Early dental caries detection by fluorescence spectroscopy

Bakhmutov, D; Гончуков, С. А.; Kharchenko, О. V.; Nikiforova, O. Yu.; Vdovin, Yu. A.

doi:10.1002/lapl.200410121

Cited by 27 publications

(26 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It could be very interesting develop other experiment using different pulse width at near infrared spec-tral band, indeed submitting to a detection by fluorescence spectroscopy, as some papers have demonstrated [20,21].…”

Section: Discussionmentioning

confidence: 97%

Enamel caries resistance accidentally irradiated by the Nd:YAG laser

et al. 2007

View full text Add to dashboard Cite

When the carious tissue is eliminated either by conventional methods (with burs) or with lasers, the risk of accidentally damage the surface of adjacent teeth may occur, which hypothetically could lead to a more susceptible surface for caries formation. This in vitro study aims to evaluate the caries resistance of the dental enamel surface irradiated by the Nd:YAG laser applied in conditions simulating accidental exposition. Thirteen third molars were used in this study. The experimental groups were: G1: sound control and control + carious; G2: contact Nd:YAG laser at 0.75, 1, 2, or 3 W; 10 Hz; 3 sec (27, 35, 71, and 106 J/cm 2 ); G3: same parameters from G2 + caries artificial induction through the demineralization and demineralization (DES/RE) dynamic model. The caries resistance analysis was evaluated by the superficial morphological aspect through SEM images and also by Ca/P proportion through energy dispersive X-ray spectroscopy (EDX). The micrograph images showed that the Nd:YAG laser changed the normalmorphology of the enamel prisms resulting in a melted and re-solidified surface intensified with the power increase. Significant statistical differences were observed applying the Kruskal-Wallis statistical test (p ≤ 0.01) among the Nd:YAG laser irradiated groups and the control with caries regarding the Ca/P proportion. As an exception, this was not observed when 3 W; 10 Hz; 3 sec; 106 J/cm 2 was applied and posteriously submitted to a cariogenic challenge. The results indicate that the Nd:YAG laser accidental irradiation at low power settings did not represent risks to the enamel caries resistance.

show abstract

Section: Discussionmentioning

confidence: 97%

Enamel caries resistance accidentally irradiated by the Nd:YAG laser

et al. 2007

View full text Add to dashboard Cite

show abstract

“…However many endogenous fluorescent substances are contained in teeth. Most of them (oxidated flavins, elastins, collagens) are induced by ultraviolet radi- [1,4,10,11]. Fluorescence is also possible if there are some defects in the crystal.…”

Section: Introductionmentioning

confidence: 98%

Early caries naked-eyed examination

et al. 2008

Self Cite

View full text Add to dashboard Cite

Abstract:In view of its potential for dental diagnostics, noninvasive optical methods have been the object of research for the last years. Different techniques (spectroscopy, microscopy, and tomography) are used to discriminate between caries and sound enamel. The main aim of this paper is to determine a simple way to see incipient caries with the naked eye. Relative parties R of fluorescence intensities from the sound enamel (squares) and white spots (rings) as a function of excitation wavelength λexc

show abstract

“…These interactions are governed by laser parameters (wavelength, repetition rate, pulse energy, and spatial and temporal characteristics), as well as tissue optical properties (refractive index, scattering and absorption coefficients, and scattering anisotropy) [12]. Many optical detection techniques are built on these process outcomes, as photoacoustic, fluorescence, and Raman Spectroscopy measurements, having the ability to characterize the irradiated tooth sample from the molecular point of view [13][14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Classification of human teeth caries using custom non-invasive optical imaging system

2017

View full text Add to dashboard Cite

Purpose Caries status detection and classification in its early stages is an essential process for a precise, less pain caries removal procedure. The aim of this work was to reveal and classify different caries degree status via an optical imaging system interfaced with Pc, and controlled by an inspection algorithm using DSP 6 software. Methods This work presents a 635-nm He-Ne laser-tissue interaction mechanism for human teeth characterization. Spectroscopic measurement for both sound and caries teeth lesion area was used to estimate the averaged optical properties. One-layer Monte Carlo model is implemented for sound, and caries lesion separately to optimize the source detector position with respect to the sample. Captured images were further processed by the designed inspection algorithm based on a Hilbert transform edge detection technique. Results The proposed optical imaging system was able to discriminate between the examined 12 tooth samples into sound and caries according to optical properties calculated from the spectroscopy measurements, where the reflectance, transmittance, and absorbance of the sound tooth was T n = 68%, R n = 23%, and A n = 0.47 o.d., respectively. In contrast, for caries values, T c reached 30%, R c = 5.2%, and A c = 1.6 o.d. Caries degrees inside cavity lesion were classified by the designed inspection algorithm into sound, moderate, and severe degree. Conclusions This study reveals the ability of the real-time, non-invasive custom optical imaging system to differentiate between sound and caries lesion teeth, in addition to classifying caries degree from images processed by the 2-D Hilbert transform inspection algorithm.

show abstract

Early dental caries detection by fluorescence spectroscopy

Cited by 27 publications

References 4 publications

Enamel caries resistance accidentally irradiated by the Nd:YAG laser

Enamel caries resistance accidentally irradiated by the Nd:YAG laser

Early caries naked-eyed examination

Classification of human teeth caries using custom non-invasive optical imaging system

Contact Info

Product

Resources

About