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An evaluation of wear characteristics of light-cured restorative composites on enamel surface

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¹éº´ÁÖ ( Baik Byeong-Ju ) - ÀüºÏ´ëÇб³ Ä¡°ú´ëÇÐ ¼Ò¾ÆÄ¡°úÇб³½Ç ¹× ±¸°­»ýü°úÇבּ¸¼Ò
À̽¿µ ( Lee Seung-Young ) - ÀüºÏ´ëÇб³ Ä¡°ú´ëÇÐ ¼Ò¾ÆÄ¡°úÇб³½Ç ¹× ±¸°­»ýü°úÇבּ¸¼Ò
À̵Îö ( Lee Doo-Cheol ) - ÀüºÏ´ëÇб³ Ä¡°ú´ëÇÐ ¼Ò¾ÆÄ¡°úÇб³½Ç
±èÀç°ï ( Kim Jae-Gon ) - ÀüºÏ´ëÇб³ Ä¡°ú´ëÇÐ ¼Ò¾ÆÄ¡°úÇб³½Ç ¹× ±¸°­»ýü°úÇבּ¸¼Ò

Abstract

º» ¿¬±¸¿¡¼­´Â ÃÖ±Ù Ä¡°úÀÓ»ó¿¡¼­ ÀÌ¿ëµÇ°í ÀÖ´Â 7Á¾ÀÇ º¹ÇÕ·¹ÁøÀ» ½ÃÇèÀç·á·Î ¼±ÅÃÇÑ ´ÙÀ½ ¹ý¶ûÁú°ú º¹ÇÕ·¹Áø ÃæÀüÀç°¡ ´ëÇÕÇÏ´Â °æ¿ìÀÇ ¸¶¸ð ¾ç»óÀ» Á¶»çÇϱâ À§ÇØ ±¤ÁßÇÕÇü º¹ÇÕ·¹Áø°ú Á¦2¼Ò±¸Ä¡ ±³µÎ¸¦ ÇÉ-µð½ºÅ© ±¸µ¿ ¹æ½ÄÀÇ Àüµ¿½Ä ¸¶¸ð½ÃÇè±â¿¡ °íÁ¤ÇÑ ´ÙÀ½ 68.6NÀÇ ÇÏÁßÀ» °¡ÇÑ »óÅ¿¡¼­ 30,000 ȸÀü½ÃÄÑ 1.3¡¿103mÀÇ ¹Ì²ô·³ Á¢ÃËÀ» °¡ÇÏ¿´´Ù. ¸¶¸ð¸¦ Æò°¡Çϱâ À§ÇØ º¹ÇÕ·¹ÁøÀÇ Á¾·ù¿¡ µû¸¥ Á¦2¼Ò±¸Ä¡ ±³µÎÀÇ ¼öÁ÷°í°æ º¯È­, ½ÃÆíÀÇ µÎ²² °¨¼Ò¿Í üÀû ¼Õ½Ç ¹× ¸¶¸ð½ÃÇè ÀüÈÄÀÇ Ç¥¸éÀ» ÁÖ»çÀüÀÚÇö¹Ì°æÀ¸·Î °üÂûÇÏ¿´°í, Ç¥¸é°æµµ°¡ ¸¶¸ðµµ¿¡ ¹ÌÄ¡´Â ¿µÇâÀ» Æò°¡Çϱâ À§ÇØ ´©ÇÁ °æµµ¸¦ ÃøÁ¤ÇÑ °á°ú, ´ÙÀ½°ú °°Àº °á·ÐÀ» ¾ò¾ú´Ù.

1. ´©ÇÁ °æµµ´Â Speotrum ±º¿¡¼­ 70.4·Î °¡Àå ³ô°í Heliomolar ±º¿¡¼­ 19.8·Î °¡Àå ³·Àº °ªÀ» º¸¿´À¸¸ç, Tukey ´ÙÁß¹üÀ§°ËÁõ¹ý¿¡ ÀÇÇؼ­ °¢ ±º »çÀÌÀÇ Åë°èÀû À¯ÀǼºÀ» °ËÁßÇÑ °á°ú, Spectrum±º, Z100±º ¹× Clearfil AP-X±ºÀ» Á¦¿ÜÇÑ ³ª¸ÓÁö ¸ðµç ±ºµé »çÀÌ¿¡¼­ »óÈ£°£¿¡ Åë°èÇÐÀûÀ¸·Î À¯ÀÇÇÑ Â÷À̸¦ º¸¿´´Ù(p<0.05).

2. ¹ý¶ûÁúÀÇ ³»¸¶¸ð¼ºÀº microfill ÇüÀÎ Heliomolar ±º°ú ´ëÇÕÇÏ´Â °æ¿ì¿¡ °¡Àå ³ô°Ô ³ªÅ¸³µÀ¸¸ç, ±¸Ä¡ºÎ¿ë¿¡¼­´Â ±¸»óÀÇ zirconia silica ¹Ì¼¼ ÀÔÀÚ¸¦ º¹ÇÕÈ­ÇÑ micro hybrid ÇüÀÇ Palpique ±º¿¡¼­ °¡Àå ³ô°Ô ³ªÅ¸³µ´Ù.

3. º¹ÇÕ·¹ÁøÀÇ ¿¬¸¶¼º ¸¶¸ð¿¡ ´ëÇÑ ÀúÇ×¼ºÀº ÇÊ·¯ÀÇ Æò±Õ ÀÔ°æÀÌ ÀÛ°í ¹Ì¼¼ ÇÊ·¯¸¦ °í¹Ðµµ·Î ºÐ»ê½ÃÄÑ º¹ÇÕÈ­ÇÑ hybridÇü º¹ÇÕ·¹Áø¿¡¼­ ³ô°Ô ³ªÅ¸³ª´Â °æÇâÀ» º¸¿´´Ù.

4. ÁÖ»çÀüÀÚÇö¹Ì°æ °üÂû °á°ú, ¸¶¸ð¸é¿¡¼­´Â ÇÊ·¯ÀÇ µ¹Ãâ, ¸¶¸ê°ú Å»¶ô ¹× ±âÁú·¹ÁøÀÇ ¹Ì¼¼ ±Õ¿­ ÁøÀü°ú Ç¥¸éÃþÀÇ ¹Ú¸® µîÀÌ °üÂûµÇ¾ú´Ù.

This study was perfsrmed to evaluate wear characteristics of light-cured composites when opposed by human enamel. Seven light-cured restorative composites were selected and enamel cusps sectioned from premolars. All samples were stored in distilled water at 37¡É for 10 days 68.6 N of weight was loaded during the teat. The measurements of vertical loss of enamel cusps, weight loss and volume loss of composites, and SEM observations of the polished and abraded surfaces were made after 30,000 cycles.

The results obtained were summarized as follows;

1. The highest hardness vague of 70.4 was observed in the Spectrum group and the lowest value of 19.8 was observed in the Heliomolar group. Results of Tukey test showed that an overall significant difference was indicated except the Spectrum, Z10O and Clearfil AP-X groups(p<0.05).

2. Enamel showed the good abrasion resistance against the Heliomolar group of microfilled composite and the Palplque Toughwell group containing the submicron hybrid type spherical fillers.

3. The abrasive wear resistance of hybrid composites was improved with the decrease of mean particle size and hybrid of submicron particle filler.

4. SEM observation of worn surfaces revealed the protrusion, attrition and missing of fillers, clacks developing and delamination in the matrix.

Å°¿öµå

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Wear characteristics;Composite Resin;Knoop hardness

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