Development of an experimental optoelectronic device to study the amplitude of mandibular movements

Missaka, Reinaldo; Adachi, Lena Katekawa; Tamaki, Regina; Shinkai, Rosemary Sadami Arai; Campos, Tomie Nakakuki de; Horikawa, Oswaldo

doi:10.1590/s1806-83242008000200010

Cited by 4 publications

(3 citation statements)

References 14 publications

(20 reference statements)

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“…While inertial technology is typically unaffected by external interference, it is also typically applied to the measurement of large object movement and is therefore not suitable for oral medical application. While ultrasonic technology can be used to study mandibular movement with high accuracy [ 12 ], other methods, such as X-ray measurement, may be too harmful or may otherwise be inappropriate for this application [ 13 ].…”

Section: Discussionmentioning

confidence: 99%

A Method of Three-Dimensional Recording of Mandibular Movement Based on Two-Dimensional Image Feature Extraction

Yuan

Sui

et al. 2015

PLoS ONE

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Background and ObjectiveTo develop a real-time recording system based on computer binocular vision and two-dimensional image feature extraction to accurately record mandibular movement in three dimensions.MethodsA computer-based binocular vision device with two digital cameras was used in conjunction with a fixed head retention bracket to track occlusal movement. Software was developed for extracting target spatial coordinates in real time based on two-dimensional image feature recognition. A plaster model of a subject’s upper and lower dentition were made using conventional methods. A mandibular occlusal splint was made on the plaster model, and then the occlusal surface was removed. Temporal denture base resin was used to make a 3-cm handle extending outside the mouth connecting the anterior labial surface of the occlusal splint with a detection target with intersecting lines designed for spatial coordinate extraction. The subject's head was firmly fixed in place, and the occlusal splint was fully seated on the mandibular dentition. The subject was then asked to make various mouth movements while the mandibular movement target locus point set was recorded. Comparisons between the coordinate values and the actual values of the 30 intersections on the detection target were then analyzed using paired t-tests.ResultsThe three-dimensional trajectory curve shapes of the mandibular movements were consistent with the respective subject movements. Mean XYZ coordinate values and paired t-test results were as follows: X axis: -0.0037 ± 0.02953, P = 0.502; Y axis: 0.0037 ± 0.05242, P = 0.704; and Z axis: 0.0007 ± 0.06040, P = 0.952. The t-test result showed that the coordinate values of the 30 cross points were considered statistically no significant. (P<0.05)ConclusionsUse of a real-time recording system of three-dimensional mandibular movement based on computer binocular vision and two-dimensional image feature recognition technology produced a recording accuracy of approximately ± 0.1 mm, and is therefore suitable for clinical application. Certainly, further research is necessary to confirm the clinical applications of the method.

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Section: Discussionmentioning

confidence: 99%

A Method of Three-Dimensional Recording of Mandibular Movement Based on Two-Dimensional Image Feature Extraction

Yuan

Sui

et al. 2015

PLoS ONE

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“…Pela análise dos deslocamentos no plano horizontal, ou seja, no eixo Y, o ponto P1 sofreu um pequeno deslocamento de cerca de 1,0 mm de lateral para medial e o ponto P3, no mesmo sentido, de cerca de 1,5 mm. Miluzzi (1977), Baragar e Osborn (1984), Zhang et al (1995), Lindauer et al (1995), Missaka (2008), Khonsari et al (2003). Moss (1983) Khonsari et al (2003).…”

Section: Aquisição E Processamento De Imagensunclassified

Centros instantâneos de rotação mandibular por meio de processamento de imagem obtida por metodologia optoeletrônica

Missaka¹

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“…Já autores como Liu et al (2007), demonstraram a eficácia e precisão do uso de sistemas de captura de movimentos com sensores ópticos de diamante e esféricos utilizando o sistema de análise de movimento Qualisys ProReflex-MCU120. Mani (2009) utilizou um sistema de captura de movimento Qualisys para medir o movimento de marcadores reflexivos bilaterais colocados sobre a articulação mastóide, articulação temperomandibular (ATM), ângulo das regiões mandibular e mentual, hióide e cricóide.…”

Section: Revisão Da Literaturaunclassified

Dispositivo oral para captação de imagens tridimensionais

Carvalho¹

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Dedico à minha família, que sempre ao meu lado foi o alicerce da minha grandeza e evolução nesta vida. Amo-os eternamente. AGRADECIMENTOSE por mais que a vida me ensinou ainda vivo a aprender.Aos meus pais João e Elcinéa, tudo foi por vocês, chegar além dos meus limites e sonhos só foi possível com a confiança e amor eterno que me deram.À Faculdade de Odontologia de Piracicaba, da Universidade de Campinas -FOP-UNICAMP, pela oportunidade concebida de me tornar melhor e adquirir conhecimentos para a eternidade.Ao meu amigo, mestre, orientador, conselheiro e professor, Dr. Fausto Bérzin pelos ensinamentos, orientação e por sempre acreditar e defender seus alunos, buscando o nível mais elevado do potencial de cada um. Professor, meus agradecimentos seriam infindáveis, deixo então minha eterna gratidão.À professora Graça, que com tanto amor nos acolheu e em sua caridade e carisma nos mostrou o sentido da palavra carinho, meu abraço mais fraterno.À minha família, que por todos os dias sou grato pelo apoio e amor incondicional.A vocês devo minhas forças e caráter. À minha avó Julieta, que em sua sabedoria infinita, depositou suas orações e fé em um futuro por ela já conhecido. Vovó, cada prece foi ouvida e todas atendidas.Às projeções do futuro familiar, sobrinhas Clarice e Catarina, o padrinho fará sempre o melhor para vocês.À minha irmã e cunhado, Maíra e Danilo, obrigado pelo apoio e ajuda nos momentos difíceis.Aos meus amigos e colegas de Piracicaba, Carol,

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Development of an experimental optoelectronic device to study the amplitude of mandibular movements

Cited by 4 publications

References 14 publications

A Method of Three-Dimensional Recording of Mandibular Movement Based on Two-Dimensional Image Feature Extraction

A Method of Three-Dimensional Recording of Mandibular Movement Based on Two-Dimensional Image Feature Extraction

Centros instantâneos de rotação mandibular por meio de processamento de imagem obtida por metodologia optoeletrônica

Dispositivo oral para captação de imagens tridimensionais

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