口腔病理科 On-Line KMU Student Bulletin
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原文題目(出處)： Comparison of digital panoramic radiography versus cone beam computerized tomography for measuring alveolar bone (BioMed Central)
原文作者姓名： Zunan Tang, Xianchu Liu, Kejia Chen*
通訊作者學校： Central South University, China 報告者姓名(組別)： 江依芸(K)
報告日期： 2017/06/08
內文：
Background
The local hospitals usually don’t have access to CBCT due to the cost
The doctors in local hospitals have to make reasonable dental planting using orthopantomography (OPG)
Determine the magnification rate of OPG to obtain correctdiagnosis Methods 86 patients were scanned by CBCT and OPG
measure
1. The vertical distance between the alveolar ridge crest of the maxillary first molar and the sinus bottom of the upper jaw
2. The distance between the alveolar ridge crest of the mandibular first molars and the top of nerviduct in the mandibular alveolar
3. The distance between the alveolar ridge crest of the maxillary central incisors and the bottoms of the nasal cavities
The distances betweenCBCT and OPG were compared using paired t-test Results
The mean vertical magnification rates were 5.55% and 4.84% for the central incisors in the upper right and left jaws respectively
The mean horizontal magnification rates were 6.53% and 7.47% for the central incisors
口腔病理科 On-Line KMU Student Bulletin
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the mean vertical magnification rates were 11.38% and 12.95% vertically and 8.55% and 9.43% horizontally for the first molars
Conclusion
The magnification rates of OPG at these teeth are different. The distances measured by OPG were highly correlated with that measured by CBCT.
題號 題目
1 According to this article,which distance is not measured when comparing CBCT and OPG ?
(A) The distance between the alveolar ridge crest of the maxillary first molar and the sinus bottom of the upper jaw (B) The distance between the alveolar ridge crest of the
mandibular first molars and the top of nerviduct in the mandibular alveolar
(C) The distance between the alveolar ridge crest of the maxillary central incisors and the bottoms of the nasal cavities
(D) The faciolingual thickness of bone plate 答案
(D)
出處：OPG as two-dimensional imaging is not able to provide information regarding the thickness
題號 題目
2 Which kind of patients are not suggested to implant based on OPG Alone?
(A) Patients with caries
(B) Patients with periodontal disease
(C) Patients with temporalmandibular disease (D) Patients with psychological disease 答案
(B)
出處：To lower the risks,patients with moderate or severe periodontal diseases are not suggested to implant based on OPG alone.
