Imaging Science in Dentistry

Korean Academy of Oral and Maxillofacial Radiology (대한영상치의학회)
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Evaluation of linear measurements of implant sites based on head orientation during acquisition: An ex vivo study using cone-beam computed tomography

  • Sabban, Hanadi (Section of Oral and Maxillofacial Radiology, Department of Oral Diagnostic Sciences, University of Connecticut School of Dental Medicine) ;
  • Mahdian, Mina (Section of Oral and Maxillofacial Radiology, Department of Oral Diagnostic Sciences, University of Connecticut School of Dental Medicine) ;
  • Dhingra, Ajay (Section of Prosthodontics, Department of Reconstructive Sciences, University of Connecticut School of Dental Medicine, Farmington) ;
  • Lurie, Alan G. (Section of Oral and Maxillofacial Radiology, Department of Oral Diagnostic Sciences, University of Connecticut School of Dental Medicine) ;
  • Tadinada, Aditya (Section of Oral and Maxillofacial Radiology, Department of Oral Diagnostic Sciences, University of Connecticut School of Dental Medicine)
  • Received : 2014.10.28
  • Accepted : 2015.02.12
  • Published : 2015.06.30
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Abstract

Purpose: This study evaluated the effect of various head orientations during cone-beam computed tomography (CBCT) image acquisition on linear measurements of potential implant sites. Materials and Methods: Six dry human skulls with a total of 28 implant sites were evaluated for seven different head orientations. The scans were acquired using a Hitachi CB-MercuRay CBCT machine. The scanned volumes were reconstructed. Horizontal and vertical measurements were made and were compared to measurements made after simulating the head position to corrected head angulations. Data was analyzed using a two-way ANOVA test. Results: Statistical analysis revealed a significant interaction between the mean errors in vertical measurements with a marked difference observed at the extension head position (P<0.05). Statistical analysis failed to yield any significant interaction between the mean errors in horizontal measurements at various head positions. Conclusion: Head orientation could significantly affect the vertical measurements in CBCT scans. The main head position influencing the measurements is extension.

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References

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