Journal article

Publication year: 2020

Journal: Photodiagnosis and Photodynamic Therapy

Volume number: 32

ISSN: 1572-1000

eISSN: 1873-1597

DOI Link: https://doi.org/10.1016/j.pdpdt.2020.102063

Publisher: Elsevier

Abstract: 

Background: Quantitative Light-induced Fluorescence-Digital (QLF-D) detects red fluorescence of plaque, but is almost solely used on labial anterior tooth surfaces. As distribution and formation of plaque varies distinctly within the dentition, our aim was to investigate, how red fluorescing plaque is related to disclosed plaque depending on tooth type and surface. This was done with habitual plaque and after de-novo plaque formation.

Methods: Thirty subjects were enrolled. QLF-Dimages of undisclosed plaque and conventional images of disclosed plaque were planimetrically analysed. Values were expressed as percentage of red fluorescing plaque (P%QLF-D) and of disclosed plaque (P%D) of the total tooth surface. Images were taken at baseline, after de-novo plaque formation (48 (T2) and 72 (T3) h without oral hygiene after professional tooth cleaning), and after 4-6 weeks of habitual oral hygiene (T4). Results: At the tooth level, P%QLF-D was significantly lower than P%D on vestibular surfaces but reached similar levels on oral surfaces. De-novo plaque formation caused a significant increase in P%D on vestibular surfaces; this was not reflected by QLF-D. At the subject level, on vestibular surfaces and at baseline, some subjects exhibited minor but others gross differences between P%QLF-D and P%D. This was not the case at T3, but the same pattern appeared again at T4. On oral surfaces, the order of differences was more evenly scattered with no clear impact of the observation time point.

Conclusion: Red fluorescence of dental plaque relates very differently to disclosed plaque depending on sites and maturation stages and has a significant inter-individual component.

Harvard Citation style: Ganss, C., Glanz, A., Glanz, T., Schlueter, N. and Ruf, S. (2020) Red fluorescence of plaque in the dentition-a comparison of Quantitative Light-induced Fluorescence-Digital (QLF-D) images and conventional images of disclosed plaque, Photodiagnosis and Photodynamic Therapy, 32, Article 102063. https://doi.org/10.1016/j.pdpdt.2020.102063

APA Citation style: Ganss, C., Glanz, A., Glanz, T., Schlueter, N., & Ruf, S. (2020). Red fluorescence of plaque in the dentition-a comparison of Quantitative Light-induced Fluorescence-Digital (QLF-D) images and conventional images of disclosed plaque. Photodiagnosis and Photodynamic Therapy. 32, Article 102063. https://doi.org/10.1016/j.pdpdt.2020.102063