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
. 2011 Dec;41(4):143-50.
doi: 10.5624/isd.2011.41.4.143. Epub 2011 Dec 19.

Diagnostic performance of cone-beam computed tomography on detection of mechanically-created artificial secondary caries

Arnon Charuakkra  1 , Sangsom Prapayasatok, Apirum Janhom, Surawut Pongsiriwet, Karune Verochana, Phattaranant Mahasantipiya
Affiliations

Diagnostic performance of cone-beam computed tomography on detection of mechanically-created artificial secondary caries

Arnon Charuakkra et al. Imaging Sci Dent. 2011 Dec.

Abstract

Purpose: The aim of this study was to compare the diagnostic accuracy of cone-beam computed tomography (CBCT) images and bitewing images in detection of secondary caries.

Materials and methods: One hundred and twenty proximal slots of Class II cavities were randomly prepared on human premolar and molar teeth, and restored with amalgam (n=60) and composite resin (n=60). Then, artificial secondary caries lesions were randomly created using round steel No. 4 bur. The teeth were radiographed with a conventional bitewing technique and two CBCT systems; Pax-500ECT and Promax 3D. All images were evaluated by five observers. The area under the receiver operating characteristic (ROC) curve (A(z)) was used to evaluate the diagnostic accuracy. Significant difference was tested using the Friedman test (p value<0.05).

Results: The mean A(z) values for bitewing, Pax-500ECT, and Promax 3D imaging systems were 0.882, 0.995, and 0.978, respectively. Significant differences were found between the two CBCT systems and film (p=0.007). For CBCT systems, the axial plane showed the greatest A(z) value.

Conclusion: Based on the design of this study, CBCT images were better than bitewing radiographs in detection of secondary caries.

Keywords: Cone Beam CT; Dental Caries; Diagnosis; Radiography, Bitewing.

PubMed Disclaimer

Figures

Fig. 1
Fig. 1
The illustration shows artificial caries prepared at the gingival floor and sealed with pink wax.
Fig. 2
Fig. 2
Examples of CBCT images demonstrates either secondary caries present or absent. A. Axial plane. B. Coronal plane. C. Sagittal plane.
Fig. 3
Fig. 3
Examples of bitewing images demonstrate either secondary caries present or absent
Fig. 4
Fig. 4
ROC curves represent pooled radiographic scores for five observers diagnosing secondary caries in connection with imaging modalities.
Fig. 5
Fig. 5
Examples of CBCT images in sagittal plane in which misinterpretation of secondary caries occurred. Thick arrows point at the surfaces that gave false positive results.
Fig. 6
Fig. 6
The CBCT image in the sagittal plane shows the artifacts (arrow) from the adjacent amalgam restoration that could be misinterpreted as secondary or remnant caries.
Fig. 7
Fig. 7
The Promax 3D system CBCT image (A) demonstrates a greater amount of artifacts than that of the Pax-500ECT system (B).
See this image and copyright information in PMC

Similar articles

See all similar articles

Cited by

See all "Cited by" articles

References

    1. Scarfe WC, Farman AG. Cone-beam computed tomography. In: White SC, Pharoah MJ, editors. Oral radiology: principle and interpretation. 6th ed. St. Louis: Mosby; 2009. pp. 225–242.
    1. Akdeniz B, Gröndahl H, Magnusson B. Accuracy of proximal caries depth measurements: comparison between limited cone beam computed tomography, storage phosphor and film radiography. Caries Res. 2006;40:202–207. - PubMed
    1. Tsuchida R, Araki K, Okano T. Evaluation of a limited cone-beam volumetric imaging system: comparison with film radiography in detecting incipient proximal caries. Oral Surg Oral Med Oral Pathol Oral Radiol Endod. 2007;104:412–416. - PubMed
    1. Haiter-Neto F, Wenzel A, Gotfredsen E. Diagnostic accuracy of cone beam computed tomography scans compared with intraoral image modalities for detection of caries lesions. Dentomaxillofac Radiol. 2008;37:18–22. - PubMed
    1. Young SM, Lee JT, Hodges RJ, Chang TL, Elashoff DA, White SC. A comparative study of high-resolution cone beam computed tomography and charge-coupled device sensors for detecting caries. Dentomaxillofac Radiol. 2009;38:445–451. - PubMed