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An experimental study of cutting efficiency of air-driven diamond burs on human tooth

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È«Áø¼± ( Hong Jin-Sun ) - ¼­¿ï´ëÇб³ Ä¡ÀÇÇдëÇпø Ä¡°úº¸Ã¶Çб³½Ç
¿©Àμº ( Yeo In-Sung ) - ¼­¿ï´ëÇб³ Ä¡°ú´ëÇÐ Ä¡°úº¸Ã¶Çб³½Ç
±è¼ºÈÆ ( Kim Sung-Hun ) - ¼­¿ï´ëÇб³ Ä¡ÀÇÇдëÇпø Ä¡°úº¸Ã¶Çб³½Ç
ÀÌÀçºÀ ( Lee Jai-Bong ) - ¼­¿ï´ëÇб³ Ä¡°ú´ëÇÐ Ä¡°úº¸Ã¶Çб³½Ç
ÇÑÁß¼® ( Han Jung-Suk ) - ¼­¿ï´ëÇб³ Ä¡°ú´ëÇÐ Ä¡°úº¸Ã¶Çб³½Ç
¾çÀçÈ£ ( Yang Jae-Ho ) - ¼­¿ï´ëÇб³ Ä¡°ú´ëÇÐ Ä¡°úº¸Ã¶Çб³½Ç

Abstract

¿¬±¸ ¸ñÀû: Ä¡°ú¿ë ¿¡¾îÅÍºó¿¡ ÀåÂøÇÏ¿© »ç¿ëÇÏ´Â ´ÙÀ̾Ƹóµå ¹ö´Â Ä¡°ú Ä¡·á¿¡¼­ Ä¡¾Æ Çü¼ºÀ» À§ÇÑ ÇʼöÀûÀÎ Àý»è¿ë ȸÀü ±â±¸ÀÌ´Ù. ¹Ýº¹Çؼ­ »ç¿ëµÇ´Â ´ÙÀ̾Ƹóµå ¹ö´Â ¸¶¸ð¸¦ ÀÏÀ¸Å°°Ô µÇ°í ¸¶¸ðµÈ ´ÙÀ̾Ƹóµå ¹ö´Â Ä¡¾Æ Çü¼º½Ã ¿­ ¹ß»ý, Àý»è È¿°ú ÀúÇÏ µîÀÇ ¹®Á¦¸¦ ¹ß»ýÇÏ°Ô µÈ´Ù. º» ¿¬±¸ÀÇ ¸ñÀûÀº ÀÚ¿¬Ä¡¸¦ »ç¿ëÇÏ¿© coarse grit ´ÙÀ̾Ƹóµå ¹öÀÇ Àý»è È¿°ú¸¦ ºñ±³ÇÏ°íÀÚ ÇÏ¿´´Ù.

¿¬±¸ Àç·á ¹× ¹æ¹ý: ÀÓ»ó¿¡ ³Î¸® »ç¿ëµÇ´Â coarse grit ´ÙÀ̾Ƹóµå ¹ö 4Á¾·ù¸¦ ¼±Á¤ÇÏ¿´´Ù: Komet (A»ç), Shofu (B»ç), Premier (C»ç), Mani (D»ç). ¹ß°ÅµÈ »ó¾Ç ÁßÀýÄ¡ÀÇ ¼ø¸éÀ» »ç¿ëÇÏ¿´´Ù. 100 gÀÇ ÈûÀ¸·Î 6 mm ÆøÀ¸·Î 10ȸ ¹Ýº¹ÇÏ¿© ½ÇÁ¦ ÀÓ»ó¿¡¼­¿Í À¯»çÇÑ Ä¡¾Æ Çü¼ºÀ» ÇÏ¿´´Ù. Ä¡¾Æ Çü¼ºÀ» ÇÏÁö ¾ÊÀº coarse grit ´ÙÀ̾Ƹóµå ¹ö¸¦ ´ëÁ¶±ºÀ¸·Î ÇÏ¿´°í, 1°³ (test 1), 2°³ (test 2), 3°³ (test 3), ±×¸®°í 4°³ (test 4)ÀÇ Ä¡¾Æ Çü¼ºÀ» ÇÑ coarse grit ´ÙÀ̾Ƹóµå ¹öÀÇ ¸¶¸ð ¾ç»óÀ» °øÃÊÁ¡ ·¹ÀÌÀú ÁÖ»ç Çö¹Ì°æÀ¸·Î Ç¥¸é °ÅÄ¥±â °ªÀ» ´ÙÀ̾Ƹóµå ¹öÀÇ Ã·ºÎ, Áß°£, ±×¸®°í ÇϴܺΠµîÀÇ 3°÷¿¡¼­ ÃøÁ¤ÇÏ¿´°í, ÁÖ»çÀüÀÚ Çö¹Ì°æ (SEM)À¸·Î Ç¥¸é ÇüŸ¦ Æò°¡ÇÏ¿´°í, Ç¥¸é °ÅÄ¥±â´Â one-way ANOVA·Î ºÐ¼®ÇÏ¿´´Ù.

