Peri-orbital bone dimensional analysis using computed tomography for placement of osseointegrated implants

Authors

  • Clemente Maia S. Fernandes São Paulo State University - UNESP
  • Beatriz Silva Câmara Mattos University of São Paulo
  • Marcelo de Gusmão Paraíso Cavalcanti University of São Paulo
  • Luciana Cardoso Fonseca Catholic University of Minas Gerais
  • Mônica da Costa Serra ão Paulo State University - UNESP

DOI:

https://doi.org/10.20396/bjos.v11i1.8641452

Keywords:

Orbit, CT scan, Craniofacial rehabilitation, Osseointegrated implants, Measurement

Abstract

Craniofacial osseointegrated implants enabled producing implant-retained facial prosthesis, namely the orbital prosthesis. Aim: To evaluate the length and width of the bone structure of the peri-orbital region and to present the method validation. Methods: Computed tomography scans of 30 dry human skulls were obtained in order to register linear length and width measurements of the periorbital region. Two examiners made the measurements twice with intervals of at least 7 days between them. Data were analyzed by descriptive statistics and the paired Student’s t-test was used as inferential technique (SAS, α=0.05). Results: In most cases, the intra- and inter-examiner variations were not significant (p>0.05). Therefore, the method proposed was considered as precise and valid for the measurement of the peri-orbital region. The measured points correspond to the hours of a clock. The major lengths were observed at 1 h (18.32 mm) for the left peri-orbital bone and at 11h (19.28 mm) for the right peri-orbital bone, followed by the points situated at 2h (13.05 mm) and 12h (11.37 mm) for the left side and at 10 h (12.34 mm) and 12 h (11.56 mm) for the right side. It was verified that the three points with lowest values followed the same anatomical sequence in the supraorbital rim for the right and left orbits, showing compatibility with the insertion of the intraoral osseointegrated implants. The medial wall of both orbits did not present sufficient length to allow the insertion of intraoral or craniofacial implants. Conclusions: The largest width points were observed in the supraorbital rim and in the infralateral region of both orbits and those of smallest width were found in the supralateral region of both orbits.

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Author Biographies

Clemente Maia S. Fernandes, São Paulo State University - UNESP

DDS, LL.B student, MSc, PhD, Post-doctorate student, Department of Social Dentistry, Faculty of Dentistry of Araraquara, São Paulo State University - UNESP

Beatriz Silva Câmara Mattos, University of São Paulo

DDS, MSc, PhD, Department of Maxillofacial Surgery, Prosthodontics and Traumatology, School of Dentistry, University of São Paulo

Marcelo de Gusmão Paraíso Cavalcanti, University of São Paulo

DDS, MSc, PhD, Post-Doctor, Department of Stomatology, School of Dentistry, University of São Paulo

Luciana Cardoso Fonseca, Catholic University of Minas Gerais

DDS, MSc, PhD, Department of Oral Diagnosis, School of Dentistry, Catholic University of Minas Gerais

Mônica da Costa Serra, ão Paulo State University - UNESP

DDS, LL.B, MSc, PhD, Post-Doctor, Department of Social Dentistry, Faculty of Dentistry of Araraquara, São Paulo State University - UNESP

Published

2015-11-03

How to Cite

1.
Fernandes CMS, Mattos BSC, Cavalcanti M de GP, Fonseca LC, Serra M da C. Peri-orbital bone dimensional analysis using computed tomography for placement of osseointegrated implants. Braz. J. Oral Sci. [Internet]. 2015 Nov. 3 [cited 2022 Oct. 1];11(1):1-9. Available from: https://periodicos.sbu.unicamp.br/ojs/index.php/bjos/article/view/8641452

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