Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
. 2017 Dec;9(6):432-438.
doi: 10.4047/jap.2017.9.6.432. Epub 2017 Dec 14.

Detection of proximal caries using quantitative light-induced fluorescence-digital and laser fluorescence: a comparative study

Hyung-In Yoon  1 , Min-Jeong Yoo  2 , Eun-Jin Park  3
Affiliations

Detection of proximal caries using quantitative light-induced fluorescence-digital and laser fluorescence: a comparative study

Hyung-In Yoon et al. J Adv Prosthodont. 2017 Dec.

Abstract

Purpose: The purpose of this study was to evaluate the in vitro validity of quantitative light-induced fluorescence-digital (QLF-D) and laser fluorescence (DIAGNOdent) for assessing proximal caries in extracted premolars, using digital radiography as reference method.

Materials and methods: A total of 102 extracted premolars with similar lengths and shapes were used. A single operator conducted all the examinations using three different detection methods (bitewing radiography, QLF-D, and DIAGNOdent). The bitewing x-ray scale, QLF-D fluorescence loss (ΔF), and DIAGNOdent peak readings were compared and statistically analyzed.

Results: Each method showed an excellent reliability. The correlation coefficient between bitewing radiography and QLF-D, DIAGNOdent were -0.644 and 0.448, respectively, while the value between QLF-D and DIAGNOdent was -0.382. The kappa statistics for bitewing radiography and QLF-D had a higher diagnosis consensus than those for bitewing radiography and DIAGNOdent. The QLF-D was moderately to highly accurate (AUC = 0.753 - 0.908), while DIAGNOdent was moderately to less accurate (AUC = 0.622 - 0.784). All detection methods showed statistically significant correlation and high correlation between the bitewing radiography and QLF-D.

Conclusion: QLF-D was found to be a valid and reliable alternative diagnostic method to digital bitewing radiography for in vitro detection of proximal caries.

Keywords: Bitewing radiography; Laser fluorescence; Proximal caries detection; Quantitative light-induced fluorescence-digital.

PubMed Disclaimer

Figures

Fig. 1
Fig. 1. ROC (Receiver Operating Characteristics) curves for QLF-D and DIAGNOdent (Sound/Caries).
Fig. 2
Fig. 2. ROC curves for QLF-D and DIAGNOdent (Sound or Caries into Enamel/Caries into Dentin).
See this image and copyright information in PMC

References

    1. Matalon S, Feuerstein O, Kaffe I. Diagnosis of approximal caries: bite-wing radiology versus the Ultrasound Caries Detector. An in vitro study. Oral Surg Oral Med Oral Pathol Oral Radiol Endod. 2003;95:626–631. - PubMed
    1. Murray JJ, Majid ZA. The prevalence and progression of approximal caries in the deciduous dentition in British children. Br Dent J. 1978;145:161–164. - PubMed
    1. Arnold WH, Gaengler P, Kalkutschke L. Three-dimensional reconstruction of approximal subsurface caries lesions in deciduous molars. Clin Oral Investig. 1998;2:174–179. - PubMed
    1. Rayner JA, Southam JC. Pulp changes in deciduous teeth associated with deep carious dentine. J Dent. 1979;7:39–42. - PubMed
    1. Choi SC. About the effect of Bite-wing radiograph’s diagnosis. J Korean Dent Assoc. 1989;27:688–695.