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Comparison of mandibular anterior alveolar bone thickness in different facial skeletal types

Korean Journal of Orthodontics 2010³â 40±Ç 5È£ p.314 ~ 324
±èÀ±¼ö, Â÷Á¤¿­, À¯Çü¼®, ȲÃæÁÖ,
¼Ò¼Ó »ó¼¼Á¤º¸
±èÀ±¼ö ( Kim Yoon-Soo ) - ¿¬¼¼´ëÇб³ Ä¡°ú´ëÇÐ ±³Á¤Çб³½Ç
Â÷Á¤¿­ ( Cha Jung-Yul ) - ¿¬¼¼´ëÇб³ Ä¡°ú´ëÇÐ ±³Á¤Çб³½Ç
À¯Çü¼® ( Yu Hyung-Seog ) - ¿¬¼¼´ëÇб³ Ä¡°ú´ëÇÐ ±³Á¤Çб³½Ç
ȲÃæÁÖ ( Hwang Chung-Ju ) - ¿¬¼¼´ëÇб³ Ä¡°ú´ëÇÐ ±³Á¤Çб³½Ç

Abstract

º» ¿¬±¸´Â ¼ºÀΠȯÀÚ¸¦ ´ë»óÀ¸·Î ¾È¸é°ñÀÇ ¼öÆòÀû, ¼öÁ÷Àû °ñ°Ý ÇüÅ¿¡ µû¸¥ ÇÏ¾Ç ÀüÄ¡ºÎ Ä¡Á¶°ñÀÇ ¼ø¼³Ãø µÎ²²¸¦ ÇÏ¾Ç ÀüÄ¡ Ä¡ÃàÀ» ±âÁØÀ¸·Î °èÃøÇÏ°í, ÇÏ¾Ç À̺ΠġÁ¶°ñÀÇ ´Ü¸éÀûÀ» ºñ±³ÇØ ÇüÅÂÇÐÀû Â÷À̸¦ È®ÀÎÇØ º¸±â À§ÇÏ¿© ½ÃÇàµÇ¾ú´Ù. 20¼¼ ÀÌ»ó ¼ºÀΠȯÀÚµéÀÇ ÃÊÁø ½Ã Ãø¸ðµÎºÎ ¹æ»ç¼± »çÁøÀ» »ç¿ëÇÏ¿©, ¼öÆòÀû, ¼öÁ÷Àû ºÐ·ù ±âÁØ¿¡ µû¶ó 9±ºÀ¸·Î ºÐ·ùÇÏ¿© ¹«ÀÛÀ§·Î 30¸í(³²ÀÚ 15¸í, ¿©ÀÚ 15¸í)¾¿, ÃÑ 270¸íÀ» ÃßÃâÇÏ¿´´Ù. ¼öÆòÀû °ñ°Ý ÇüŸ¦ ÆÇ´ÜÇÏ´Â ±âÁØÀ¸·Î ANB °¢µµ°¡ »ç¿ëµÇ¾úÀ¸¸ç, ¼öÁ÷Àû °ñ°Ý ÇüŸ¦ ÆÇ´ÜÇÏ´Â ±âÁØÀ¸·Î´Â ÇϾÇÆò¸é°¢(SN-MP °¢µµ)À» »ç¿ëÇÏ¿´´Ù. Ãø¸ðµÎºÎ ¹æ»ç¼± »çÁø¿¡¼­ ÇÏ¾Ç ÀüÄ¡ºÎ Ä¡Á¶°ñÀÇ Çù¼³Ãø µÎ²²¿Í ÇÏ¾Ç À̺ΠġÁ¶°ñÀÇ ´Ü¸éÀûÀ» °èÃøÇÏ¿© ÇüÅÂÇÐÀû Â÷À̸¦ È®ÀÎÇØ º¸¾Ò´Ù. ¿¬±¸ °á°ú·Î high angle groupÀº low angle group°ú average group¿¡ ºñÇØ CEJ ÇϹæ 2 mm ºÎÀ§ ¾Æ·¡ÀÇ Çù¼³Ãø Ä¡Á¶°ñ°ú ¸ðµç ºÎÀ§ÀÇ ¼³Ãø Ä¡Á¶°ñ¿¡¼­ Åë°èÀûÀ¸·Î À¯ÀÇÇÏ°Ô ¾ãÀº µÎ²²¸¦ º¸¿´À¸¸ç (p £¼ 0.05), low angle group°ú average group Áß¿¡¼­ Class I, II groupÀº ¸ðµç ºÎÀ§¿¡¼­ Class I average group¿¡ ºñÇØ À¯»çÇϰųª Åë°èÀûÀ¸·Î À¯ÀÇÇÏ°Ô µÎ²¨¿î Ä¡Á¶°ñ µÎ²²¸¦ º¸¿´´Ù (p £¼ 0.05). Average group ³»¿¡¼­ Class III groupÀº ClassI, II group¿¡ ºñÇØ Ä¡±Ù Áß°£ ºÎÀ§ÀÇ Çù¼³Ãø°ú ¼³Ãø¿¡¼­ Åë°èÀûÀ¸·Î À¯ÀÇÇÏ°Ô ¾ãÀº Ä¡Á¶°ñ µÎ²²¸¦ º¸¿´À¸¸ç (p £¼ 0.05), high angle group Áß¿¡¼­µµ ƯÈ÷ Class IIIÀÎ high angle group¿¡¼­ ´õ ¾ãÀº Æò±Õ Ä¡Á¶°ñ µÎ²²¸¦ º¸¿´´Ù. ¼öÁ÷Àû ¾È¸é °ñ°Ý ÇüÅ¿¡ µû¶ó ÇÏ¾Ç À̺ΠġÁ¶°ñÀÇ ´Ü¸éÀûÀº Åë°èÀûÀ¸·Î À¯ÀÇÇÑ Â÷À̸¦ º¸ÀÌÁö ¾Ê¾Ò´Ù (p £¾ 0.05). ÀÌ»óÀÇ °á°ú¿¡¼­ ¼ºÀÎÀÇ ±³Á¤ Ä¡·á ½Ã Class IIIÀ̸鼭µµ high angleÀ» º¸À̴ ȯÀÚ¿¡¼­´Â ÇÏ¾Ç ÀüÄ¡ºÎ¿¡¼­ ¾ãÀº Ä¡Á¶°ñ µÎ²²¸¦ °¡Áö°Ô µÇ´Â °æ¿ì°¡ ¸¹À¸¹Ç·Î, ÇÏ¾Ç ÀüÄ¡ÀÇ À§Ä¡¸¦ °áÁ¤ÇÒ ¶§ ÁÖÀǸ¦ ±â¿ï¿©¾ß ÇÒ °ÍÀ¸·Î »ý°¢ÇÑ´Ù.

