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In Vitro Red Fluorescence as an Indicator of Caries Lesion Activity

 BR Kim  ;  SM Kang  ;  E de Josselin de Jong  ;  HK Kwon  ;  BI Kim 
 Operative Dentistry, Vol.44(4) : 405-413, 2019 
Journal Title
 Operative Dentistry 
Issue Date
This in vitro study examined the utility of comparing red fluorescence between active and inactive caries lesions and investigated whether changes in red fluorescence and fluorescence loss are influenced by lesion activity following remineralization. Sixty-two noncavitated smooth surface caries lesions on extracted human teeth were classified into active or inactive lesions using the Nyvad system prior to a 12-day pH-cycling procedure. Quantitative light-induced fluorescence-digital images were used to measure fluorescence parameters before and after pH cycling. At baseline, the intensity (ΔR) and area (AΔR) of red fluorescence were 1.5- and 2.2-fold higher in active lesions than in inactive lesions (p<0.05). The ratio of AΔR to lesion area was associated with classification of active lesions (odds ratio = 1.031; 95% confidence interval = 1.005-1.058). After pH cycling, the active lesions showed about 2- and 8-fold greater reductions in the median values of AΔR and fluorescence loss related to lesion volume (ΔQ) compared with inactive lesions (p<0.05). In conclusion, red fluorescence differs depending on lesion activity, and the red fluorescence area and lesion volume change following remineralization. The results suggest that measuring red fluorescence may be a useful way of objectively evaluating lesion activity of smooth surface lesions.
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2. College of Dentistry (치과대학) > Dept. of Preventive Dentistry and Public Oral Health (예방치과학교실) > 1. Journal Papers
Yonsei Authors
Kang, Si-Mook(강시묵) ORCID logo https://orcid.org/0000-0003-2341-3636
Kwon, Ho Keun(권호근)
Kim, Baek Il(김백일) ORCID logo https://orcid.org/0000-0001-8234-2327
Kim, Bo Ra(김보라)
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