Imaging Science in Dentistry

Korean Academy of Oral and Maxillofacial Radiology (대한영상치의학회)
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Evaluation of alveolar bone grafting in unilateral cleft lip and palate patients using a computer-aided diagnosis system

  • Sutthiprapaporn, Pipop (Department of Oral Diagnosis, Khon Kaen University) ;
  • Tanimoto, Keiji (Department of Oral and Maxillofacial Radiology, Graduate School of Biomedical Sciences, Hiroshima University) ;
  • Nakamoto, Takashi (Department of Oral and Maxillofacial Radiology, Graduate School of Biomedical Sciences, Hiroshima University) ;
  • Kongsomboon, Supaporn (Department of Oral and Maxillofacial Surgery, Khon Kaen University) ;
  • Limmonthol, Saowaluck (Department of Oral and Maxillofacial Surgery, Khon Kaen University) ;
  • Pisek, Poonsak (Department of Orthodontics, Khon Kaen University) ;
  • Keinprasit, Chutimaporn (Department of Orthodontics, Khon Kaen University)
  • Received : 2012.05.21
  • Accepted : 2012.08.12
  • Published : 2012.12.31
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Abstract

Purpose: This study aimed to evaluate the trabecular bone changes after alveolar bone grafting in unilateral cleft lip and palate (UCLP) patients using a computer-aided diagnosis (CAD) system. Materials and Methods: The occlusal radiographs taken from 50 UCLP patients were surveyed retrospectively. The images were categorized as: 50 images in group 0 (before bone grafting), 33 images in group 1 (one month after bone grafting), 24 images in group 2 (2-4 months after bone grafting), 15 images in group 3 (5-7 months after bone grafting), and 21 images in group 4 (8 or more months after bone grafting). Each image was grouped as either "non-cleft side" or "cleft side". The CAD system was used five times for each side to calculate the pixel area based on the mathematical morphology. Significant differences were found using a Wilcoxon signed ranks test or paired samples t test. Results: The pixel area showed a significant difference between the "non-cleft side" and "cleft side" in group 0 ($404.27{\pm}103.72/117.73{\pm}92.25$; p=0.00), group 1 ($434.29{\pm}86.70/388.31{\pm}109.51$; p=0.01), and group 4 ($430.98{\pm}98.11/366.71{\pm}154.59$; p=0.02). No significant differences were found in group 2 ($423.57{\pm}98.12/383.47{\pm}135.88$; p=0.06) or group 3 ($433.02{\pm}116.07/384.16{\pm}146.55$; p=0.19). Conclusion: Based on the design of this study, alveolar bone grafting was similar to normal bone within 2-7 months postoperatively.

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References

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