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Detection and Analysis of Enamel Cracks by Quantitative Light-induced Fluorescence Technology

 Mi-Kyoung Jun  ;  Hye-Min Ku  ;  Euiseong Kim  ;  Hee-Eun Kim  ;  Ho-Keun Kwon  ;  Baek-Il Kim 
 JOURNAL OF ENDODONTICS, Vol.42(3) : 500-504, 2016 
Journal Title
Issue Date
Cracked Tooth Syndrome/diagnosis* ; Cracked Tooth Syndrome/diagnostic imaging ; Cracked Tooth Syndrome/pathology ; Dental Caries/diagnosis ; Dental Caries/pathology ; Dental Enamel/chemistry* ; Dental Enamel/pathology* ; Fluorescence ; Humans ; Light ; Tooth/chemistry* ; Tooth Fractures/diagnosis
Diagnosis ; enamel crack ; quantitative light-induced fluorescence
INTRODUCTION: The ability to accurately detect tooth cracks and quantify their depth would allow the prediction of crack progression and treatment success. The aim of this in vitro study was to determine the capabilities of quantitative light-induced fluorescence (QLF) technology in the detection of enamel cracks.
METHODS: Ninety-six extracted human teeth were selected for examining naturally existing or suspected cracked teeth surfaces using a photocuring unit. QLF performed with a digital camera (QLF-D) images were used to assess the ability to detect enamel cracks based on the maximum fluorescence loss value (ΔFmax, %), which was then analyzed using the QLF-D software. A histologic evaluation was then performed in which the samples were sectioned and observed with the aid of a polarized light microscope. The relationship between ΔFmax and the histology findings was assessed based on the Spearman rank correlation. The sensitivity and specificity were calculated to evaluate the validity of using QLF-D to analyze enamel inner-half cracks and cracks extending to the dentin-enamel junction.
RESULTS: There was a strong correlation between the results of histologic evaluations of enamel cracks and the ΔFmax value, with a correlation coefficient of 0.84. The diagnostic accuracy of QLF-D had a sensitivity of 0.87 and a specificity of 0.98 for enamel inner-half cracks and a sensitivity of 0.90 and a specificity of 1.0 for cracks extending to the dentin-enamel junction.
CONCLUSIONS: These results indicate that QLF technology would be a useful clinical tool for diagnosing enamel cracks, especially given that this is a nondestructive method.
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2. College of Dentistry (치과대학) > Dept. of Conservative Dentistry (보존과학교실) > 1. Journal Papers
2. College of Dentistry (치과대학) > Dept. of Preventive Dentistry and Public Oral Health (예방치과학교실) > 1. Journal Papers
Yonsei Authors
Kwon, Ho Keun(권호근)
Kim, Baek Il(김백일) ORCID logo https://orcid.org/0000-0001-8234-2327
Kim, Eui Seong(김의성) ORCID logo https://orcid.org/0000-0003-2126-4761
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