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Quantitative light-induced fluorescence enables effective detection of orthodontic adhesive residues in diverse environments

Authors
 Chengzan Wu  ;  Utkarsh Mangal  ;  Junho Kim  ;  Kee-Joon Lee  ;  Jung-Yul Cha  ;  Jae-Sung Kwon  ;  Sung-Hwan Choi 
Citation
 PHOTODIAGNOSIS AND PHOTODYNAMIC THERAPY, Vol.44 : 103743, 2023-12 
Journal Title
PHOTODIAGNOSIS AND PHOTODYNAMIC THERAPY
ISSN
 1572-1000 
Issue Date
2023-12
Keywords
Orthodontic adhesive ; Qraycam ; Quantitative light-induced fluorescence (QLF) ; Residual adhesive ; White spot lesion
Abstract
Background: Adhesive remnants post-orthodontic treatment might have deleterious effects on oral health, including enamel demineralization, plaque accumulation, and elevated risk of caries development. The aim of this study was to identify and characterize adhesive residues in an ex vivo environment rich in salivary microbiota using quantitative light-induced fluorescence (QLF) technology.

Methods: Disc-shaped adhesive samples with thickness ranging from 800 to 100 µm were prepared using GC Ortho, GOTO, T Orthobond, and Transbond XT and subsequently evaluated utilizing a QLF system. Bovine teeth containing GC Ortho and GOTO adhesives and isolated human premolar teeth bonded with brackets were subjected to a 10-day incubation in an artificial saliva environment. Daily imaging was conducted using QLF during incubation. Data with ΔR > 30% and simple hygiene score (SHS) were obtained with a software for further analysis.

Results: Fluorescence intensity exhibited significant differences among the four orthodontic adhesives (p < 0.05). Results of incubation in artificial saliva revealed that red fluorescence surrounding the adhesive on the tooth surface was distinctly observable from day five onwards, with ΔR > 30% and SHS levels higher than those of the control group without adhesive (p < 0.05). Observation of fluorescence images of isolated human premolar teeth with bonded brackets indicated that red fluorescence was primarily present around the brackets.

Conclusions: Application of QLF is efficacious in identifying and demarcating adhesive residues within an environment rich in salivary microbiota.
Full Text
https://www.sciencedirect.com/science/article/pii/S1572100023004702
DOI
10.1016/j.pdpdt.2023.103743
Appears in Collections:
2. College of Dentistry (치과대학) > Dept. of Dental Biomaterials and Bioengineering (치과생체재료공학교실) > 1. Journal Papers
2. College of Dentistry (치과대학) > Dept. of Orthodontics (교정과학교실) > 1. Journal Papers
Yonsei Authors
Kwon, Jae-Sung(권재성) ORCID logo https://orcid.org/0000-0001-9803-7730
Mangal, Utkarsh(만갈웃커시)
Lee, Kee Joon(이기준) ORCID logo https://orcid.org/0000-0002-0782-3128
Cha, Jung Yul(차정열)
Choi, Sung Hwan(최성환) ORCID logo https://orcid.org/0000-0002-1150-0268
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/196359
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