Objective: The purpose of this study was to determine differences of mandibular anterior alveolar bone thickness
and symphysial cross sectional area in 9 different horizontal and vertical facial types.

Methods: By using the initial cephalometric radiographs of 270 adult patients (male 135, female 135), the authors measured the buccolingual thickness of anterior alveolar bone on the basis of the root axis and symphysial cross sectional distance.

Results: The high angle group showed significantly thinner buccolingual alveolar bone width except for the CEJ area and lingual alveolar bone width (p £¼ 0.05). The low angle group and Class I, II average group showed similar or
significantly thicker alveolar bone width than the Class I average group (p £¼ 0.05). The Class III average group showed significantly thinner buccolingual and lingual alveolar bone width than Class I and II average groups (p £¼ 0.05). The Class III high angle group showed minimal alveolar bone width in all facial skeletal types. No significant difference was found in the symphysial cross sectional area of the different vertical facial skeletal types (p £¾ 0.05).

Conclusions: The results of this study found that Class III high angle patients have thinner mandibular anterior alveolar bone thickness; therefore, more attention will be needed to determine the incisor position during orthodontic treatment for this group of patients.

Å°¿öµå

¾È¸é °ñ°Ý ÇüÅÂ; ÇÏ¾Ç ÀüÄ¡ºÎ Ä¡Á¶°ñ µÎ²²; ÇÏ¾Ç À̺Π¸éÀû; ¼ºÀΠȯÀÚ
Facial skeletal type; Mandibular anterior alveolar bone width; Symphysial cross section; Adult patient

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