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J Dent. 2012 Jan;40(1):35-40. doi: 10.1016/j.jdent.2011.09.002. Epub 2011 Sep 12.

Validity of MicroCT for in vitro detection of proximal carious lesions in primary molars.

Author information

1
Department of Preventive and Community Dentistry, Universidade do Estado do Rio de Janeiro, Brazil. verasoviero@gmail.com

Abstract

OBJECTIVE:

This study aimed to validate the MicroCT for detection of proximal carious lesions in primary molars, using histology as the gold standard.

METHODS:

Forty-eight proximal surfaces of primary molars were examined. Two calibrated examiners conducted the examinations independently. Proximal surfaces were visually scored, using ICDAS. Bitewing radiographs, Micro-CT and histological analyses used caries scores: 0=sound; 1=outer enamel; 2=inner enamel; 3=not spread dentine; 4=outer dentine; 5=inner dentine. Axial and sagital images were used for Micro-CT analysis, whilst for histology, tooth sections (400μm) were analyzed stereomicroscopically (×15).

RESULTS:

Inter-examiner agreement ranged from 0.87 to 0.93 kappa coefficient (k). Histological analysis revealed a frequency of sound tooth surfaces (18.8%) enamel carious lesions (E1) (48%) and dentine carious lesions (D1) (33.3%). MicroCT showed high correlation with histology (r(s)0.88). At both diagnostic thresholds (E1 and D1), sensitivity and accuracy were higher for MicroCT. Inter-device agreement between MicroCT and histology was k=0.81. No difference was found between MicroCT and histology as gold standards for detecting carious lesions using ICDAS.

CONCLUSION:

MicroCT can be used as a gold standard for detecting carious lesions in proximal surfaces in primary molars.

PMID:
21930181
DOI:
10.1016/j.jdent.2011.09.002
[Indexed for MEDLINE]

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