title: Relationship between colors of carious dentin and laser fluorescence evaluations in caries diagnosis.
abstract: This in vitro study investigated the relationship between assessments of dentin caries using a laser fluorescence device (DIAGNOdent) and a caries detector dye during caries removal. The dentin of eight extracted carious molars was removed at 300-microm interval points from the dentin surface toward the pulp chamber. Before and after each removal, images of the carious surfaces were taken in association with color-matching stickers (for color correction) and the surfaces were evaluated by DIAGNOdent based on fluorescence emission from the tooth surface. For the L* values (CIE 1976 L*a*b* color system), there was a strong negative correlation between DIAGNOdent results and the corrected L* values of the carious surfaces (Pearson's correlation coefficient: -0.853); additionally, there was a significant correlation between them (p<0.05). However, there were no significant correlations between the DIAGNOdent results and the corrected a* and b* values of the carious surfaces (Pearson's correlation coefficients: 0.108 and 0.018 respectively). In conclusion, DIAGNOdent was shown to be applicable for caries diagnosis during caries removal.
authors.affiliation: Department of Restorative Dentistry and Endodontology, Osaka University Graduate School of Dentistry, Japan. y-iwami@dent.osaka-u.ac.jp
authors.forename: Yukiteru
authors.initials: Y
authors.lastname: Iwami
authors.forename: Ayako
authors.initials: A
authors.lastname: Shimizu
authors.forename: Mikako
authors.initials: M
authors.lastname: Hayashi
authors.forename: Fumio
authors.initials: F
authors.lastname: Takeshige
authors.forename: Shigeyuki
authors.initials: S
authors.lastname: Ebisu
mesh_terms: D004396:Coloring Agents; D003731:Dental Caries / Q000175:diagnosis*; D003732:Dental Caries Activity Tests / Q000295:instrumentation*; D003804:Dentin / Q000737:chemistry / Q000473:pathology; D005453:Fluorescence; D006801:Humans; D007834:Lasers; D018709:Statistics, Nonparametric; D014075:Tooth Discoloration
chemical_list: D004396:Coloring Agents