Characteristics of subgingival calculus detection by multiphoton fluorescence microscopy

Tung, Oi Hong; Lee, Shyh Yuan; Lai, Yung‐Lien; Chen, How Foo

doi:10.1117/1.3593150

Cited by 12 publications

(11 citation statements)

References 15 publications

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“…69 The detection of subgingival calculus employing a multiphoton autofluorescence imaging method was characterized in comparison with a onephoton confocal fluorescence imaging technique. 63 The multiphoton fluorescence technology perceived the tissue-covered subgingival calculus that could not be observed by the onephoton confocal fluorescence method.…”

Section: Fluorescence Of Dental Calculusmentioning

confidence: 99%

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Fluorescence properties of human teeth and dental calculus for clinical applications

Lee¹

2015

J. Biomed. Opt

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Abstract. Fluorescent emission of human teeth and dental calculus is important for the esthetic rehabilitation of teeth, diagnosis of dental caries, and detection of dental calculus. The purposes of this review were to summarize the fluorescence and phosphorescence of human teeth by ambient ultraviolet (UV) light, to investigate the clinically relevant fluorescence measurement methods in dentistry, and to review the fluorescence of teeth and dental calculus by specific wavelength light. Dentine was three times more phosphorescent than enamel. When exposed to light sources containing UV components, the fluorescence of human teeth gives them the quality of vitality, and fluorescent emission with a peak of 440 nm is observed. Esthetic restorative materials should have fluorescence properties similar to those of natural teeth. Based on the fluorescence of teeth and restorative materials as determined with a spectrophotometer, a fluorescence parameter was defined. As to the fluorescence spectra by a specific wavelength, varied wavelengths were investigated for clinical applications, and several methods for the diagnosis of dental caries and the detection of dental calculus were developed. Since fluorescent properties of dental hard tissues have been used and would be expanded in diverse fields of clinical practice, these properties should be investigated further, embracing newly developed optical techniques.

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Section: Fluorescence Of Dental Calculusmentioning

confidence: 99%

“…63 Successful periodontal therapy requires sensitive techniques to discriminate dental calculus from healthy teeth. 51 Therefore, the possibility of detecting subgingival calculus should be evaluated to control complete calculus removal after scaling and root planing.…”

Section: Fluorescence Of Dental Calculusmentioning

confidence: 99%

Fluorescence properties of human teeth and dental calculus for clinical applications

Lee¹

2015

J. Biomed. Opt

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“…Improved visualization of that calculus is important for both monitoring and complete removal. Several approaches have been used to image calculus including fluorescence-based methods [1][2][3][4][5][6][7][8][9][10], Raman spectroscopy [11][12][13] and optical coherence tomography (OCT) [11,[14][15][16]. Near-infrared (NIR) reflectance imaging at longer wavelengths is also advantageous for imaging dental calculus or mineralized dental plaque on tooth surfaces due to the lack of interference of stains and the higher light scattering of mineralized plaque [16].…”

Section: Introductionmentioning

confidence: 99%

Image‐Guided Ablation of Dental Calculus From Root Surfaces Using a DPSS Er:YAG Laser

et al. 2019

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Background and Objectives Recent studies have demonstrated that near‐infrared (IR) imaging can be used to acquire high‐contrast images of root caries and calculus on the root surfaces of extracted teeth at wavelengths longer than 1450 nm. The purpose of this study was to determine if image‐guided laser ablation can be used to selectively remove calculus from tooth surfaces with minimal damage to the underlying sound cementum and dentin. Materials and Methods In this study, sequential near‐IR images at 1500–1700 nm were used to guide a diode‐pumped (DPSS) Er:YAG laser for the removal of calculus from the root surfaces of 10 extracted teeth. The selectivity of removal was assessed using digital microscopy, optical coherence tomography, and surface profilometry. Results Calculus was removed rapidly with minimal damage to the underlying sound cementum and dentin. Image‐guided ablation achieved high‐selectivity, the mean volume of calculus removal was more than 27 times higher than the mean loss of cementum. Conclusions We have demonstrated that near‐IR image‐guided laser ablation can be used for the selective removal of calculus from root surfaces ex vivo. Additionally, we have demonstrated that a diode‐pumped solid‐state Er:YAG laser is well suited for selective removal. Lasers Surg. Med. © 2019 Wiley Periodicals, Inc.

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“…Better visualization of that calculus is important for monitoring its extent and for facilitating its removal. Fluorescence‐based imaging systems and OCT have been investigated for imaging dental calculus. NIR reflectance imaging at longer wavelengths may also be advantageous for imaging dental calculus or mineralized dental plaque on tooth surfaces due to the lack of interference of stains and the higher light scattering of mineralized plaque.…”

Section: Introductionmentioning

confidence: 99%

Cross‐polarization reflectance imaging of root caries and dental calculus on extracted teeth at wavelengths from 400 to 2350 nm

Yang

Curtis

Fried

2018

Journal of Biophotonics

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The identification of root caries and calculus on tooth roots is of increasing importance with our aging population. Exposed root surfaces are often impacted by erosion, abrasion, calculus and staining which can make the identification and management of caries challenging. Identification of dental calculus on root surfaces and verification of its removal is also important for patient education and to decrease susceptibility to caries and periodontal disease. The objective of this study was to determine how the contrast of root caries lesions and dental calculus varies with wavelength in the visible to near-infrared. The contrast of suspected root caries lesions and dental calculus on 30 extracted teeth was measured using cross-polarization reflectance measurements at wavelengths from 400 to 2350 nm. Significantly higher (P < 0.05) lesion contrast was measured at wavelengths greater than 1460 nm. Stains interfered significantly at wavelengths less than 850 nm yielding non-diagnostic contrast for root caries lesions. We postulate that the high absorption of water at longer wavelengths reduced the light scattering from the surrounding and underlying normal dentin, thus increasing the lesion contrast. This study indicates that wavelengths beyond 1400 nm are advantageous for imaging calculus and caries lesions on root surfaces due to the high contrast and lack of interference from stain.

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Characteristics of subgingival calculus detection by multiphoton fluorescence microscopy

Cited by 12 publications

References 15 publications

Fluorescence properties of human teeth and dental calculus for clinical applications

Fluorescence properties of human teeth and dental calculus for clinical applications

Image‐Guided Ablation of Dental Calculus From Root Surfaces Using a DPSS Er:YAG Laser

Cross‐polarization reflectance imaging of root caries and dental calculus on extracted teeth at wavelengths from 400 to 2350 nm

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