°á°ú: °øÃÊÁ¡ ·¹ÀÌÀú ÁÖ»ç Çö¹Ì°æÀ¸·Î Ç¥¸é °ÅÄ¥±â¸¦ ÃøÁ¤ÇÏ¿´´Ù. A»çÀÇ coarse grit ´ÙÀ̾Ƹóµå ¹öÀÇ °æ¿ì ´ëÁ¶±ºÀÇ Ç¥¸é °ÅÄ¥±â °ª (Sa)Àº 52.98 ¥ìmÀε¥ ºñÇØ, test 1Àº48.32 ¥ìm, test 2´Â 46.79 ¥ìm, test 3Àº 45.06 ¥ìm, ±×¸®°í test 4´Â 43.43 ¥ìmÀ» º¸¿´´Ù. B»ç coarse grit ´ÙÀ̾Ƹóµå ¹öÀÇ °æ¿ì °¢°¢ 50.68 ¥ìm, 45.62 ¥ìm, 44.41 ¥ìm, 44.10 ¥ìm, ±×¸®°í 42.46 ¥ìmÀ», C»ç coarse grit ´ÙÀ̾Ƹóµå ¹öÀÇ °æ¿ì 58.02 ¥ìm, 55.53 ¥ìm, 52.22 ¥ìm, 48.26 ¥ìm, ±×¸®°í 45.36 ¥ìmÀ», D»çcoarse grit ´ÙÀ̾Ƹóµå ¹öÀÇ °æ¿ì 50.11 ¥ìm, 46.73 ¥ìm, 45.46 ¥ìm, 42.58 ¥ìm, ±×¸®°í 41.80 ¥ìm À» º¸¿´´Ù. Ä¡¾Æ Çü¼ºÇÑ È½¼ö¿¡ µû¶ó °¢ coarse grit ´ÙÀ̾Ƹóµå ¹ö¿¡¼­ Ç¥¸é °ÅÄ¥±âÀÇ º¯È­´Â Åë°èÀûÀ¸·Î À¯ÀÇÇÏ¿´À¸³ª, °¢ ½Ã½ºÅÛº° À¯ÀǼºÀº °üÂûµÇÁö ¾Ê¾Ò´Ù. SEMÀ¸·Î °üÂû½Ã ´ëÁ¶±º¿¡ ºñÇØ test 4¿¡¼­ coarse grit ´ÙÀ̾Ƹóµå ¹ö ÀÔÀÚÀÇ ¸¶¸ð¸¦ °üÂûÇÒ ¼ö ÀÖ¾ú´Ù.

°á·Ð: Ä¡¾Æ Çü¼º¿¡ µû¸¥ coarse grit ´ÙÀ̾Ƹóµå ¹öÀÇ Ç¥¸é °ÅÄ¥±â °ª (Sa)À» ºñ±³ÇÑ °á°ú °¢ Ä¡¾Æ Çü¼º¸¶´Ù Åë°èÀûÀ¸·Î À¯ÀÇÇÑ Â÷À̸¦ º¸¿© ¹ö¸¦ ¼öȸ »ç¿ë½Ã Ç¥¸é °ÅÄ¥±â°¡ »ó´çÈ÷ °¨¼ÒÇÒ °ÍÀ¸·Î º¸ÀδÙ. Coarse grit ´ÙÀ̾Ƹóµå ¹öÀÇ »ç¿ë¿¡ µû¸¥ °¢ Á¦Á¶È¸»çº° Â÷À̸¦ ºñ±³ÇÑ °á°ú´Â Åë°èÀûÀ¸·Î À¯ÀÇÇÑ Â÷À̸¦ º¸ÀÌÁö ¾Ê¾Æ Á¦Á¶»ç¿¡ µû¸¥ ´ÙÀ̾Ƹóµå ¹öÀÇ Â÷ÀÌ´Â ¹ß°ßµÇÁö ¾Ê¾Ò´Ù. Coarse grit ´ÙÀ̾Ƹóµå ¹öÀÇ Ç¥¸é Ư¼ºÀ»SEMÀ¸·Î °üÂûÇÑ °á°ú, ´ëÁ¶±º¿¡ ºñÇØ test 4¿¡¼­ ´ÙÀ̾Ƹóµå ¹ö ÀÔÀÚÀÇ ¸¶¸ð¸¦ °üÂûÇÒ ¼ö ÀÖ¾ú´Ù.

PURPOSE: The purpose of this study was to investigate the cutting efficiency of coarse grit diamond burs with air-turbine handpiece on natural tooth.

MATERIALS AND METHODS: Four groups of coarse grit diamond bur were selected: Komet (A), Shofu (B), Premier (C), and Mani (D). The extracted maxillary central incisors were used, and ten cuts were made on each specimen, using the rotary diamond burs. The surface of each bur was measured at the upper, middle, and bottom of the bur with confocal laser scanning microscope and imaged with SEM. The data were analyzed with one-way ANOVA and t-test at the significance level of 0.05.

RESULTS: The surface roughness was measured. At the A diamond bur, the Sa values were 52.93 ¥ìm, 48.32 ¥ìm, 46.79 ¥ìm, 45.06 ¥ìm, and 43.43 ¥ìm for control, test 1, 2, 3, and 4 respectively. The Sa values were 50.68 ¥ìm, 45.62 ¥ìm, 44.41 ¥ìm, 44.10 ¥ìm, and 42.46 ¥ìm for B diamond bur, 58.02 ¥ìm, 55.53 ¥ìm, 52.22 ¥ìm, 48.26 ¥ìm, and 45.36 ¥ìm for C diamond bur, and 50.11 ¥ìm, 46.73 ¥ìm, 45.46 ¥ìm, 42.58 ¥ìm, and 41.80 ¥ìm for D diamond bur. Surface roughness after each bur use showed significant changes, but no significant difference was found in surface roughness change between bur systems.

CONCLUSION: Surface roughness in the same bur system showed significant differences after each tooth preparation. However no statistically significant differences were found in surface roughness between bur systems. The SEM images between control and test 4 showed the abraded particles.

Å°¿öµå

´ÙÀ̾Ƹóµå ¹ö; Àý»è È¿°ú; °øÃÊÁ¡ ·¹ÀÌÀú ÁÖ»çÇö¹Ì°æ; ÁÖ»çÀüÀÚÇö¹Ì°æ
Diamond bur; Cutting efficiency; Confocal laser scanning microscope; SEM

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