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Effect of head positioning on the vertical and horizontal magnification in panoramic radiographs: rotation along the sagittal and transverse plane
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±è¿ë°Ç(Kim Yong-Gun) - °æºÏ´ëÇб³ Ä¡ÀÇÇÐÀü¹®´ëÇпø Ä¡ÁÖ°úÇб³½Ç
º¯Áø¼®(Byun Jin-Seok) - °æºÏ´ëÇб³ Ä¡ÀÇÇÐÀü¹®´ëÇпø ±¸°³»°úÇб³½Ç
¾È¼¿µ(An Seo-Young) - °æºÏ´ëÇб³ Ä¡ÀÇÇÐÀü¹®´ëÇпø ±¸°¾Ç¾È¸é¹æ»ç¼±Çб³½Ç
Abstract
¸ñÀû: ÀÌ ¿¬±¸´Â Æijë¶ó¸¶¹æ»ç¼±»çÁø ÃÔ¿µ ½Ã ȯÀÚÀÇ ¸Ó¸® À§Ä¡°¡ »ó¹æ, ÇϹæ, ÁÂÃø ¹× ¿ìÃøÀ¸·Î ȸÀüµÊ¿¡ µû¸¥ ¼öÆò ¹×
¼öÁ÷ È®´ëÀ²ÀÇ º¯È¸¦ ºñ±³ Æò°¡ÇÏ´Â °ÍÀ̾ú´Ù.
¿¬±¸ Àç·á ¹× ¹æ¹ý: Á÷°æ 4 mmÀÎ ±Ý¼Ó±¸ 5°³¸¦ °ÇÁ¶ µÎ°³°ñÀÇ ÇÏ¾Ç ÀüÄ¡ºÎ(2°³)¿Í ¿ìÃø ´ë±¸Ä¡ºÎ(3°³)ÀÇ Ä¡Á¶°ñ »ó¹æ¿¡
À§Ä¡½ÃÄ×´Ù. »óÇÏ ¹× Á¿ì ȸÀü·®À» Á¶ÀýÇÒ ¼ö ÀÖ´Â µÎ°³°ñ °íÁ¤ÀåÄ¡¿¡ °ÇÁ¶ µÎ°³°ñÀ» °íÁ¤½ÃŲ ÈÄ, ±âÁØ À§Ä¡¿Í ȸÀüµÈ À§Ä¡¿¡¼ Æijë¶ó¸¶¹æ»ç¼±»çÁøÀ» ÃØ¿µÇÏ¿´´Ù.
°á°ú: ±âÁØ À§Ä¡¿¡¼ Æò±Õ ¼öÆò È®´ëÀ²Àº 1.22 ¡¾ 0.01 - 1.44 ¡¾ 0.01À̾ú°í, Æò±Õ ¼öÁ÷ È®´ëÀ²Àº 1.29 ¡¾ 0.00 - 1.35 ¡¾
0.03¿´´Ù. ÀüÄ¡ºÎ¿Í ±¸Ä¡ºÎ ºñ±³½Ã ¼öÆò È®´ëÀ²Àº ÀüÄ¡ºÎ¿¡¼ 1.24 ¡¾ 0.02 - 1.31 ¡¾ 0.03, ±¸Ä¡ºÎ¿¡¼ 1.40 ¡¾ 0.03 - 1.33 ¡¾ 0.02·Î À¯ÀÇÇÑ Â÷ÀÌ°¡ ÀÖ¾ú°í(P < 0.05), ¼öÁ÷ È®´ëÀ²Àº Â÷ÀÌ°¡ ¾ø¾ú´Ù. À§Ä¡ º¯È¿¡ µû¸¥ ¼öÆò È®´ëÀ²Àº 0.88 ¡¾ 0.03 - 3.73 ¡¾ 0.16À¸·Î ±âÁØ À§Ä¡¿Í ºñ±³ ½Ã Åë°èÀûÀ¸·Î À¯ÀÇÇÑ Â÷À̸¦ º¸ÀÎ ¹Ý¸é (P < 0.05), ¼öÁ÷ È®´ëÀ²Àº 1.24 ¡¾ 0.01 - 1.37 ¡¾ 0.02 ·Î Â÷ÀÌ°¡ ¾ø¾ú´Ù.
°á·Ð: ȸÀüµÈ ¸Ó¸®À§Ä¡¿¡¼ Æijë¶ó¸¶¹æ»ç¼±»çÁø ÃÔ¿µ ½Ã ¼öÆò È®´ëÀ²ÀÇ º¯È°¡ Å©´Ù.
Purpose: The purpose of this study was to investigate the effect of head position changes on vertical and horizontal magnification in dental panoramic radiographs.
Materials and Methods: Five 4 mm metal balls were placed above alveolar crest of dry skull considering extraction socket and dental arch. Panoramic radiographs were taken by OP-100D (Instrumentarium Imaging Co.,
Tuusula, Finland) at proper and rotated head position along the sagittal and transverse axis at 3 - 20¡Æ upwardly, downwardly, to the left and to the right rotation. Images were stored in DICOM files and were measured by ruler equipped within INFINITT PACS software.
Results: The mean horizontal magnification was 1.22 ¡¾ 0.01 - 1.44 ¡¾ 0.01 and mean vertical magnification was 1.29 ¡¾ 0.00 - 1.35 ¡¾ 0.02 at standard head position. There was statistical significance of horizontal magnification between the anterior (1.24 ¡¾ 0.02 - 1.31 ¡¾ 0.03) and the posterior area (1.40 ¡¾ 0.03 - 1.33 ¡¾ 0.02) (P < 0.05). Vertical magnification resulted in less variation (1.24 ¡¾ 0.01 - 1.37 ¡¾ 0.02) than horizontal magnification (0.88 ¡¾ 0.03 - 3.73 ¡¾ 0.16) according to the rotation. There was statistical significant difference on horizontal magnification (P < 0.05).
Conclusion: In rotated head position, the horizontal magnification should be considered because these can cause distortion on panoramic radiographs.
Å°¿öµå
¸Ó¸®À§Ä¡, È®´ëÀ², Æijë¶ó¸¶¹æ»ç¼±»çÁø
head position, magnification, panoramic radiographs
KMID :
1004520140300010001
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