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Quantitative evaluation of cortical bone and soft tissue thickness in the mandible

Korean Journal of Orthodontics 2007³â 37±Ç 3È£ p.0 ~ 0
À̼ö°æ, ÀüÀ±½Ä, ÀÓ¿øÈñ,
¼Ò¼Ó »ó¼¼Á¤º¸
À̼ö°æ ( Lee Soo-Kyung ) - ÀÌÈ­¿©ÀÚ´ëÇб³ ÀÓ»óÄ¡ÀÇÇдëÇпø
ÀüÀ±½Ä ( Chun Youn-Sic ) - ÀÌÈ­¿©´ë ÀÇ°ú´ëÇÐ Ä¡°ú±³Á¤ÇÐ
ÀÓ¿øÈñ ( Lim Won-Hee ) - ÀÌÈ­¿©´ë ÀÇ°ú´ëÇÐ Ä¡°ú±³Á¤ÇÐ

Abstract

ÇöÀç ±³Á¤¿ë ¹Ì´Ï ÀÓÇöõÆ®ÀÇ ½Ä¸³ºÎÀ§¿¡ ´ëÇÑ ¿¬±¸´Â ÁÖ·Î ±¸Ä¡ºÎ Ä¡±Ù»çÀÌ °ø°£¿¡ ÁýÁßµÇ¾î ¿ÔÀ¸¸ç, ¿¬Á¶Á÷¿¡ °üÇÑ ¿¬±¸´Â ºÎÁ·ÇÏ´Ù. º» ¿¬±¸ÀÇ ¸ñÀûÀº ÇϾǰñ¿¡¼­ ÀüÄ¡ºÎ¿Í ±¸Ä¡ºÎÀÇ Ä¡±Ù»çÀÌ ÇÇÁú°ñ°ú ¿¬Á¶Á÷ µÎ²²¸¦ ÃøÁ¤ÇÏ¿© ÇغÎÇÐÀûÀÎ Áöµµ¸¦ ¸¸µé°í, Çѱ¹ÀÎÀÇ Æò±Õ ºÎÂøÄ¡ÀºÀÇ Æø°æÀ» Á¦½ÃÇϴµ¥ ÀÖ´Ù. ¿¬±¸¸¦ À§ÇÏ¿© ÀÚ¿øÇÑ ³²ÀÚ 15¸í, ¿©ÀÚ 15¸í ÃÑ 30¸íÀ» ´ë»óÀ¸·Î ÇÏ¿´À¸¸ç, Æò±Õ¿¬·ÉÀº 27¼¼ 3°³¿ùÀ̾ú´Ù. ±¸°­ ³» ÀλóÀ» äµæÇÑ ÈÄ ¼®°í¸ðÇüÀ» ¸¸µé¾î 0.5 mmµÎ²²ÀÇ ÆòÆÇÀ¸·Î ½ºÅÙÆ®¸¦ Á¦ÀÛÇÏ¿´´Ù. ½ºÅÙÆ®ÀÇ ÁßÀýÄ¡¿¡¼­ Á¦1´ë±¸Ä¡±îÁö Ä¡±Ù»çÀÌ Ä¡Àºº¯¿¬À» ¿¬°áÇÑ ¼±¿¡ ¹æ»ç¼± ºÒÅõ°ú¼ºÀÇ Ç¥½ÄÀ» ºÎÂøÇÏ°í ±¸°­ ³»¿¡ ÀåÂøÇÑ ÈÄ 3Â÷¿ø CT ¿µ»óÀ» ¾ò°í, °¢ Ä¡±Ù»çÀÌ Ä¡Á¶Á¤ ÇϹ濡¼­ 2, 4, 6, 8 mmºÎÀ§ÀÇ ÇÇÁú°ñ µÎ²²¸¦ ÃøÁ¤ÇÏ¿´´Ù. ¿¬Á¶Á÷ µÎ²²´Â ½ºÅÙÆ®ÀÇ °¢ Ä¡±Ù»çÀÌ Ä¡Á¶Á¤ ÇϹ濡¼­ 2, 4, 6, 8 mmºÎÀ§¿¡ ±¸¸ÛÀ» ¶Õ°í ±¸°­ ³»¿¡¼­ ±Ù°üÄ¡·á¿ë ÆÄÀÏÀ» ¿¬Á¶Á÷¿¡ Åë°ú½ÃÄÑ ÃøÁ¤ÇÏ¿´´Ù. ¼®°í¸ðÇü »ó¿¡¼­ ÁßÀýÄ¡¿¡¼­ Á¦1´ë±¸Ä¡±îÁö °¢ Ä¡±ÙÁß¾Ó ºÎÀ§¿¡¼­ ºÎÂøÄ¡ÀºÀÇ Æø°æÀ» ÃøÁ¤ÇÏ¿´´Ù. ¿¬±¸°á°ú ÇϾǰñ¿¡¼­ Àüü´ë»óÀÚÀÇ Æò±Õ ÇÇÁú°ñ µÎ²²´Â 1.33{pm}0.38mmÀ̾úÀ¸¸ç ÀüÄ¡ºÎ¿¡¼­ ±¸Ä¡ºÎ·Î °¥¼ö·Ï µÎ²¨¿öÁö°í, Æò±Õ ¿¬Á¶Á÷ µÎ²²´Â 1.49{pm}0.54mmÀ̾úÀ¸¸ç Ä¡±Ù´Ü ÂÊÀ¸·Î ³»·Á°¡¸é¼­ µÎ²²°¡ º¯ÇÏÁö ¾Ê¾Ò´Ù. Æò±Õ Àüü µÎ²²´Â 2.82{pm}0.70mmÀ̾úÀ¸¸ç ÀüÄ¡ºÎ¿¡¼­ ±¸Ä¡ºÎ·Î °¥¼ö·Ï µÎ²¨¿öÁ³´Ù. ºÎÂøÄ¡ÀºÀÇ Æø°æÀº ÀüÄ¡ºÎ°¡ ±¸Ä¡ºÎº¸´Ù ³Ð¾ú´Ù. ÀÌ»óÀÇ °á°ú´Â ÇÇÁú°ñ°ú ¿¬Á¶Á÷ µÎ²², ºÎÂøÄ¡ÀºÀÇ Æø°æÀ» °í·ÁÇÏ¿© ¹Ì´Ï ÀÓÇöõÆ®ÀÇ ½Ä¸³ºÎÀ§¸¦ °áÁ¤ÇÏ´Â °ÍÀÌ ÇÊ¿äÇÔÀ» ½Ã»çÇÏ¿´´Ù.

