Imagin carious human dental tissue with three-dimensional optical coherence tomography
Carregando...
Data
Data de publicação
Orientador
Título da Revista
ISSN da Revista
Título do Volume
É parte de
É parte de
É parte de
Brazilian Dental Journal
Exportar
Resumo
Optical Coherence Tomography (OCT) used in this study, is a
new non invasive optical detection technique. The OCT system
is based on a Michelson interferometer, that generates a crosssectional
image of the teeth with resolution up to 2 microns. The
buccal surface from the third molar teeth was used to induce
caries like lesions. This surface was coated with an acid resistant
nail varnish except a small window. The pH demineralizationremineralization
cycling model was used to produce the lesions.
This cycle was repeated for 9 days and remained in the remineralizing
solution for 2 days. The OCT system was implemented by
using an ultrashort pulse laser (Ti:Al2O3@830nm) with 50fs of
pulse width and average power of 80mW. The laser beam was
focused into the teeth providing a lateral resolution of 10
microns. Image was produced with a lateral and axial scans steps
of 10 microns. After analyzing the surface by OCT it was possible
to produce a tomogram of dentine-enamel junction and it was
compared with the histological image. This OCT system accurately
depicts dental tissue and it was able to detect early caries
in its structure, providing a powerful contactless high resolution
3D images of lesions.
Como referenciar
FREITAS, A.Z.; ZEZELL, D.M.; RIBEIRO, A.C.; GOMES, A.S.L.; VIEIRA, N.D. Imagin carious human dental tissue with three-dimensional optical coherence tomography. Brazilian Dental Journal, v. 15, p. 79-79, 2004. Special issue. Disponível em: http://repositorio.ipen.br/handle/123456789/32735. Acesso em: 20 Mar 2026.
Esta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.