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Cone-beam CT·ÎºÎÅÍ Á¦ÀÛµÈ Ãø¸ð µÎºÎ°èÃø¹æ»ç¼±»çÁøÀÇ Á¤È®µµ Æò°¡

The reliability of the cephalogram generated from cone-beam CT

Korean Journal of Orthodontics 2007³â 37±Ç 6È£ p.391 ~ 399
°­Áö¿µ, ±è±¤¿ø, ÀÓ¼ºÈÆ,
¼Ò¼Ó »ó¼¼Á¤º¸
°­Áö¿µ ( Kang Ji-Young ) - Á¶¼±´ëÇб³ Ä¡°ú´ëÇÐ ±³Á¤Çб³½Ç
±è±¤¿ø ( Kim Kwang-Won ) - Á¶¼±´ëÇб³ Ä¡°ú´ëÇÐ ±³Á¤Çб³½Ç
ÀÓ¼ºÈÆ ( Lim Sung-Hoon ) - Á¶¼±´ëÇб³ Ä¡°ú´ëÇÐ ±³Á¤Çб³½Ç

Abstract

ÃÖ±Ù computed tomography (CT) µ¥ÀÌÅͷκÎÅÍ ½ÇÁ¦ µÎºÎ°èÃø¹æ»ç¼±»çÁø ÃÔ¿µ±â¿¡¼­ ÃÔ¿µÇÑ »çÁø°ú µ¿ÀÏÇÑ È®´ëÀ²À» °®´Â µÎºÎ°èÃø¹æ»ç¼±»çÁøÀ» Çü¼ºÇÒ ¼ö ÀÖ´Â ±â´ÉÀ» °®Ãá ¼ÒÇÁÆ®¿þ¾î(Accurex, CyberMed, Seoul, Korea)°¡ ¼Ò°³µÇ¾ú´Ù. ÀÌ¿¡ º» ¿¬±¸¿¡¼­´Â cone-beam CT (ÀÌÇÏ CBCT) µ¥ÀÌÅͷκÎÅÍ ÀÌ ¼ÒÇÁÆ®¿þ¾î¸¦ ÀÌ¿ëÇÏ¿© Á¦ÀÛµÈ Ãø¸ð µÎºÎ°èÃø¹æ»ç¼±»çÁø°ú ±âÁ¸ÀÇ µÎºÎ°èÃø¹æ»ç¼±»çÁøÃÔ¿µ±â·Î ÃÔ¿µµÈ Ãø¸ð µÎºÎ°èÃø¹æ»ç¼±»çÁø¿¡¼­ °¢°¢ µÎºÎ°èÃø¹æ»ç¼±»çÁø ºÐ¼®À» ½ÃÇàÇÏ¿© ±× Â÷À̸¦ ºñ±³ÇÔÀ¸·Î½á ¼ÒÇÁÆ®¿þ¾î¸¦ ÅëÇØ CBCT·ÎºÎÅÍ Á¦ÀÛµÈ Ãø¸ð µÎºÎ°èÃø¹æ»ç¼±»çÁøÀÇ È°¿ë °¡´É¼ºÀ» Æò°¡ÇÏ°íÀÚ ÇÏ¿´´Ù. 20¸íÀÇ ±³Á¤ ȯÀÚ¸¦ ´ë»óÀ¸·Î CBCT¿Í Ãø¸ð µÎºÎ°èÃø¹æ»ç¼±»çÁøÀ» µ¿½Ã¿¡ ÃÔ¿µÇÏ¿´´Ù. CBCT·ÎºÎÅÍ Á¦ÀÛµÈ Ãø¸ð µÎºÎ°èÃø¹æ»ç¼±»çÁø°ú ±âÁ¸ ¹æ½ÄÀÇ Ãø¸ð µÎºÎ°èÃø¹æ»ç¼±»çÁø¿¡¼­ µÎºÎ°èÃø ¹æ»ç¼±»çÁø ºÐ¼®À» ½ÃÇàÇÑ ÈÄ µÎ »çÁøÀÇ °èÃøÄ¡ÀÇ Â÷À̸¦ paired t-test·Î °ËÁ¤ÇÏ¿´´Ù. 23°³ÀÇ °èÃøÄ¡µé Áß, 20°³ Ç׸ñ¿¡¼­´Â Åë°èÇÐÀûÀ¸·Î À¯ÀÇÇÑ Â÷ÀÌ°¡ °üÂûµÇÁö ¾Ê¾ÒÀ¸³ª, U1-FH, Mx6 to PTV, Maxillomandibular differenceÀÇ Ç׸ñ¿¡¼­´Â À¯ÀÇÇÑ Â÷ÀÌ°¡ ³ªÅ¸³µ´Ù ÀÌ·¯ÇÑ Â÷ÀÌ´Â CBCT·ÎºÎÅÍ Çü¼ºµÈ Ãø¸ð µÎºÎ°èÃø¹æ»ç¼±»çÁøÀÇ Çػ󵵰¡ ³·¾Æ ÀϺΠÇغÎÇÐÀû ÁöÇ¥¸¦ È®ÀÎÇϱ⠾î·Æ±â ¶§¹®À̸ç, ÀÓ»ó¿¡¼­ CBCT·ÎºÎÅÍ Á¦ÀÛµÈ Ãø¸ð µÎºÎ°èÃø¹æ»ç¼±»çÁøÀ» porion, PTV, condylion°ú °°Àº ÀϺΠÇغÎÇÐÀû ÁöÇ¥¸¦ ÀÌ¿ëÇÏÁö ¾Ê´Â SNA, SNB, U1 to SN, IMPA, interincisal angle µî ÈçÈ÷ »ç¿ëµÇ´Â °£´ÜÇÑ Ãø¸ð µÎºÎ°èÃø¹æ»ç¼±»çÁø °èÃø¿¡ È°¿ë °¡´ÉÇÒ °ÍÀÌ´Ù.

Three-dimensional approaches for the diagnosis and analysis of the dentofacial area are becoming more popular in accordance with the development of cone-beam CT (CBCT). The purposes of this study were to evaluate the reliability of cephalometric measurements of lateral cephalograms generated from a CBCT image by making comparisons with the traditional digital lateral cephalogram, and to evaluate the possibility of the clinical application of CBCT generated cephalogram images.

Methods: Twenty patients whose external auditory meatus could be identified in the CBCT image were selected, and both CBCT and digital cephalograms were taken. Differences between the measurements of both cephalograms were tested by paired t-test.

Results:Among the 22 measurements used, only U1-FH, Mx6 to PTV, and maxillomandibular difference showed statistically significant differences between the CBCT generated cephalogram and the digital cephalogram.

Conclusions: The results suggest that the CBCT generated cephalogram can be used for some cephalometric measurements not requiring porion, PTV, condylion as a landmark (SNA, SNB, U1 to SN, IMPA, interincisal angle, etc.).

Å°¿öµå

Ãø¸ð µÎºÎ°èÃø¹æ»ç¼±»çÁø;µÎºÎ°èÃø¹æ»ç¼±»çÁø ºÐ¼®
Cone-beam CT;Lateral cephalogram;Cephalometric analysis

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