J Korean Dent Sci.  2017 Dec;10(2):53-59. 10.5856/JKDS.2017.10.2.53.

Comparison of Vertical Magnification Ratio among Various Areas in Panoramic Radiographs

  • 1Department of Periodontology and Research Institute for Periodontal Regeneration, Yonsei University College of Dentistry, Seoul, Korea. shchoi726@yuhs.ac
  • 2Department of Periodontology, Sahmyook Adventist Dental Hospital, Seoul, Korea.
  • 3Department of Oral and Maxillofacial Surgery, Sahmyook Adventist Dental Hospital, Seoul, Korea.


The objective of the present article is to determine whether there are differences in vertical enlargement ratio among various sites within both jaws in a panoramic radiograph.
Two hundred and seventy-threeimplant sites in panoramic radiographs were evaluated by two observers. Magnification ratios at various sites in both jaws were calculated and compared with each other. RESULT: The average vertical enlargement ratio in the panoramic radiograph was 1.264 and this value was larger than original ratio 1.250. Although vertical magnification ratio of maxillary molar area was higher than that of mandibular molar area, every group showed similar magnification ratio in clinical respect.
Vertical magnification ratio of the maxillary molar area is statistically higher than that of the mandibular molar area in the panoramic radiograph, but it is clinically negligible.


Dental implants; Radiographic magnification; Radiography; panoramic
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