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A MORPHOMETRIC STUDY OF THE MAXILLARY PRIMARY FIRST MOLARS USING THREE-DIMENSIONAL SCANNER

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ÀÌÁ¾¹ü ( Lee Jong-Beom ) - ¼­¿ï´ëÇб³ Ä¡°ú´ëÇÐ ¼Ò¾ÆÄ¡°úÇб³½Ç ¹× Ä¡Çבּ¸¼Ò
±èÁ¾Ã¶ ( Kim Chong-Chul ) - ¼­¿ï´ëÇб³ Ä¡°ú´ëÇÐ ¼Ò¾ÆÄ¡°úÇб³½Ç ¹× Ä¡Çבּ¸¼Ò
ÇѼ¼Çö ( Hahn Se-Hyun ) - ¼­¿ï´ëÇб³ Ä¡°ú´ëÇÐ ¼Ò¾ÆÄ¡°úÇб³½Ç ¹× Ä¡Çבּ¸¼Ò
ÀÌ»óÈÆ ( Lee Sang-Hoon ) - ¼­¿ï´ëÇб³ Ä¡°ú´ëÇÐ ¼Ò¾ÆÄ¡°úÇб³½Ç ¹× Ä¡Çבּ¸¼Ò

Abstract

º» ¿¬±¸ÀÇ ¸ñÀûÀº »ó¾Ç Á¦1À¯±¸Ä¡ Ä¡°üÀÇ Å©±â¿Í ÇüÅÂÀû Ư¼ºÀ» 3Â÷¿ø ½ºÄ³³Ê¸¦ ¹Ì¿ëÇÏ¿© °èÃøÇÏ°í ±¹Á¤ ±Ý¼Ó°ü°úÀÇ Å©±â¿Í ÇüÅÂÇÐÀûÀÎ Â÷À̸¦ ºñ±³ÇÏ´Â °ÍÀÌ´Ù.
3Â÷¿ø ·¹ÀÌÀú ½ºÄ³³Ê(Breuckmann opto Tep-HE100, INUS. Korea)·Î ½ºÄµÇÑ 132aud ¾î¸°À̵éÀÇ »ó¾Ç Á¦1À¯±¸Ä¡ °æ¼®°í ¸ðÇüÀ» Rapidform 2004 ÇÁ·Î±×·¥(INUS, Korea)À» ÀÌ¿ëÇÏ¿© °¢ Ä¡¾ÆÀÇ ±Ù¿ø½É°æ°ú Çù¼³°æ, ±³ÇÕ¸é-Ä¡°æºÎ°£ °Å¸®, ±Ù¿ø½É°æ¿¡ ´ëÇÑ Çù¼³°æÀÇ ºñÀ²À» °èÃøÇÏ°í Æò±ÕÄ¡¸¦ ¾ò¾úÀ¸¸ç, ³²³à »ó¾Ç Á¦1À¯±¸Ä¡ÀÇ Æò±ÕÀûÀÎ Å©±â¿Í ÇüŸ¦ ¾ò°í ±â¼º ±Ý¼Ó°ü°ú ºñ±³ÇÏ¿© ´ÙÀ½°ú °°Àº °á°ú¸¦ ¾ò¾ú´Ù.
1. »ó¾Ç Á¦1À¯±¸Ä¡ µð°üÀÇ Á¿ìÃø Å©±â¿¡ À־ À¯ÀÇÇÑ Â÷À̸¦ º¸ÀÌÁö ¾Ê¾Ò´Ù(p<0.05).
2. »ó¾Ç Á¦1À¯±¸Ä¡ Ä¡°üÀÇ ³²³à°£ Å©±â¿¡ À־ ³²ÀÚÀÇ Ä¡°ü Å©±â°¡ À¯ÀÇÇÏ°Ô ´õ Å« °ªÀ» º¸¿´°í(p<0.05), Ä¡°üÀÇ ÇüÅ¿¡ À¯ÀÇÇÑ Ä¡ÀÌ´Â º¸ÀÌÁö ¾Ê¾Ò´Ù(p>0.05).
3. 3Â÷¿ø À̹ÌÁö·Î »ó¾Ç Á¦1À¯±¸Ä¡¸¦ À籸¼ºÇÏ¿© ³ªÅ¸³½ Æò±ÕÀûÀÎ ³²³à »ó¾Ç Á¦1À¯±¸Ä¡ÀÇ Å©±â´Â 3MÀÇ ±â¼º ±Ý¼Ó°ü°ú ºñ±³ ½Ã, ³²ÀÚ´Â ±â¼º ±Ý¼Ó°üÀÇ 4, 5¹ø »çÀÌ, ¿©ÀÚ´Â ±â¼º ±Ý¼Ó°üÀÇ 4¹ø°ú À¯»çÇÏ¿´°í, ÀϼºÀÇ ±â¼º ±Ý¼Ó°ü°ú ºñ±³ ½Ã ±â¼º ±Ý¼Ó°üÀÇ ±Ù¿ø½É°æÀÌ Ä¿¼­ Çù¼³°æÀ» ±âÁØÀ¸·Î ³²ÀÚ´Â 5¹ø, ¿©ÀÚ´Â 4¹ø°ú À¯»çÇÑ Å©±â¸¦ º¸¿´´Ù.
4. 3MÀÇ ±â¼º ±Ý¼Ó°ü¿¡ ºñÇØ À籸¼ºÇÑ Æò±ÕÄ¡ÀÇ Ä¡°ü ÇüÅ°¡ ±Ù½É ¼³Ãø ¿ì°¢ ºÎÀ§, ¿ø½É ¼³Ãø ¿ì°¢ ºÎÀ§¿¡¼­ ´õ dzÀ¶ÇÏ¿´°í, ÇùÃø Ä¡Àº À¶±âÀÇ Ä¡°æºÎ 1/3ºÎÀ§°¡ ´õ dzÀ¶ÇÑ ¾ç»óÀ» º¸¿´À¸¸ç, ³²ÀÚÀÇ Ä¡°üº¸´Ù ´õ dzÀ¶ÇÑ ¾ç»óÀ» º¸¿´´Ù. ÀϼºÀÇ ±â¼º ±Ý¼Ó°üÀº Æò±ÕÄ¡ÀÇ Ä¡°ü Çüź¸´Ù Á¤»ç°¢ÇüÀÇ ÇüŸ¦ ³ªÅ¸³Â°í, ±Ù¿ø½É°æÀÌ ´õ ±ä ¾ç»óÀ» ³ªÅ¸³Â´Ù.

