Tissue repair after orbital reconstruction using polypropylene mesh implants: A histological study in dogs

  • Elvidio de Paula e Silva Hospital de Base do Distrito Federal
  • Orlando Ayrton de Toledo Universidade de Brasília
Keywords: Polypropylene mesh, orbital reconstruction, orbital trauma, alloplastic implant

Abstract

Purpose: This experimental study aimed to assess the histological outcomes of orbit reconstruction with a polypropylene mesh implant in an animal model using dogs. Methods: The right and left orbits of 12 dogs were fractured in order to simulate orbital fractures similar to those occurring in humans as a result of trauma. The orbits were reconstructed with a polypropylene mesh positioned approximately 10 mm beyond the bone defect borders. The 24 orbits were divided into four groups of six: one group was given one polypropylene mesh layer; another group received two layers; a third group was given three polypropylene mesh layers; and the fourth group did not receive any implant (control group). The dogs were divided into clusters of four animals and were euthanized 15, 30,or 60 days after the surgery. The orbit medial wall was removed, and samples were subjected to histological polypropylene mesh analysis by optical microscopy. Data were analyzed using a non-parametric test with a 5% level of significance. Results: It was found that the polypropylene mesh caused a mild to moderate tissular reaction. Conclusion: The implant was well tolerated even with two or three overlapping layers.

Author Biographies

Elvidio de Paula e Silva, Hospital de Base do Distrito Federal
Dentista formado pela Faculdade de Odontologia de Anápolis, Especialista em Cirurgia Bucomaxilofacial pelo Curso de Odontologia das Faculdades Integradas do Planalto Central, Residencia em Bucomaxilofacial no Hospital Universitádio Pedro Ernesto (UERJ), Mestrado em Ciência da Saúde pela Universidade de Brasília.
Orlando Ayrton de Toledo, Universidade de Brasília
Department of Dentistry, University of Brasilia (UnB), Brasilia, DF, Brazil
Published
2009-05-28
Section
Original Article