a system for analysis of the 3d mandibular …tavares/downloads/publications/...a system for...
TRANSCRIPT
A System for Analysis of the 3D MandibularMovement using Magnetic Sensors and Neuronal Networks
Workshop:
Artificial Neural Networks and Intelligent Information Processing (ANNIIP)
Isa Cristina Teixeira Santos (FEUP)João Manuel R. S. Tavares (FEUP)Joaquim Gabriel Mendes (FEUP)Manuel Pedro da Fonseca Paulo (FMDUP)
Outline
Mandibular movement
Product development
Conclusions
Temporomandibular joint
A System for Analysis of the 3D Mandibular Movement using Magnetic Sensors and Neuronal Networks ICINCO
Future work
Cervical pain
Problems
Temporomandibular Joint
Esthetics
Unequal development of the muscles
Wear of the teeth
Loss of teeth
Articulation pain
Ear pain
A System for Analysis of the 3D Mandibular Movement using Magnetic Sensors and Neuronal Networks ICINCO
Unequal development of the muscles
Wear of the teeth
Loss of teeth
Articulation pain
Ear pain
Cervical painArticular noises
Problems
Temporomandibular Joint
A System for Analysis of the 3D Mandibular Movement using Magnetic Sensors and Neuronal Networks ICINCO
Myalgias in the masticator muscles
Wear of the teeth
Loss of teeth
Articulation pain
Ear pain
Cervical pain
Articular noises
Problems
Temporomandibular Joint
A System for Analysis of the 3D Mandibular Movement using Magnetic Sensors and Neuronal Networks ICINCO
Loss of teeth
Articulation pain
Ear pain
Cervical pain
Articular noises
Myalgias in the masticator musclesAnomalies in the mandibularmovement
Problems
Temporomandibular Joint
A System for Analysis of the 3D Mandibular Movement using Magnetic Sensors and Neuronal Networks ICINCO
Dysfunctions related with the articulation
Oclusal interference
Fractures
Muscular paralysis
Aids the study of the condilar movement, the speak and chewing
Mandibular Movement
A System for Analysis of the 3D Mandibular Movement using Magnetic Sensors and Neuronal Networks ICINCO
Eixo de rotação
Eixo de rotação e fecho
D
Projection on the Sagital Plan Projection on the Horizontal Plan
Mandibular Movement
A System for Analysis of the 3D Mandibular Movement using Magnetic Sensors and Neuronal Networks ICINCO
Product Development
Support structure
Redesign
Support for the sensors
Software application
Sensors
Neural network
A System for Analysis of the 3D Mandibular Movement using Magnetic Sensors and Neuronal Networks ICINCO
Sensors and Magnet
A magnet piece is positioned inside the patient mouth
Three electromagnetic sensors are used for the 3D movement acquisition
A System for Analysis of the 3D Mandibular Movement using Magnetic Sensors and Neuronal Networks ICINCO
Facial Arc Arcus
The facial arc Arcus, from Kavus, is used as the main support structure
A System for Analysis of the 3D Mandibular Movement using Magnetic Sensors and Neuronal Networks ICINCO
Facial Arc Arcus
3D modeling of the facial arc Arcus
A System for Analysis of the 3D Mandibular Movement using Magnetic Sensors and Neuronal Networks ICINCO
Redesign
Redesign of the auricular pieces of the facial arc Kavus
Materialization of the new pieces done by rapid prototyping
A System for Analysis of the 3D Mandibular Movement using Magnetic Sensors and Neuronal Networks ICINCO
Support for the Sensors
Support design for the sensors used
A System for Analysis of the 3D Mandibular Movement using Magnetic Sensors and Neuronal Networks ICINCO
Support for the Sensors
Materialization of the support for the electromagnetic sensors done by rapid prototyping
A System for Analysis of the 3D Mandibular Movement using Magnetic Sensors and Neuronal Networks ICINCO
Acquisition System
Acquisition device and power source used in our prototype
A System for Analysis of the 3D Mandibular Movement using Magnetic Sensors and Neuronal Networks ICINCO
Software Application
Software developed in LabView to visualize and analyze the 3D movement acquired in a PC
A System for Analysis of the 3D Mandibular Movement using Magnetic Sensors and Neuronal Networks ICINCO
Neural Networks
A neural network is used to do the conversion: voltages / coordinates
We used a radial basis neural network built using Matlab
The neural network was integrated in our software application using LabVIEW
A System for Analysis of the 3D Mandibular Movement using Magnetic Sensors and Neuronal Networks ICINCO
Neural Networks
The neural network used was training using a calibration setup built
A System for Analysis of the 3D Mandibular Movement using Magnetic Sensors and Neuronal Networks ICINCO
Prototype system
Our prototype system for acquiring and analyze the 3D Mandibular Movement
A System for Analysis of the 3D Mandibular Movement using Magnetic Sensors and Neuronal Networks ICINCO
Our prototype system is:
Easy to use
Comfortable for the patients and practical for the users
Small and light
Conclusions
With a pleasant design
Has adequate precision and can be produced at low price
The electromagnetic sensors used proved to be suitable for this application
The neural network used was essential to obtain the coordinates from the electrical signals of the sensors
A System for Analysis of the 3D Mandibular Movement using Magnetic Sensors and Neuronal Networks ICINCO
Some perspectives of future work are:
Clinical validation: the use of our prototype in various medical exams
Future Work
Neuronal networks: the study of the employment of more complex neural networks to have a more precise conversion and interpolation
More applications: export the exam data acquired to some standard articulators systems; and animation of virtual mandibles using the movement acquired
A System for Analysis of the 3D Mandibular Movement using Magnetic Sensors and Neuronal Networks ICINCO
Thank you very much for your attention!
A System for Analysis of the 3D MandibularMovement using Magnetic Sensors and Neuronal Networks
Isa Cristina Teixeira Santos (FEUP)João Manuel R. S. Tavares (FEUP)Joaquim Gabriel Mendes (FEUP)Manuel Pedro da Fonseca Paulo (FMDUP)
Workshop:
Artificial Neural Networks and Intelligent Information Processing (ANNIIP)