PMID- 23903652 OWN - NLM STAT- MEDLINE DCOM- 20150409 LR - 20190918 IS - 1881-1361 (Electronic) IS - 0287-4547 (Linking) VI - 32 IP - 4 DP - 2013 TI - Validity of a portable microhardness testing system (Cariotester) for diagnosis of progression in active caries lesions. PG - 667-72 AB - This study aimed to evaluate the validity of a portable microhardness testing system (Cariotester) for diagnosis of progression in active caries lesions by comparing data from this device and a laser fluorescence device (DIAGNOdent). Carious dentin in 12 specimens (stained clearly with a caries detector dye) was incrementally removed with a round bur at 150 mum depth intervals from the dentin surface in the direction of the pulp chamber. After each increment (total 138 sites), the Knoop hardness (HK) (evaluated with Cariotester) and DIAGNOdent (D) values were measured. HK values increased as D values decreased (regression formula: HK=0.419+238.342/D (p<0.001); coefficient of determination (R(2)): 0.602). Although DIAGNOdent quantitatively evaluates the degree of caries progression and bacterial infection status in caries lesions, our results demonstrate the validity and convenience of alternatively using microhardness measurements during caries removal to evaluate disease progression. FAU - Iwami, Yukiteru AU - Iwami Y AD - Department of Restorative Dentistry and Endodontology, Osaka University Graduate School of Dentistry, 1-8 Yamadaoka, Suita, Osaka 565-0871, Japan. y-iwami@dent.osaka-u.ac.jp FAU - Yamamoto, Hiroko AU - Yamamoto H FAU - Hayashi, Mikako AU - Hayashi M LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - Japan TA - Dent Mater J JT - Dental materials journal JID - 8309299 RN - 0 (Coloring Agents) MH - Algorithms MH - Color MH - Coloring Agents MH - Dental Caries/*diagnosis/pathology MH - Dental Cavity Preparation/instrumentation MH - Dental Stress Analysis/instrumentation MH - Dentin/pathology MH - Disease Progression MH - Fluorescence MH - Hardness MH - Humans MH - Lasers, Semiconductor MH - Microcomputers MH - Microscopy/instrumentation MH - Reproducibility of Results EDAT- 2013/08/02 06:00 MHDA- 2015/04/10 06:00 CRDT- 2013/08/02 06:00 PHST- 2013/08/02 06:00 [entrez] PHST- 2013/08/02 06:00 [pubmed] PHST- 2015/04/10 06:00 [medline] AID - DN/JST.JSTAGE/dmj/2012-328 [pii] AID - 10.4012/dmj.2012-328 [doi] PST - ppublish SO - Dent Mater J. 2013;32(4):667-72. doi: 10.4012/dmj.2012-328.