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Evaluation of Bonwill triangle using cone beam computerized tomography in Korean

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°øÇöÁØ, ¿À»óõ,
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°øÇöÁØ ( Kong Hyun-Jun ) - ¿ø±¤´ëÇб³ Ä¡°ú´ëÇÐ Ä¡°úº¸Ã¶Çб³½Ç
¿À»óõ ( Oh Sang-Chun ) - ¿ø±¤´ëÇб³ Ä¡°ú´ëÇÐ Ä¡°úº¸Ã¶Çб³½Ç

Abstract

¸ñÀû: º» ¿¬±¸ÀÇ ¸ñÀûÀº ÄܺöÇü Àü»êÈ­´ÜÃþ¿µ»ó(cone-beam computerized tomography)À» ÀÌ¿ëÇÏ¿© Çѱ¹ÀÎÀÇ º»Àª »ï°¢À» Æò°¡ÇÔÀ¸·Î½á ±×°£ ¼­¾çÀÎÀ» ±âÁØÀ¸·Î Á¦½ÃµÈ º»Àª »ï°¢ °ü·Ã ¼öÄ¡¿Í ºñ±³Çϱâ À§ÇÔÀÌ´Ù.

¿¬±¸ Àç·á ¹× ¹æ¹ý: ¿ø±¤´ëÇб³ Ä¡°ú´ëÇÐ ´ëÀüÄ¡°úº´¿ø¿¡ ³»¿øÇÏ¿© Cone-beam CT¸¦ ÃÔ¿µÇÑ È¯ÀÚ Áß, º» ¿¬±¸ÀÇ ±âÁØ¿¡ÀûÇÕÇÑ Çѱ¹ÀÎ 120¸í(³²¼º 60¸í, ¿©¼º 60¸í)ÀÌ ¼±ÅõǾúÀ¸¸ç Invivo 5.1 (Anatomage, San Jose, USA)°¡ Cone-beam CT scanÀ» ºÐ¼®Çϱâ À§ÇØ »ç¿ëµÇ¾ú´Ù. ÃàÀÇ ¹æÇâ¼³Á¤À» ½ÃÇàÇÑ ÈÄ, °úµÎ°£ °Å¸®´Â °¢ °úµÎÀÇ Áß½ÉÁ¡À» ÁöÁ¤ÇÏ¿© ÃøÁ¤ÇÏ¿´À¸¸ç, °úµÎ-ÀýÄ¡°£ °Å¸®´Â °úµÎ Áß½ÉÁ¡°ú ÇÏ¾Ç ¾ç ÁßÀýÄ¡ Àý´Ü¿¬ÀÇ Á¢ÃËÁ¡À» ÁöÁ¤ÇÏ¿© ÃøÁ¤ÇÏ¿´´Ù. ¼öÁýµÈ ÀÚ·á´Â SPSS Version 23.0 (IBM Inc., Armonk, USA)À» ÀÌ¿ëÇÏ¿© ºÐ¼®ÇÏ¿´°í, independent t-test¸¦ ÀÌ¿ëÇÏ¿© ¼ºº°¿¡ µû¸¥ Åë°èÀû À¯ÀǼºÀ» °ËÁõÇÏ¿´´Ù.

°á°ú: Çѱ¹ÀÎÀÇ Æò±Õ °úµÎ°£ °Å¸®´Â 105.9 mm¿´À¸¸ç, ³²¼º(108.3 mm)ÀÌ ¿©¼º(103.4 mm)¿¡ ºñÇØ Åë°èÇÐÀûÀ¸·Î À¯ÀÇÇÏ°Ô Å©°Ô ³ªÅ¸³µ´Ù. Çѱ¹ÀÎÀÇ Æò±Õ °úµÎ-ÀýÄ¡°£ °Å¸®´Â 105.2 mm¿´À¸¸ç, ³²¼º(108.1 mm)ÀÌ ¿©¼º(102.3 mm)¿¡ ºñÇØ Åë°èÇÐÀûÀ¸·Î À¯ÀÇÇÏ°Ô Å©°Ô ³ªÅ¸³µ´Ù.

°á·Ð: º» ¿¬±¸¿¡¼­ ÃøÁ¤µÈ Çѱ¹ÀÎÀÇ °úµÎ°£ °Å¸®´Â 105.9 mm·Î ¼­¾çÀÎÀ» ´ë»óÀ¸·Î Á¦½ÃµÈ 110 mm¿¡ ºñÇØ ÀÛÀº °ªÀ» º¸¿´À¸¸ç, ³²¼ºÀÌ ¿©¼º¿¡ ºñÇØ Åë°èÇÐÀûÀ¸·Î À¯ÀÇÇÏ°Ô Å©°Ô ³ªÅ¸³µ´Ù. º» Á¦ÇÑµÈ ¿¬±¸ °á°ú¸¦ ±Ù°Å·Î Çѱ¹ÀÎÀÇ º¸Ã¶Àû ¼öº¹½Ã °úµÎ°£ °Å¸®¸¦ Á» ´õ °³Àο¡ ¸Â°Ô Á¶ÀýÇÒ ¼ö ÀÖ´Â ±³Çձ⠻ç¿ëÀÌ ÇÊ¿äÇÏ´Ù°í »ç·áµÈ´Ù.

Purpose: The aim of this study was to evaluate the Bonwill triangle of Korean using the cone beam computerized tomography (Cone-beam CT).

Materials and Methods: 120 Koreans (60 males and 60 females) who visited Daejeon Dental College Hospital of Wonkwang University and who underwent the Cone-beam CT were selected. The Cone-beam CT images were analysed with Invivo 5.1 (Anatomage, San Jose, USA). After reorientation of axis, the intercondylar distance was measured by clicking both middle points of condyle. And the condyle-incisor distance was measured by clicking the middle point of condyle and contact point of the mandibular central incisor¡¯s incisal edge. The collected data were analysed using the SPSS Version 23.0 (IBM Inc., Armonk, USA) and statistical significance was verified by gender using independent t-test.

Results: The mean intercondylar distance of Korean was 105.9 mm, and the male (108.3 mm) was statistically significantly larger than the female (103.4 mm). The mean condyle-incisor distance of Korean was 105.2 mm, and the male (108.1 mm) was statistically significantly larger than the female (102.3 mm).

Conclusion: The mean intercondylar distance of Korean in this study was 105.9 mm that was smaller than well-known 110 mm of Caucasian and the male was statistically significantly larger than the female. Within the limitations of this study, it would be necessary to use the articulator which can adjust the intercondylar distance according to the individual for prosthodontic treatment of Korean.

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Bonwill triangle; articulator; intercondylar distance; cone-beam CT

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