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An experimental model for the study of craniofacial deformities / Modelo experimental para o estudo de deformidades craniofaciais
Costa, André de Mendonça; Kobayashi, Gerson Shigeru; Bueno, Daniela Franco; Martins, Marília Trierveiler; Ferreira, Marcus de Castro; Passos-Bueno, Maria Rita; Alonso, Nivaldo.
  • Costa, André de Mendonça; University of Health Sciences. Plastic Surgeon. Alagoas. BR
  • Kobayashi, Gerson Shigeru; USP. Institute of Biosciences. BR
  • Bueno, Daniela Franco; USP. Institute of Biosciences. BR
  • Martins, Marília Trierveiler; USP. School of Dentistry. Department of Oral Pathology. BR
  • Ferreira, Marcus de Castro; FMUSP. Department of Surgery. Division of Plastic Surgery. Head of Plastic Surgery. BR
  • Passos-Bueno, Maria Rita; USP. Institute of Biosciences. BR
  • Alonso, Nivaldo; FMUSP. Department of Surgery. Division of Plastic Surgery. BR
Acta cir. bras ; 25(3): 264-268, May-June 2010. ilus
Article in English | LILACS | ID: lil-546832
ABSTRACT

PURPOSE:

To develop an experimental surgical model in rats for the study of craniofacial abnormalities.

METHODS:

Full thickness calvarial defects with 10x10-mm and 5x8-mm dimensions were created in 40 male NIS Wistar rats, body weight ranging from 320 to 420 g. The animals were equally divided into two groups. The periosteum was removed and dura mater was left intact. Animals were killed at 8 and 16 weeks postoperatively and cranial tissue samples were taken from the defects for histological analysis.

RESULTS:

Cranial defects remained open even after 16 weeks postoperatively.

CONCLUSION:

The experimental model with 5x8-mm defects in the parietal region with the removal of the periosteum and maintenance of the integrity of the dura mater are critical and might be used for the study of cranial bone defects in craniofacial abnormalities.
RESUMO

OBJETIVO:

Desenvolver um modelo experimental em ratos para o estudo de deformidades craniofaciais.

MÉTODOS:

Foram realizados defeitos ósseos de espessura total com diâmetro de 5 x 8 mm e 10 x 10mm na calota craniana em 40 ratos, machos, NIS Wistar, com peso de 320 a 420 g divididos igualmente em dois grupos. O periósteo foi retirado e a dura-máter mantida intacta. Os animais foram sacrificados na 8ª e 16ª semana de pós-operatório e amostras de tecido ósseo foram extraídas para realização da análise histológica.

RESULTADOS:

Os defeitos cranianos permaneceram abertos mesmo após 16 semanas após a cirurgia.

CONCLUSÃO:

O modelo experimental com defeitos de 5x8mm na região parietal, com remoção do periósteo e manutenção da integridade da dura-máter são considerados críticos, e poderá ser utilizado para o estudo dos defeitos ósseos cranianos nas anomalias craniofaciais.
Subject(s)

Full text: Available Index: LILACS (Americas) Main subject: Parietal Bone / Bone Regeneration / Models, Animal Type of study: Prognostic study Limits: Animals Language: English Journal: Acta cir. bras Journal subject: General Surgery / Procedimentos Cir£rgicos Operat¢rios Year: 2010 Type: Article Affiliation country: Brazil / Turkey Institution/Affiliation country: FMUSP/BR / USP/BR / University of Health Sciences/BR

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LIS

Full text: Available Index: LILACS (Americas) Main subject: Parietal Bone / Bone Regeneration / Models, Animal Type of study: Prognostic study Limits: Animals Language: English Journal: Acta cir. bras Journal subject: General Surgery / Procedimentos Cir£rgicos Operat¢rios Year: 2010 Type: Article Affiliation country: Brazil / Turkey Institution/Affiliation country: FMUSP/BR / USP/BR / University of Health Sciences/BR