Clinical assessment of early tooth demineralization using polarization sensitive optical coherence tomography

Louie, Tiffany M.; Lee, Chulsung; Hsu, Dennis J.; Hirasuna, Krista; Manesh, Saman K.; Staninec, Michal; Darling, Cynthia L.; Fried, Daniel

doi:10.1002/lsm.21013

Cited by 57 publications

(41 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…DeltaR has been shown to be a means of assessing enamel demineralization. 27 To further refine the measurement of assessing the effectiveness in detecting underlying scattering signal beneath a composite material, the %T parameter was created for this study. %T is merely the deltaR of the HA under the composite (ΔR hc ) divided by deltaR of the HA alone (ΔR ha ):…”

Section: Dental Resin Composite Imagingmentioning

confidence: 99%

Influence of dental resin material composition on cross-polarization-optical coherence tomography imaging

Lammeier

Lunos

et al. 2012

J. Biomed. Opt

View full text Add to dashboard Cite

Abstract. The purpose of this study was to investigate cross-polarization-optical coherence tomography (CP-OCT) signal attenuation through different resin material compositions. Four distinct composite systems were used: Filtek supreme ultra (FSU) (3M ESPE), IPS empress direct (EMD) (Ivoclar Vivadent), estelite sigma quick (SQK) (Tokuyama Dental), and Z100 (3M ESPE). Cross-sectional images of different composite-demineralized phantoms (n ¼ 108) were collected using a 1310-nm intraoral cross-polarization swept source OCT (CP-OCT) imaging system. %T quantified the CP-OCT signal attenuation. Scanning electron microscopy, transmission electron microscopy, and energy-dispersive x-ray spectrometer chemical analysis was utilized to determine how different matrix/filler compositions affected attenuation of the near infrared (NIR) signal. CP-OCT imaging of dental resin composites showed enormous variation in signal attenuation. For each of our composite systems, there was not a consistent attenuation difference in the NIR signal for A to D shades. The four composites had similar measured backscattering values but attenuated the overall signal to different degrees. When comparing the A2 shades between the four different composite systems, the order of highest to lowest of %T was EMD > Z100, FSU > SQK (ANOVA, Tukey, p < 0.0001). As a result, we demonstrate the importance of understanding how the constituents of composite materials affect CP-OCT signal attenuation.

show abstract

Section: Dental Resin Composite Imagingmentioning

confidence: 99%

Influence of dental resin material composition on cross-polarization-optical coherence tomography imaging

Lammeier

Lunos

et al. 2012

J. Biomed. Opt

View full text Add to dashboard Cite

show abstract

“…Regarding the experimental results of oral hard tissues, circular polarized light incidence is advantageous in comparison to linear polarized incident light 19,20,[33][34][35][36][37][38][39] since the fast or slow birefringent axis could coincide with the linear polarization undesirably resulting in the measurement of a strongly reduced or even no birefringence. 40 The additional information of retardation, optic axis orientation, and/or DOPU of the proposed method enables the precise local mapping of alterations to the surrounding inconspicuous birefringent tooth structures, which is highly recommended in future dental studies.…”

Section: Discussion and Summarymentioning

confidence: 99%

“…[10][11][12] An additional relevant parameter, the degree of polarization uniformity (DOPU), is based on averaged Stokes vector elements and proposed for imaging and segmentation of local variations of the polarization state 13,14 also known as depolarization or rather polarization scrambling as an intrinsic tissue property. 15 Equipped with these advancements, PS OCT is increasingly applied for medical diagnosis mainly in ophthalmology 9,[16][17][18] followed by dentistry, 19,20 cardiology, 6,21,22 and dermatology [23][24][25] with regard to the frequency of publications over the last years. 9 Although PS OCT has successfully shown to provide additional contrast for distinguishing pathological lesions from normal tissues, it has not been used much in the oral cavity.…”