Objective: The purpose of this study was to provide an anatomical reference for cortical bone and soft tissue thickness, and the attached gingiva width in the mandible.

Methods: Fifteen males and fifteen females participated in this study. An acrylic template was fabricated and the radiopaque markers were bonded on the estimated alveolar crest to take measurements of the hard and soft tissue thickness at the same locations. CT images were taken in samples wearing an acrylic template. Cortical bone and soft tissue thickness were measured at 2, 4, 6 and 8 mm from the alveolar crest in interradicular spaces from central incisor to first permanent molar. The attached gingival width was calibrated.

Results: Cortical bone thickness was 1.33{pm}0.38mm and soft tissue thickness was 1.49{pm}0.54mm. Cortical bone thickness was increased in the posterior area, while it was not the case for the soft tissue thickness. In addition, the total thickness was 2.82{pm}0.70. The attached gingival width was wider in the anterior area compared to that in posterior area.

Conclusion: These results suggest that the attached gingiva width should be considered upon placement of mini-implants in the mandibular posterior area for orthodontic anchorage.

Å°¿öµå

¹Ì´Ï ÀÓÇöõÆ®;ÇÇÁú°ñ;¿¬Á¶Á÷;ºÎÂøÄ¡Àº Æø°æ
Mini-implant;Cortical bone;Soft tissue;Attached gingival width

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