The purpose of this study was to elucidate the size and morphologic characteristics of maxillary primary first molars in Korean children using three-dimensional laser scanner and compare three-dimensional image with preformed stainless steel crown.
Scanned three-dimensional images of dental cast taken from 132 children(male 62, female 70) by three-dimensional laser scanner(Breuckmann opto-Top HE100, INUS, Korea) were used. Mesiodistal diameter, buccolingual diameter, occlusogingival height and crown shape of each image were calculated by Rapidform 2004 program(INUS, Korea). The values were statistically compared by independent samples t-test with 95% of significant level.
The results were as follows :
1. No significant difference in crown size was found between left and right maxillay primary first molar(p>0.05).
2, Significant difference in mesiodistal diameter, buccolingual diameter, buccal occlusogingival height was found between male and female (p<0.05), and crown size of male was bigger than that of female.
3. Average image of maxillay primary first molar was shaped three-dimensionally and measured. In comparison with 3M stainless steel crown, this image was similar with No.4 or No.5 SS crown in male, No.4 in female. In comparison with ILSUNG SS crown, this image was similar with No.5 in male, No.4 in female.
4 Mesiolingual line angle area, distolingual line angle area and buccogingival ridge were more obvious in average image than 3M stainless steel crown. ILSUNG SS crown was more square and had longer mesiodistal diameter than average 3D image.

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3Â÷¿ø ½ºÄ³³Ê;»ó¾Ç Á¦1 À¯±ºÄ¡ Ä¡°ü;Å©±â;ÇüÅÂ
Three-dimensional scanner;Maxillary primary first molar crown;Size;Morphology

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