Section: Introductionmentioning

confidence: 99%

“…While the measurement of the birefringent behavior of hard dental tissues by PS OCT is already addressed in biomedical research, [26][27][28] the polarization properties of oral soft tissue ex vivo and in vivo are investigated only by a few studies, [29][30][31][32] although the presented results show that it is worthwhile for quantitative imaging. Regarding dental PS OCT, most of the research is performed using linear incident light, 19,20,[33][34][35][36][37][38][39] in consequence of which the fast or slow birefringent axis could align with the linear polarization such that no or reduced birefringence is measured. 40 Although, first work of PS OCT in dentistry has used circular polarized light incidence 26,41 and considered the phase retardation 27,42 for imaging the birefringence in tooth structures, the argument for a single linear input state is the suppression of the Fresnel surface reflection in the crosspolarization channel.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

In vivo imaging of human oral hard and soft tissues by polarization-sensitive optical coherence tomography

et al. 2017

View full text Add to dashboard Cite

, "In vivo imaging of human oral hard and soft tissues by polarization-sensitive optical coherence tomography," J. Biomed. Opt. 22(12), 121717 (2017), doi: 10.1117/1.JBO.22.12.121717. Abstract. Since optical coherence tomography (OCT) provides three-dimensional high-resolution images of biological tissue, the benefit of polarization contrast in the field of dentistry is highlighted in this study. Polarization-sensitive OCT (PS OCT) with phase-sensitive recording is used for imaging dental and mucosal tissues in the human oral cavity in vivo. An enhanced polarization contrast of oral structures is reached by analyzing the signals of the co-and crosspolarized channels of the swept source PS OCT system quantitatively with respect to reflectivity, retardation, optic axis orientation, and depolarization. The calculation of these polarization parameters enables a high tissue-specific contrast imaging for the detailed physical interpretation of human oral hard and soft tissues. For the proof-of-principle, imaging of composite restorations and mineralization defects at premolars as well as gingival, lingual, and labial oral mucosa was performed in vivo within the anterior oral cavity. The achieved contrast-enhanced results of the investigated human oral tissues by means of polarizationsensitive imaging are evaluated by the comparison with conventional intensity-based OCT. © The Authors.Published by SPIE under a Creative Commons Attribution 3.0 Unported License. Distribution or reproduction of this work in whole or in part requires full attribution of the original publication, including its DOI.

show abstract

“…25 Although the current study only investigates ex vivo teeth, a similar approach was used. Figure 4(a) shows the clinical photograph of an MIH tooth with a diffuse T2 MIH lesion as an example for the correlation between these techniques.…”

Section: Correlation Between Histology and Opticalmentioning

confidence: 99%

Optical coherence tomography use in the diagnosis of enamel defects

et al. 2016

View full text Add to dashboard Cite

, "Optical coherence tomography use in the diagnosis of enamel defects," J. Biomed. Opt. 21(3), 036004 (), doi: 10.1117/1.JBO.21.3.036004. Abstract. Molar incisor hypomineralization (MIH) affects the permanent incisors and molars, whose undermineralized matrix is evidenced by lesions ranging from white to yellow/brown opacities to crumbling enamel lesions incapable of withstanding normal occlusal forces and function. Diagnosing the condition involves clinical and radiographic examination of these teeth, with known limitations in determining the depth extent of the enamel defects in particular. Optical coherence tomography (OCT) is an emerging hard and soft tissue imaging technique, which was investigated as a new potential diagnostic method in dentistry. A comparison between the diagnostic potential of the conventional methods and OCT was conducted. Compared to conventional imaging methods, OCT gave more information on the structure of the enamel defects as well as the depth extent of the defects into the enamel structure. Different types of enamel defects were compared, each type presenting a unique identifiable pattern when imaged using OCT. Additionally, advanced methods of OCT image analysis including backscattered light intensity profile analysis and enface reconstruction were performed. Both methods confirmed the potential of OCT in enamel defects diagnosis. In conclusion, OCT imaging enabled the identification of the type of enamel defect and the determination of the extent of the enamel defects in MIH with the advantage of being a radiation free diagnostic technique.

show abstract

Clinical assessment of early tooth demineralization using polarization sensitive optical coherence tomography

Cited by 57 publications

References 33 publications

Influence of dental resin material composition on cross-polarization-optical coherence tomography imaging

Influence of dental resin material composition on cross-polarization-optical coherence tomography imaging

In vivo imaging of human oral hard and soft tissues by polarization-sensitive optical coherence tomography

Optical coherence tomography use in the diagnosis of enamel defects

Contact Info

Product

Resources

About