORNELLES_Skull_Base_Cephalometric_Changes_in_Cranial_Expansion_by_2011.PDF (1.16 MB)
Citações na Scopus
5
Tipo de produção
article
Data de publicação
2011
DOI
Scopus
Web of Science
PubMed
Título da Revista
ISSN da Revista
Título do Volume
Editora
LIPPINCOTT WILLIAMS & WILKINS
Autores
DORNELLES, Rodrigo de Faria Valle
CARDIM, Vera Lucia Nocchi
PINTO, Ana Carolina Brandao de Campos Fonseca
Citação
JOURNAL OF CRANIOFACIAL SURGERY, v.22, n.4, p.1496-1501, 2011
Projetos de Pesquisa
Unidades Organizacionais
Fascículo
Resumo
Background: The use of springs in cranial expansion has demonstrated to be effective for craniosynostosis treatment. The spring-exerted expansile action has been observed when springs are placed both in the sagittal and parasagittal regions, mainly in scaphocephaly. In this study, a variation in cephalometric measurements under expansible spring action on the skull base was analyzed. Methods: Thirteen 4-week-old New Zealand white rabbits were divided into 4 groups: group 1, in which only amalgam markers were used (control); group 2, in which amalgam markers were used, and a sagittal suturectomy was performed; group 3, in which amalgam markers were used, and a sagittal suturectomy was performed with placement of expansible springs in the interparietal region; and group 4, in which markers were used, and a linear parasagittal craniectomy was performed with spring placement. All animals were killed at weeks 2, 4, 8, and 12. Radiologic control with cephalometric study was performed. Results: Distraction of amalgam markers in the groups with springs was greater than in those without springs. A proportional change in the angles measured through craniometry was observed in these groups. Conclusions: The experimental rabbit model was shown to be adequate to the analysis proposed by the study. Under the action of springs, the groups with sagittal and parasagittal osteotomy were found to present a similar distraction of amalgam markers. A concomitant change in cephalometric measurements occurred, suggesting a change in the skull base mediated by expansible springs placed both in the sutural and nonsutural sites.
Palavras-chave
Craniofacial surgery, distraction, rabbits, springs
URI
https://observatorio.fm.usp.br/handle/OPI/22484
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Coleções
Artigos e Materiais de Revistas Científicas - FM/MCG
Artigos e Materiais de Revistas Científicas - LIM/04