Orthopantomograph에 있어서 像의 變化에 關한 硏究 = THE STUDY OF THE IMAGE CHANGES IN THE ORTHOPANTONROGRAPH

다국어 초록 (Multilingual Abstract)

The purpose of this study is to obtain the enshortening and elongation rate of image in orthopantomograph.
The subjects were consisted of 15 dry skulls attached with radiopaque materials on each anatomical points.
The length measurements were performed between two points on dry skull, and between two points on film.
The results are as follows:
1. The enshortening and elongation rate between two anatomical points
(1) ANS↔infraorbital foramen(left: +1.3%, right: +0.7%)
(2) ANS↔maxillary tuberosity(left: -11.7%, right: -14.3%)
(3) Zygomatic arch length(left: -4.8%, right: -8.9%)
(4) first molar↔infraorbital foramen(left: +19.8%, right: +24%)
(5) inter-infraorbital foramen length(-21.4%)
(6) inter-first molar length(-31.8%)
(7) inter-mental foramen length(+1.4%)
(8) mental foramen↔mandible angle(left: +3.3%, right: +3.3%)
(9) mental foramen↔lingula(left: +8.2%, right: +3.3%)
(10) mental foramen↔condyle head(left: +5.2%, right: +4.5%)
(11) mandible↔condyle head(left: +15.4%, right: +16.4%)
2. The closer the object is to the occlusal plane and the median line, the smaller it appears.

목차 (Table of Contents)

• Ⅰ. 諸論
• Ⅱ. 硏究資料 및 硏究放法
• Ⅲ. 硏究成績
• Ⅳ. 總括 및 考按
• Ⅴ. 結論
• 參考文獻
• 英文抄錄