AvaliaÃÃo das forÃas ortodÃnticas utilizando sensores de fibra Ãtica

AUTOR(ES)
DATA DE PUBLICAÇÃO

2008

RESUMO

Fibre Bragg gratings and polymer optical fibre sensors we used to investigate orthodontic forces. These sensors offer advantages for their use due to the reduced dimensions, chemical inertness, dielectric structure, high sensitivity and compatibility. The measured signal is the wavelength position of the peak in the optical reflection spectra of the Bragg sensor or changes in the intensity of the transmitted light in polymer fibre sensors, which are related to the transversal force applied on the tooth. The technique is tested in an artificial maxilla model, witch reproduces the orthodontic structure with the sensor placed between the metal tooth and the bracket. The results show forces intensity from 0,10 to 0,63N over the central incisor when FBGs is used and from 0,18 to 0,45N using a polymer fibre. The sensor can detect the dissipated forces in the orthodontic model. New fibre optic materials can offer promising improvement in the study of orthodontics forces, in vivo.

ASSUNTO(S)

ortodontia - equipamentos e acessÃrios orthodontia - equipment and supplies sensores Ãticos engenharia biomedica engenharia biomÃdica biomedical engineering optical sensors

ACESSO AO ARTIGO

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