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Comparisons of occlusal force according to occlusal relationship, skeletal pattern, age and gender in Koreans

Korean Journal of Orthodontics 2010³â 40±Ç 5È£ p.304 ~ 313
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ÃÖÀ±Á¤ ( Choi Yoon-Jeong ) - ¿¬¼¼´ëÇб³ Ä¡°ú´ëÇÐ ±³Á¤Çб³½Ç
±è°æÈ£ ( Kim Kyung-Ho ) - ¿¬¼¼´ëÇб³ Ä¡°ú´ëÇÐ ±¸°­°úÇבּ¸¼Ò
Á¤ÁÖ·É ( Chung Choo-Ryung ) - ¿¬¼¼´ëÇб³ Ä¡°ú´ëÇÐ µÎ°³¾È¸é±âÇü¿¬±¸¼Ò

Abstract

º» ¿¬±¸´Â Çѱ¹ÀÎ Á¤»ó±³ÇÕÀÚ¿Í ºÎÁ¤±³ÇÕÀÚ »çÀÌÀÇ ±³ÇÕ·ÂÀÇ Å©±â¿Í ±³ÇÕ ½ÃÀÇ Á¢ÃË ¸éÀûÀÇ Â÷ÀÌ ¹× °ñ°Ý ÇüÅÂ¿Í ±³ÇÕ °ü°è, ¿¬·É, ¼ºº°ÀÌ ±³ÇÕ·ÂÀÇ Å©±â¿¡ ¿µÇâÀ» ¹ÌÄ¡´ÂÁö ¾Ë¾Æº¸±â À§ÇØ ½ÃÇàµÇ¾ú´Ù. Á¤»ó±³ÇÕÀÚ 15¸í, ºÎÁ¤±³ÇÕÀÚ 636¸í¿¡¼­ ÀÏȸ¿ë pressure sensitive sheet (Dental Prescale¨Þ 50H, typeR, Fuji Film Corp., Tokyo, Japan)¸¦ ÀÚ¿¬ µÎºÎÀ§¿¡¼­ ÃÖ´ë ±Ù·ÂÀ¸·Î ±³ÇÕÇϵµ·Ï ÇÑ ÈÄ, CCD camera (Occluzer¨Þ FPD 707, Fuji Film Corp., Tokyo, Japan)·Î Æǵ¶ÇÏ¿© ±³ÇÕ·ÂÀÇ Å©±â ¹× Á¢ÃË ¸éÀûÀ» ÃøÁ¤ÇÏ¿´´Ù. Á¤»ó±³ÇÕÀÚ±ºÀÇ ±³ÇÕ·ÂÀÇ Å©±â´Â 744.5 ¡¾ 262.6 N, Á¢Ã˸éÀûÀº 24.2 ¡¾ 8.2 mm2À¸·Î, ºÎÁ¤±³ÇÕÀÚ±ºÀÇ 439.0 ¡¾ 229.9 N, 12.4 ¡¾ 10.7 mm2¿¡ ºñÇØ ±³ÇÕ·ÂÀÇ Å©±â¿Í Á¢ÃË ¸éÀûÀÌ À¯ÀÇÇÏ°Ô ÄÇ´Ù (p £¼ 0.05). ºÎÁ¤±³ÇÕÀÚ±ºÀÇ °æ¿ì ¿¬·É¿¡ µû¸¥ ±³ÇÕ·ÂÀÇ Â÷ÀÌ´Â ¾ø¾úÀ¸³ª, ³²ÀÚ°¡ ¿©ÀÚ¿¡ ºñÇØ Å« ±³ÇÕ·ÂÀ» °¡Áö°í ÀÖ¾ú´Ù (p £¼ 0.05). ¾Ç¾È¸éÀÇ ÀüÈĹæÀûÀÎ °ñ°Ý ÇüŸ¦ ³ªÅ¸³»´Â ANB ¹× °ñ°Ý¼º 1±Þ ºÎÁ¤±³ÇÕ¿¡¼­ÀÇ ±¸Ä¡ºÎÀÇ Angle ºÐ·ù´Â ±³Çշ¿¡ À¯ÀÇÇÑ Â÷À̸¦ ³ªÅ¸³»Áö ¾Ê¾ÒÀ¸³ª, ¼öÁ÷ÀûÀÎ °ñ°Ý ÇüŸ¦ ±¸ºÐÇÏ´Â mandibular plane angle, gonial angleÀÌ Å« °æ¿ì, ±³ÇÕ·ÂÀÌ À¯ÀÇÇÏ°Ô ÀÛ¾Ò´Ù (p £¼ 0.05). ÇÏÁö¸¸, ±³ÇÕ·ÂÀÇ Å©±â¿Í Á¢ÃË ¸éÀû
°£¿¡´Â ³ôÀº »ó°ü°ü°è°¡ Á¸ÀçÇÏ´Â Á¡°ú Á¢ÃË ¸éÀûÀ» ÅëÁ¦ÇÑ »óÅ¿¡¼­ÀÇ °ñ°Ý ÇüÅÂ¿Í ±³ÇÕ·ÂÀÇ Å©±â »çÀÌ¿¡´Â À¯ÀÇÇÒ ¸¸ÇÑ »ó°ü°ü°è°¡ ¾ø´Â Á¡À» °í·ÁÇÑ´Ù¸é ¼öÁ÷ÀûÀÎ °ñ°Ý ÇüÅ°¡ Á÷Á¢ÀûÀ¸·Î ±³Çշ¿¡ ¿µÇâÀ» Áֱ⺸´Ù´Â ¼öÁ÷ÀûÀÎ °ñ°Ý ÇüÅ¿¡ µû¸¥ Á¢ÃË ¸éÀûÀÇ °¨¼Ò°¡ ±³ÇÕ·Â ÀúÇÏ¿¡ °ü¿©ÇÑ´Ù°í ÆǴܵȴÙ.

Objective: The aim of this study was to evaluate the occlusal force and contact area and to find its associating
factors in Koreans.

Methods: Occlusal force and contact area in maximum intercuspation were measured using
the Dental Prescale¨Þ system in 651 subjects (15 with normal occlusion, 636 with various malocclusions divided
into subgroups according to the skeletal pattern, Angle¡¯s molar relationship, age and gender).

Results: Occlusal force of the normal occlusion group (744.5 ¡¾ 262.6 N) was significantly higher than those of the malocclusion group (439.0 ¡¾ 229.9 N, p £¼ 0.05). Occlusal force was similar regardless of differences in ANB angle or Angle¡¯s molar classification, however the increase in vertical dimension significantly reduced occlusal force (p £¼ 0.05).

Conclusions: Occlusal force was significantly lower in the malocclusion group compared to the normal occlusion
group, and in females compared to males, but it was not affected by age, antero-posterior skeletal pattern or molar classification. Although a hyperdivergent facial pattern indicated lower occlusal force compared to a hypodivergent facial pattern, the differences in skeletal pattern were not the primary cause of its decrease, but a secondary result induced by the differences in occlusal contact area according to the facial pattern.

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±³ÇÕ·Â; ±³ÇÕ Á¢ÃË ¸éÀû; ¾Ç¾È¸é °ñ°ÝÇüÅÂ
Occlusal force; Contact area; Maxillofacial skeletal pattern

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SCI(E)
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KoreaMed