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Evaluation of peri-implant bone defects on cone-beam computed tomography and the diagnostic accuracy of detecting these defects on panoramic images

  • Takayuki Oshima (Department of Oral and Maxillofacial Radiology, The Nippon Dental University School of Life Dentistry) ;
  • Rieko Asaumi (Department of Oral and Maxillofacial Radiology, The Nippon Dental University School of Life Dentistry) ;
  • Shin Ogura (Division of Oral Implantology, The Nippon Dental University Hospital) ;
  • Taisuke Kawai (Department of Oral and Maxillofacial Radiology, The Nippon Dental University School of Life Dentistry)
  • 투고 : 2023.11.30
  • 심사 : 2024.02.28
  • 발행 : 2024.06.30

초록

Purpose: This study was conducted to identify the typical sites and patterns of peri-implant bone defects on cone-beam computed tomography (CBCT) images, as well as to evaluate the detectability of the identified bone defects on panoramic images. Materials and Methods: The study population included 114 patients with a total of 367 implant fixtures. CBCT images were used to assess the presence or absence of bone defects around each implant fixture at the mesial, distal, buccal, and lingual sites. Based on the number of defect sites, the presentations of the peri-implant bone defects were categorized into 3 patterns: 1 site, 2 or 3 sites, and circumferential bone defects. Two observers independently evaluated the presence or absence of bone defects on panoramic images. The bone defect detection rate on these images was evaluated using receiver operating characteristic analysis. Results: Of the 367 implants studied, 167 (45.5%) had at least 1 site with a confirmed bone defect. The most common type of defect was circumferential, affecting 107 of the 167 implants(64.1%). Implants were most frequently placed in the mandibular molar region. The prevalence of bone defects was greatest in the maxillary premolar and mandibular molar regions. The highest kappa value was associated with the mandibular premolar region. Conclusion: The typical bone defect pattern observed was a circumferential defect surrounding the implant. The detection rate was generally higher in the molar region than in the anterior region. However, the capacity to detect partial bone defects using panoramic imaging was determined to be poor.

키워드

과제정보

The authors wish to express their gratitude to Dr. Hiroshi Iwata and Dr. Kazuto Koresawa of the Nippon Dental University Hospital, as well as Dr. Madoka Nagaura of the Nippon Dental University School of Life Dentistry at Tokyo, for their invaluable assistance with the image acquisition and observation. The authors would also like to thank Dr. Keiichi Nishikawa of Tokyo Dental College for his considerable aid with the preparation of this study.

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