Imaging Science in Dentistry

Korean Academy of Oral and Maxillofacial Radiology (대한영상치의학회)
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Effect of changing the kilovoltage peak on radiographic caries assessment in digital and conventional radiography

  • Zayet, Mohamed Khalifa (Oral Radiology Department, Faculty of Oral and Dental Medicine, Cairo University) ;
  • Helaly, Yara Rabee (Oral Radiology Department, Faculty of Oral and Dental Medicine, Cairo University) ;
  • Eiid, Salma Belal (Oral Radiology Department, Faculty of Oral and Dental Medicine, Cairo University)
  • Received : 2014.01.14
  • Accepted : 2014.04.15
  • Published : 2014.09.30
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Abstract

Purpose: This study aimed to investigate the effect of changing the kilovoltage peak (kVp) on the radiographic assessment of dental caries. Materials and Methods: Seventy-five extracted posterior teeth with proximal caries or apparently sound proximal surfaces were radiographed with conventional E-speed films and a photostimulable phosphor system using 60 kVp and 70 kVp for the caries assessment. The images were evaluated by three oral radiologists and compared with the results of the stereomicroscope analysis. Results: No statistically significant difference was found between 60 kVp and 70 kVp for the caries detection, determination of caries extension into dentin, and caries severity in either the conventional or the digital images. Good to very good inter-observer and intra-observer agreements were found for both kilovoltage values on the conventional and digital images. Conclusion: Changing the kilovoltage between 60 kVp and 70 kVp had no obvious effect on the detection of proximal caries or determination of its extension or severity.

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References

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