Observation of white spot lesions using swept source optical coherence tomography (SS-OCT): &lt;i&gt;in vitro&lt;/i&gt; and &lt;i&gt;in vivo&lt;/i&gt; study

Ibusuki, Takahide; Kitasako, Yuichi; Sadr, Alireza; Shimada, Yasushi; Sumi, Yasunori; Tagami, Junji

doi:10.4012/dmj.2015-058

Cited by 20 publications

(19 citation statements)

References 34 publications

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“…2). Previous reports have shown that caries and white spots are depicted as increased brightness at the site but also show a decrease in brightness beneath the enamel lesion [18][19][20] . Further, it has been reported that the attenuation coefficient of the infrared region laser changes with the progression The dispersion intensity (ν 1 at 960 cm −1 ) was the strongest and showed a symmetrical peak.…”

Section: Discussionmentioning

confidence: 91%

“…Several OCT devices have been used for dentistry over the years [14][15][16] . SS-OCT has various applications in observing naturally occurring lesions, including enamel fissures, incipient enamel caries, and enamel white spot lesions [17][18][19][20][21] . The outer surface of the enamel is continuously cycling between demineralization and remineralization, and when this balance is disrupted, demineralization will progress and the tooth substance will be compromised 22) .…”

Section: Introductionmentioning

confidence: 99%

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Detection of enamel subsurface lesions by swept-source optical coherence tomography

et al. 2019

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This study aimed to non-destructively analyze the progression of subsurface enamel caries using swept-source optical coherence tomography (SS-OCT), a recently developed imaging analysis modality. Artificial enamel caries at various stages of demineralization were created in bovine tooth enamel using a modified lactic acid gel system. Untreated enamel served as a control. OCT images from cross-sections of enamel were collected. Mineral density, distribution, and histological changes were analyzed using an electron probe microanalyzer, scanning electron microscopy, and contact microradiography. The Raman spectrum and X-ray structural analysis of the enamel surfaces were determined. SS-OCT detected significant differences in mineral loss among the samples. A high-brightness image was confirmed, along with changes in the respective brightness graphs proportionate to the degree of demineralization. SS-OCT can potentially be used to evaluate the progression of incipient enamel carious lesions.

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Section: Discussionmentioning

confidence: 91%

Section: Introductionmentioning

confidence: 99%

Detection of enamel subsurface lesions by swept-source optical coherence tomography

et al. 2019

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“…16,20 The increased HIS200 at the enamel with low mineral loss appears to agree with a previous report of excellent SS-OCT detectability of early enamel demineralization. 32 It is well evidenced that because of the formation of numerous micro porosity created by mineral loss, 14 the scattering coefficient of demineralized enamel shows a 2 -3 fold increase over that of sound enamel. 16 Although the size of the demineralized pores was not measured in this experiment, Darling et al 30 demonstrated that the pores in demineralized lesions highly scattered light suggesting Mielike scatters.…”

Section: Discussionmentioning

confidence: 99%

Optical analysis of enamel and dentin caries in relation to mineral density using swept-source optical coherence tomography

et al. 2016

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, "Optical analysis of enamel and dentin caries in relation to mineral density using swept-source optical coherence tomography," J. Med. Imag. 3(3), 035507 (2016), doi: 10.1117/1.JMI.3.3.035507.Optical analysis of enamel and dentin caries in relation to mineral density using swept-source optical coherence tomography Abstract. The aim of this study was to evaluate the signal intensity and signal attenuation of swept source optical coherence tomography (SS-OCT) for dental caries in relation to the variation of mineral density. SS-OCT observation was performed on the enamel and dentin artificial demineralization and on natural caries. The artificial caries model on enamel and dentin surfaces was created using Streptococcus mutans biofilms incubated in an oral biofilm reactor. The lesions were centrally cross sectioned and SS-OCT scans were obtained in two directions to construct a three-dimensional data set, from the lesion surface (sagittal scan) and parallel to the lesion surface (horizontal scan). The integrated signal up to 200 μm in depth (IS200) and the attenuation coefficient (μ) of the enamel and dentin lesions were calculated from the SS-OCT signal in horizontal scans at five locations of lesion depth. The values were compared with the mineral density obtained from transverse microradiography. Both enamel and dentin demineralization showed significantly higher IS200 and μ than the sound tooth substrate from the sagittal scan. Enamel demineralization showed significantly higher IS200 than sound enamel, even with low levels of demineralization. In demineralized dentin, the μ from the horizontal scan consistently trended downward compared to the sound dentin.

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“…Optical coherence tomography (OCT) is a non-ionizing tissue imaging modality based on reflectivity and phase retardation by tissue surfaces. It has been used in medicine and demonstrated a great promise in assessing early caries [20][21][22][23]. The technique, as it was said earlier in this text, is based on coherent back-scattered light changes in refractive index as the light encounters different tissue types or structures (e.g.…”

Section: Polarization -Sensitive Optical Coherence Tomography (Oct)mentioning

confidence: 98%

Contemporary Advanced Methods for Early Caries Detection and Diagnosis

2017

IJSR

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Nowadays it is apparent that the conventional methods for early caries detection do not fulfill the criteria for the ideal clinical methods (and also to be used in scientific studies). In this regard they are subjective and insensitive. In this point it is of paramount importance to develop novel detecting techniques, which will be promising quantitative detecting methods of early caries lesions. In this assumption there are new technologies and devices for detection and diagnosis of dental lesions at their early stages of formation, evaluating their activity with higher sensitivity and specificity. Some of these devices are developed and commercially available, others are still under development. Consequently, there some creative contemporary methods and devices with great theoretical impact and exceptional practical preferences as diagnostic techniques and methods are presented: i/ the technique of optical coherence tomography (OCT), ii/ polarized Raman spectroscopy (PRS).

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Observation of white spot lesions using swept source optical coherence tomography (SS-OCT): <i>in vitro</i> and <i>in vivo</i> study

Cited by 20 publications

References 34 publications

Detection of enamel subsurface lesions by swept-source optical coherence tomography

Detection of enamel subsurface lesions by swept-source optical coherence tomography

Optical analysis of enamel and dentin caries in relation to mineral density using swept-source optical coherence tomography

Contemporary Advanced Methods for Early Caries Detection and Diagnosis

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