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Occlusal Analysis of the Subjects with Chewing Side Preference Using the T-Scan ¥± System

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Abstract

±¸°­¾È¸é ¿µ¿ªÀÇ ÅëÁõÀ̳ª Ä¡¾Æ°á¼Õ, ºÎÁ¤±³ÇÕ °°Àº Ä¡¾ÆÀû ¿ä¼Ò°¡ ÆíÃøÀúÀÛ½À°üÀÇ ÁÖ¿ä¿äÀÎÀ¸·Î ¿©°ÜÁö³ª, Ä¡¾ÆÀû ¿ä¼Ò°¡ ¼±È£ÇÏ´Â ÀúÀÛÃø¿¡ ¿µÇâÀ» ÁÖÁö ¾Ê´Â´Ù´Â ¿¬±¸µéµµ ÀÖ´Ù. º» ¿¬±¸¿¡¼­´Â ÄÄÇ»ÅÍÈ­µÈ ±³Çպм® ½Ã½ºÅÛÀÎ T-Scan ¥± ½Ã½ºÅÛÀ» »ç¿ëÇÏ¿© ÆíÃøÀ¸·Î ÀúÀÛÇÏ´Â ´ë»óÀÚ¿Í ¾çÃøÀ¸·Î ÀúÀÛÇÏ´Â ´ë»óÀÚ »çÀÌ¿¡ ±³ÇÕ¾ç»óÀÇ Æ¯ÀÌÁ¡ÀÌ ÀÖ´ÂÁö Á¶»çÇÏ°í ÆíÃø ÀúÀÛÀÚÀÇ ÁÖÀúÀÛÃø°ú ºñÀúÀÛÃø »çÀÌÀÇ Â÷À̸¦ ÇÔ²² Æò°¡ÇÏ°íÀÚ ÇÏ¿´´Ù.
ÆíÃøÀúÀÛ½À°ü¿¡ ´ëÇÑ ¼³¹®À» ÅëÇÏ¿© 20¸íÀÇ ÆíÃø ÀúÀÛÀÚ(Æò±Õ 25.25¡¾2.84¼¼)¿Í 20¸íÀÇ ¾çÃø ÀúÀÛÀÚ(Æò±Õ 27.00¡¾5.07¼¼)¸¦ ¼±Á¤ÇÏ¿´À¸¸ç Ä¡¾ÆÀû ¹®Á¦³ª ¾Ç°ñÀÇ ÅëÁõÀ̳ª ±â´ÉÀÌ»ó °°Àº ¹®Á¦°¡ ÀÖ´Â °æ¿ì´Â ¸ðµÎ Á¦¿ÜÇÏ¿´´Ù. ½À°üÀû Æó±¸¿Í Ãø¹æ¿îµ¿½ÃÀÇ ±³ÇÕ¾ç»óÀº T-Scan ¥± ½Ã½ºÅÛÀ» ÀÌ¿ëÇÏ¿© ÃøÁ¤ÇÏ¿´´Ù. ½À°üÀû Æ󱸴 ½Ã°£¿¡ µû¶ó Ãʱâ, Áß±â, ¸»±â·Î ³ª´©¾ú´Ù. °¢ ¼¼ ´Ü°è¿¡¼­ÀÇ Á¢ÃËÁ¡ÀÇ ¼ö¿Í ±³ÇÕ·ÂÀÇ ºñÀ²À» ÁÂ¿ì ¾çÃøÀ¸·Î ³ª´©¾î Á¶»çÇÏ¿´´Ù. ½À°üÀû Æ䱸 µ¿¾ÈÀÇ °æ°ú½Ã°£ ¹× Ä¡¾Æ È°ÁÖ¸éÀû, Á¿ìÃø °¢°¢ÀÇ Ãø¹æ¿îµ¿½Ã°£ÀÌ ÃøÁ¤µÇ¾ú´Ù.
ÆíÃø ÀúÀÛ ½À°üÀ» °¡Áø »ç¶÷µéÀÇ °æ¿ì ¾çÃø ÀúÀÛÀ» ÇÏ´Â »ç¶÷¿¡ ºñÇؼ­ Ä¡¾ÆÀÇ Æò±Õ ±³ÇÕ ¸éÀûÀÌ ÀÛ¾Ò´Ù(p£¼0.005). ½À°üÀû ÆíÃøÀúÀÛÀÚ¿¡¼­ ÀúÀÛÃø°ú ºñÀúÀÛÃøÀ» ºñ±³Çغ¸¾ÒÀ» ¶§ ºñÀúÀÛÃøÀÇ ±³ÇÕ¸éÀûÀº ÀúÀÛÃø¿¡ ºñÇØ ÀÛ¾ÒÀ¸³ª (p£¼0.005), ÆíÃøÀúÀÛÀÚÀÇ ÀúÀÛÃø°ú ¾çÃøÀúÀÛ±ºÀÇ ¾î´À ÇÑÂÊÀÇ ±³ÇÕ¸éÀû »çÀÌ¿¡´Â À¯ÀÇÇÑ Â÷ÀÌ°¡ ¾ø¾ú´Ù. ÃÖÃÊÁ¢Ã˺ÎÅÍ ÃÖ´ë±³µÎ°¨ÇÕÀ§±îÁöÀÇ °æ°ú ½Ã°£ ¹× Ãø¹æ¿îµ¿ ½Ã°£, Ä¡¾ÆÀÇ È°ÁÖ ¸éÀû ¹× ±³ÇÕ·ÂÀÇ ÁÂ¿ì ºñÀ²µµ ¾çÃøÀúÀÛ±º°ú ÆíÃøÀúÀÛ±º »çÀÌ¿¡ À¯ÀÇÇÑ Â÷ÀÌ°¡ ¾ø¾ú´Ù. ÀÌ·¯ÇÑ °á°ú´Â ÀúÀ۽à Á¿ìÃø Áß ±³ÇÕ¸éÀûÀÌ ÀÛÀº ÃøÀ» ÇÇÇÏ¿© ±³ÇÕÈ¿À²ÀÌ ³ôÀº ¹æÇâÀ¸·Î ÀúÀÛÀ» ÇÑ´Ù´Â °ÍÀ» ÀǹÌÇÑ´Ù.

