The Journal of Contemporary Dental Practice

Register      Login

SEARCH WITHIN CONTENT

FIND ARTICLE

Volume / Issue

Online First

Archive
Related articles

VOLUME 11 , ISSUE 6 ( December, 2010 ) > List of Articles

RESEARCH ARTICLE

A Comparison of the Accuracy of Digital and Conventional Radiography in the Diagnosis of Recurrent Caries

Najmeh Anbiaee, Anousheh Rashed Mohassel, Mahrokh Imanimoghaddam, Seyed Mostafa Moazzami

Citation Information : Anbiaee N, Mohassel AR, Imanimoghaddam M, Moazzami SM. A Comparison of the Accuracy of Digital and Conventional Radiography in the Diagnosis of Recurrent Caries. J Contemp Dent Pract 2010; 11 (6):25-32.

DOI: 10.5005/jcdp-11-6-25

License: CC BY-NC 3.0

Published Online: 01-12-2010

Copyright Statement:  Copyright © 2010; Jaypee Brothers Medical Publishers (P) Ltd.


Abstract

Aim

The purpose of this laboratory research was to compare the accuracy of digital and conventional bitewing radiographs in the diagnosis of recurrent caries under class II amalgam restorations.

Methods and Materials

This study involved 82 posterior intact teeth in which class II amalgam boxes were prepared. Carious lesions were simulated in half of the proximal boxes in the intersection between the facial or lingual wall and the gingival floor or midway between the facial and lingual walls. The other half of each tooth specimen served as a control. The prepared boxes were then restored with a Tytin FC (Kerr, USA) amalgam. The teeth were radiographed in the bucco-lingual direction to obtain images comparable to bitewing. Digital radiographs made with an intraoral CCD sensor and conventional radiography with dental E film were used. Three expert observers evaluated both types of images for the diagnosis of recurrent caries.

Results

Sensitivity and specificity values for direct digital radiography were 73 and 95 percent at the buccal and lingual line angles, respectively, and 29 and 90 percent at the mid-gingival floor, respectively. These corresponding values for conventional radiography were respectively 63 and 93 percent at the buccal line angle, 61 and 93 percent at the lingual line angle, and 44 and 95 percent at the mid-gingival floor. The total sensitivity and specificity values were 58 and 93 percent for digital radiography and 56 and 93 percent for conventional radiography. The overall accuracy was 76 percent for digital and 75 percent for conventional radiography. No significant difference in specificity or sensitivity was found between the digital and conventional radiography (p=0.104). Separately, no significant difference was seen between the buccal line angle and the mid-gingival floor, but a significant difference was seen between the two methods in the lingual line angle (p=0.004).

Conclusion

The digital and conventional bitewing radiographs had similar diagnostic accuracy for the diagnosis of recurrent caries. Lesions located at the buccal or lingual line angle were more easily detected than those at the mid-gingival region.

Clinical Significance

Although there was no significant difference between digital and conventional radiography in the diagnosis of recurrent caries, digital radiography requires less ionizing radiation, making this method of imaging suggested for routine dental practice.

Citation

Anbiaee N, Rashed A, Imanimoghaddam M, Moazzami SM. A Comparison of the Accuracy of Digital and Conventional Radiography in the Diagnosis of Recurrent Caries. J Contemp Dent Pract [Internet]. 2010 December; 11(6):025-032. Available from: http://www.thejcdp.com/journal/ view/volume11-issue6-anbiaee


PDF Share
  1. The effects of restorative material and location on the detection of simulated recurrent caries. A comparison of dental film, direct digital radiography and tuned aperture computed tomography. Dentomaxillofac Radiol. 1998; 27(2):80-4.
  2. Cross-sectional radiographic survey of amalgam and resinbased composite posterior restorations. Quintessence Int. 2007; 38(6):511-4.
  3. Diagnosis of secondary caries: a laboratory study. Br Dent J. 1994;176(4):135-8, 139.
  4. Secondary caries: a literature review with case reports. Quintessence Int. 2000; 31(3):165-79.
  5. Need for change in standards of caries diagnosis—perspective based on the structure and behavior of the caries lesion. J Dent Educ. 1993; 57(6):439-43.
  6. Prevalence of clinically undetected and untreated molar occlusal dentine caries in adolescents on the Isle of Wight. Caries Res. 1992; 26(5): 397-401.
  7. Clinically undetected occlusal dentine caries: a radiographic comparison. Caries Res. 1992; 26(4):305-9.
  8. Clinically undetected dental caries assessed by bitewing screening in children with little caries experience. Dentomaxillofac Radiol. 1994; 23(1):19-23.
  9. Validity of radiographs for diagnosis of secondary caries in teeth with class II amalgam restorations in vitro. Caries Res. 1997; 31(1):24-9.
  10. Validity of bite-wings for diagnosis of secondary caries in teeth with occlusal amalgam restorations in vitro. Caries Res. 1993; 27(4):312-6.
  11. Matters to consider when implementing direct digital radiography in the dental office. Int J Comput Dent. 1999; 2(4):269-90.
  12. Influence of computerized information technologies on image quality in dental radiographs. Tandlaegebladet. 1991; 95(12):527-59.
  13. Absence of carious lesions at margins of glass-ionomer and amalgam restorations: a meta-analysis. Eur J Paediatr Dent. 2009; 10(1):41-6.
  14. Oral radiology: principles and interpretation. 6th ed. St. Louis: Mosby; 2008. p. 78-84, 98.
  15. Radiopacity of restorations and detection of secondary caries. Dent Mater. 1991; 7(2):114-7.
  16. Developments in radiographic caries diagnosis. J Dent. 1993; 21(3):131-40.
  17. Effects of digital grey-scale modification on the diagnosis of small approximal carious lesions. J Dent. 1992; 20(1):44-9.
  18. Sturdevant's art and science of operative dentistry. 5th ed. St. Louis: Mosby; 2006. p. 107.
  19. Secondary caries in crowned teeth: correlation of clinical and radiographic findings. J Prosthet Dent. 2002; 88(3):314-9.
  20. Reproducibility in the assessment of caries lesion behaviour: a comparison between conventional film and subtraction radiography. Caries Res. 2000; 34(3):214-8.
PDF Share
PDF Share

© Jaypee Brothers Medical Publishers (P) LTD.