SCIENTIFIC COMMITTEE:

University of Porto

Faculty of Dentistry Faculty of Engineering

Fernando Morais Branco Renato M. Natal JorgeAfonso Pinhão Ferreira João Manuel R. S. TavaresAntónio Felino Mário Augusto VazMário Jorge Silva António Torres MarquesReis Campos Joaquim Gabriel M. MendesHelena Figueiral Marco P. Lages ParenteJosé Lordelo António M. R. Aguiar VieiraMário Vasconcelos Manuel Paulo Sampaio Fernandes Paulo Melo João Carlos Pinho André Correia

Other Institutions

Alberto De Santis, Università degli Studi di Roma, ItáliaAmaya Pérez, University of Zaragoza, SpainAntónio Vasconcelos Tavares, Universidade de Lisboa, PortugalBegoña Calvo Calzada, University of Zaragoza, SpainBrian Walker, Advanced Technology & Research Group, Arup, UKCláudia Barros machado, CESPU, PortugalCornelia Kober, Hamburg University of Applied Sciences , GermanyDaniela Iacoviello, Sapienza University of Rome, ItalyDinggang Shen, University of Pennsylvania, USAEduardo Pires, Universidade Católica Portuguesa, PortugalElza Maria Morais Fonseca, Instituto Politécnico de Bragança, PortugalEstefânia Peña Baquedano ,University of Zaragoza, SpainEstevam Las Casas, Universidade Federal de Minas Gerais, BrazilFernanda Gentil, IDMEC - FEUP, PortugalFernando Alberto Deométrio R. Alves Guerra, University of Coimbra, PortugalGerhard A. Holzapfel, Graz University of Technology, AustriaGiuseppe Cevola, Politecnico di Milano, ItáliaHernani Miguel Reis Lopes, Instituto Politécnico de Bragança, PortugalIoannis Misirlis, University of Patras, GreeceJean-Daniel Orthlieb, Université De La Méditerranée, FranceJoão Batista Novaes Júnior, Universidade Federal de Minas Gerais, BrazilJoão Caramês, Universidade de Lisboa, PortugalJoão Eduardo P. C. Ribeiro, Instituto Politécnico de Bragança, PortugalJoão Paulo Flores Fernandes, University of Minho, PortugalJoaquim Merino, CESPU, PortugalJohn Middleton, Cardiff University, UKJohn W. Nicholson, University of Greenwich, UKJorge Julião, Universidade Católica Portuguesa, Portugal José Antonio de Oliveira Simões, University of Aveiro, PortugalJose M. García Aznar, University of Zaragoza, SpainJosep Torrent, Universitat de Barcelona, SpainKazem Alemzadeh, University of Bristol, UKLeopoldo Forner Navarro, Universitat de València, SpainLídia Carvalho, CESPU, PortugalLuís Pires Lopes, Universidade de Lisboa, PortugalM. Casimiro Milheiro, Dr. Campos Costa Imagiologia Clínica, PortugalManuel Doblaré, University of Zaragoza, SpainMarcos Pinotti Barbosa, Universidade Federal de Minas Gerais, BrazilMaria Cristina Manzanares Céspedes, Universitat de Barcelona, SpainMário Forjaz Secca, Universidade Nova de Lisboa, Portugal Michihiko KOSEKI, Tokyo Institute of Technology, JapanMildred Ballin Hecke, Universidade Federal do Paraná, BrasilNuno Rilo, University of Coimbra, PortugalOliver Röhrle,University of Stuttgart, GermanyPablo Jesús Rodríguez Cervantes, Universitat Jaume I, SpainPaulo Alexandre Gonçalves Piloto, Instituto Politécnico de Bragança, PortugalPaulo Rui Fernandes, Instituto Superior Técnico, PortugalPedro Miguel Gomes Nicolau, University of Coimbra, PortugalPhilippe G. Young, University of Exeter, UKRaul Vaz de Carvalho (CDI), dental practice, Portugal Roberto Maciel (CDI), Scientific consultor, Portugal Roberto Marcio de Andrade, Universidade Federal de Minas Gerais, BrazilRudolf Huebner, Universidade Federal de Minas Gerais, BrazilStephen Richmond, Cardiff University, UKYongjie (Jessica) Zhang, Carnegie Mellon University, USA

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BIODENTAL, Porto, Portugal, 26-27 June 2009

The thickness of the cortical bone in different maxillaries using medical images

1E.M.M. FONSECA, 2M.J.LIMA, 3J.K. Noronha, 4M.A.P. Vaz

1CENUME -IDMEC, Polo FEUP. Email: efonsecaGvipb.pt 1• 2Instituto Politécnico de Bragança, Bragança, Portugal

3Dr. Krug de Noronha, Porto, Portugal 4Faculdade de Engenharia da Universidade do Porto, Porto, Portugal

Abstract

The aim of the present study was to investigate whether there is a relationship between

the thicknesses of the cortical bone of mandible human and the age and the sex of

patient. ln this work the measure ofthe cortical bone thickness was obtained in different

computed tomography (CT) dental of medical images. Different human mandibles were

scanned using high resolution micro-CT instrument in which many axial slices were

obtained, see figure 1. Pixel by pixel for each slice and using image control system

software, different layers were measured. A total of four medical images were studied

and observed. Two different groups were characterized. The first one, with two female

mandibles (F): an old and a young patient. The second group of two males mandibles

_1), with similar age. A comparison between the male and female sex was also obtained.

The cortical bone thickness of the mandible may be affected by tooth extraction, age

~d sex patient. The use of this type of information is useful for complementary

-agnostic information and treatment planning.

- _. words: mandibles, maxillaries, cortical bone, CT.

F34 M43 M42

of mandibles and points for measure the cortical bone.

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BIODENTAL, Porto, Portugal, 26-27 June 2009

References

NataliA. N., "Dental biomechanics", Taylor & Francis, 2003.

Polat P., Ceylan G. , Suma S., Yanikoglu N., "The effects of tooth extraction on cortical thickness and bone mineral density of the mandible: evaluation with computerized tomography", Turk J Med Sei 31, pp.271-274, 2001.

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