While orofacial pain or various dental factors are generally considered as the primary cause of unilateral chewing tendency, there exist several studies indicating that dental factors did not affect the preferred chewing side. The aim of this study was to examine difference of occlusal scheme between the subjects with and without chewing side preference. The difference between the chewing and non-chewing sides in the unilateral chewing group was investigated as well. Computerized, T-Scan II system was used for occlusal analysis.
20 subjects for the unilateral chewing group (mean age of 25.25¡¾2.84 years) and 20 subjects for the bilateral chewing group (mean age of 27.00¡¾5.07 years) were selected by a questionnaire on presence or absence of chewing side preference and those with occlusal problem or pain and/or dysfunction of jaw were excluded. T-Scan recordings were obtained during maximum intercuspation and excursion movement. The number of contact points, relative occlusal force ratio between right and left sides, tooth sliding area and elapsed time throughout the maximum intercuspation were calculated. Elapsed time for excursion was also investigated. The results of this study shows that the unilateral chewing group had the smaller average tooth contact areas compared with those of the bilateral group (p£¼0.005). In the unilateral chewing group, the contact areas of non-chewing side are smaller than those of chewing side (p£¼0.005). The contact areas on their preferred sides were not significantly different with those of right or left side of the subjects without chewing side preference. There was no significant difference in the elapsed time during maximum intercuspation and lateral excursion, the sliding areas and relative of right-to-left occlusal force ratio between the two groups.
From the results of this study, it is likely that individuals prefer chewing on the side with more contact areas for efficient chewing.

Å°¿öµå

Unilateral chewing;Occlusal analysis;T-scan ¥± system;ÆíÃøÀúÀÛ;±³Çպм®;T-scan ¥± ½Ã½ºÅÛ

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