The Effectiveness of InGaAsP Diode Laser Radiation to Detect Subgingival Calculus as Compared to an Explorer

Folwaczny, Matthias; Heym, Richard; Mehl, Albert; Hickel, Reinhard

doi:10.1902/jop.2004.75.5.744

Cited by 26 publications

(30 citation statements)

References 19 publications

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“…The challenge with the VistaCam device in its current optical configuration is that it is not designed for use in the periodontal pocket environment, but if suitable changes were made in this direction, the results from this study show promise for its eventual use for guiding clinicians in the detection of subgingival calculus. The overall approach then would be similar to using laser fluorescence to inform the decision around stopping or continuing subgingival calculus debridement (Folwaczny, Heym, Mehl, & Hickel, 2002; Krause, Braun, & Frentzen, 2003; Folwaczny, Heym, Mehl, & Hickel, 2004; Shakibaie & Walsh, 2012). …”

Section: Discussionmentioning

confidence: 99%

Dental calculus detection using the VistaCam

Shakibaie

Walsh

2016

Clinical & Exp Dental Res

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The VistaCam® intra‐oral camera system (Dürr Dental, Bietigheim‐Bissingen, Germany) is a fluorescence system using light emitting diodes that produce a 405‐nm violet light. This wavelength has potential application for detection of dental calculus based on red emissions from porphyrin molecules. This study assessed the digital scores obtained for both supragingival and subgingival calculus on 60 extracted teeth and compared these with lesions of dental caries. It has also examined the effect of saliva and blood on the fluorescence readings for dental calculus. VistaCam fluorescence scores for both supragingival (1.7–3.3) and subgingival calculus (1.3–2.4) were higher than those for sound root surfaces (0.9–1.1) and dental caries (0.9–2.2) (p < .05). The readings for calculus samples were not affected by the presence of saliva or blood. These results suggest that the use of violet light fluorescence could be a possible adjunct to clinical examination for deposits of dental calculus.

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Section: Discussionmentioning

confidence: 99%

Dental calculus detection using the VistaCam

Shakibaie

Walsh

2016

Clinical & Exp Dental Res

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“…It was suggested that the accuracy of the laser-based calculus detection can be impaired by gingiva. 11,12 However, this situation was improved by the two-photon fluorescence imaging technology based on our study. While the detection of subgingival calculus by the conventional one-photon confocal microscopy technique suffered from the fluorescence of healthy cementum and the shallow penetration depth, the two-photon mechanism limited the fluorescence excitation within the focal plane and the gingiva-covered calculus.…”

Section: Resultsmentioning

confidence: 85%

“…It was suggested that the accuracy of the laser-based calculus detection can be impaired by gingiva. 11,12 The feasibility of using a multiplephoton fluorescence technique on the detection of subgingival calculus is then an interesting topic. The major impact of nonlinear optics in microscopy began with the invention of twophoton microscopy by Denk et al in 1990 (Ref.…”

Section: Introductionmentioning

confidence: 99%

Characteristics of subgingival calculus detection by multiphoton fluorescence microscopy

Tung

Lee²,

Lai

et al. 2011

J. Biomed. Opt.

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Abstract. Subgingival calculus has been recognized as a major cause of periodontitis, which is one of the main chronic infectious diseases of oral cavities and a principal cause of tooth loss in humans. Bacteria deposited in subgingival calculus or plaque cause gingival inflammation, function deterioration, and then periodontitis. However, subgingival calculus within the periodontal pocket is a complicated and potentially delicate structure to be detected with current dental armamentaria, namely dental x-rays and dental probes. Consequently, complete removal of subgingival calculus remains a challenge to periodontal therapies. In this study, the detection of subgingival calculus employing a multiphoton autofluorescence imaging method was characterized in comparison with a one-photon confocal fluorescence imaging technique. Feasibility of such a system was studied based on fluorescence response of gingiva, healthy teeth, and calculus with and without gingiva covered. The multiphoton fluorescence technology perceived the tissue-covered subgingival calculus that cannot be observed by the onephoton confocal fluorescence method. C 2011 Society of Photo-Optical Instrumentation Engineers (SPIE).

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“…A combination of an automatically calculus detection system with a treatment laser is suitable, to have a minimalinvasive therapy. Previous studys with an Er:Yag-Laser with a 655nm diode detection laser showed, that the radiation induced a significant stronger fluorescence in subgingival calculus than in cementum (Folwaczny et al 2002, 2004, Krause et al, 2003.…”

Section: Introductionmentioning

confidence: 90%

Fluorescence-based calculus detection using a 405-nm excitation wavelength

Brede

Schelle

Krueger

et al. 2011

Lasers in Dentistry XVII

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The aim of this study was to assess the difference of fluorescence signals of cement and calculus using a 405 nm excitation wavelength. A total number of 20 freshly extracted teeth was used. The light source used for this study was a blue LED with a wavelength of 405nm. For each tooth the spectra of calculus and cementum were measured separately. Fluorescence light was collimated into an optical fibre and spectrally analyzed using an echelle spectrometer (aryelle 200, Lasertechnik Berlin, Germany) with an additionally bandpass (fgb 67, Edmund Industrial Optics, Karlsruhe, Germany). From these 40 measurements the median values were calculated over the whole spectrum, leading to two different median spectra, one for calculus and one for cementum. For further statistical analysis we defined 8 areas of interest (AOI) in wavelength regions, showing remarkable differences in signal strength. In 7 AOIs the intensity of the calculus spectrum differed statistically significant from the intensity of the cementum spectrum (p < 0.05). A spectral difference could be shown between calculus and cement between 600nm and 700nm. Thus, we can conclude that fluorescence of calculus shows a significant difference to the fluorescence of cement. A differentiation over the intensity is possible as well as over the spectrum. Using a wavelength of 405nm, it is possible to distinguish between calculus and cement. These results could be used for further devices to develop a method for feedback controlled calculus removal. Downloaded From: http://proceedings.spiedigitallibrary.org/ on 06/17/2016 Terms of Use: http://spiedigitallibrary.org/ss/TermsOfUse.aspx

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The Effectiveness of InGaAsP Diode Laser Radiation to Detect Subgingival Calculus as Compared to an Explorer

Abstract: The present findings indicate that the detection of subgingival calculus is significantly improved using 655 nm diode laser radiation compared to an explorer for molars but not for single-rooted teeth.

Cited by 26 publications

References 19 publications

Dental calculus detection using the VistaCam

Dental calculus detection using the VistaCam

Characteristics of subgingival calculus detection by multiphoton fluorescence microscopy

Fluorescence-based calculus detection using a 405-nm excitation wavelength

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