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Changes of Occlusion following the Placement of Preformed Metal Crown to the Permanent First Molar in Children and Adolescents

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±èÁö¿õ, À̳­¿µ, Áö¸í°ü, ÀÌ»óÈ£,
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±èÁö¿õ ( Kim Ji-Woong ) - Chosun University School of Dentistry Department of Pediatric Dentistry
À̳­¿µ ( Lee Nan-Young ) - Chosun University School of Dentistry Department of Pediatric Dentistry
Áö¸í°ü ( Jih Myeong-Kwan ) - Chosun University School of Dentistry Department of Pediatric Dentistry
ÀÌ»óÈ£ ( Lee Sang-Ho ) - Chosun University School of Dentistry Department of Pediatric Dentistry

Abstract

ÀÌ ¿¬±¸ÀÇ ¸ñÀûÀº ½ÉÇÑ ¿ì½Ä ¶Ç´Â Àú±¤È­¿¡ ÀÌȯµÈ Á¦1´ë±¸Ä¡¿¡ ±â¼º±Ý¼Ó°üÀ» ¼öº¹ÇÑ ÈÄ ±³ÇÕ º¯È­¿¡ ´ëÇØ Æò°¡ÇÏ´Â °ÍÀÌ´Ù.
Á¦1´ë±¸Ä¡°¡ ±³ÇÕ Æò¸é±îÁö µµ´ÞÇÏ¿© ±³ÇյǴ ȯÀÚ Áß ±âÁØ¿¡ ºÎÇÕÇÏ´Â 24¸íÀÇ È¯ÀÚ¸¦ ´ë»óÀ¸·Î ¿¬±¸¸¦ ÁøÇàÇÏ¿´´Ù. ÇϳªÀÇ Á¦1´ë±¸Ä¡¿¡ ±â¼º±Ý¼Ó°üÀ¸·Î ¼öº¹Ä¡·á¸¦ ÁøÇàÇÏ¿´´Ù. Ä¡·á Àü, Ä¡·á Á÷ÈÄ, 4ÁÖ ÈÄ, 8ÁÖ ÈÄ °ËÁø¸¶´Ù T-Scan ¥²À» »ç¿ëÇÏ¿© ÃÖ´ë±³µÎ°¨ÇÕÀ§¿¡¼­ ±³ÇÕ·Â ºÐÆ÷¸¦ ÃøÁ¤ÇÏ¿´°í µðÁöÅÐ ¹ö´Ï¾î Ķ¸®ÆÛ·Î ¼öÁ÷ÇÇ°³¸¦ ÃøÁ¤ÇÏ¿´À¸¸ç Á¤Áß¼±ÀÇ º¯È­¸¦ Á¶»çÇÏ¿´´Ù. 8ÁÖ ÈÄ °ËÁø¿¡¼­´Â ¼³¹® Á¶»ç¸¦ ÁøÇàÇÏ¿´´Ù.
´ëºÎºÐ Ä¡·á Àü°ú ºñ±³Çؼ­ Ä¡·á Á÷ÈÄ ¾Ç±Ã¿¡¼­ ¼öº¹ÇÑ ÂÊ°ú ¼öº¹ÇÏÁö ¾ÊÀº ÂÊ »çÀÌÀÇ ±³ÇÕ·Â ºÐÆ÷°¡ ¿ªÀüµÇ¾úÀ¸¸ç ¼öÁ÷ÇÇ°³´Â °¨¼ÒÇß´Ù. ÇÏÁö¸¸ 4ÁÖ ÈÄ¿¡ ÁÂ, ¿ìÃø ±³ÇÕ·ÂÀÌ ÆòÇüÀ» ÀÌ·ç¾ú°í ¼öº¹ÇÑ Á¦1´ë±¸Ä¡¿Í ¼öº¹ÇÏÁö ¾ÊÀº Á¦1´ë±¸Ä¡ÀÇ ±³ÇÕ·Â ºÐÆ÷´Â ºñ½ÁÇÑ°ªÀ» °¡Á³´Ù. ¶ÇÇÑ º¯È­ÇÑ ¼öÁ÷ÇÇ°³, Á¤Áß¼±Àº Ä¡·á Àü »óÅ·Πȸº¹µÇ¾ú°í Ä¡·á ÈÄ À¯ÀÇÇÒ¸¸ÇÑ ÅΰüÀý ¹× ÀúÀÛ ºÒÆí°¨Àº ¾ø¾ú´Ù.
À̹ø ¿¬±¸¸¦ ÅëÇØ ±â¼º±Ý¼Ó°ü ¼öº¹ ÈÄ ÇÑ ´Þ µÚ¿¡ ÀÚ¹ßÀûÀÎ ±³ÇÕ ÆòÇüÀÌ ÀÌ·ç¾îÁø °ÍÀ» È®ÀÎÇÒ ¼ö ÀÖ¾ú´Ù.

The purpose of this study is to evaluate changes of occlusion following the placement of preformed metal crown in the permanent first molar affected by severe caries or hypomineralization.
The study was conducted on 24 patients who met the criteria among the patients with occlusion in the permanent first molar reaching the occlusal plane. Restorative treatment was performed on one first molar using preformed metal crown.
Before treatment, immediately after treatment, after 4 weeks, and after 8 weeks, the T-scan ¥² was used for measuring distribution of bite force at the maximum intercuspal position, and overbite was measured with digital vernier calipers and change of dental midline was surveyed. After 8 weeks, questionnaires survey was conducted.
In most cases, immediately after treatment, the distribution of bite force between the restored side and non-restored side of arch was reversed compared to before treatment, and the overbite was decreased. However, after 4 weeks, bite force of the left and right side was balanced and the distribution of bite force on the restored and non-restored permanent first molars had similar values. Also, the changed overbite and midline were returned to pre-treatment status and there was no significant temporomandibular joint and masticatory discomfort after treatment.
In this study, it was confirmed that spontaneous occlusal equilibrium was achieved one month after the placement of preformed metal crown.

Å°¿öµå

Preformed metal crown; T-Scan ¥²; Permanent first Molar; Dental occlusion

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