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Effect of surface sealant on surface roughness of dental composite with different surface roughness

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½Åµ¿¾Æ, Áø¼±ÁÖ, ¹è²Éº°, ȲÀγ²,
¼Ò¼Ó »ó¼¼Á¤º¸
½Åµ¿¾Æ ( Shin Dong-Ah ) - 
Áø¼±ÁÖ ( Jin Seon-Ju ) - 
¹è²Éº° ( Bae Kkot-Byeol ) - 
ȲÀγ² ( Hwang In-Nam ) - 

Abstract

¸ñÀû: º» ¿¬±¸´Â ¼­·Î ´Ù¸¥ ÇÊ·¯¸¦ °¡Áö´Â º¹ÇÕ·¹Áø¿¡¼­ Ç¥¸é ¿¬¸¶ Á¤µµ¿¡ µû¶ó ¼öÁ¾ÀÇ ·¹Áø Ç¥¸é °­È­Á¦(Surface sealant)¸¦ µµÆ÷ÇßÀ» ¶§ º¹ÇÕ·¹ÁøÀÇ °ÅÄ¥±â¿¡ ¹ÌÄ¡´Â ¿µÇâ¿¡ ´ëÇØ ¿¬±¸ÇØ º¸°íÀÚ ÇÑ´Ù.

¿¬±¸ Àç·á ¹× ¹æ¹ý: ¹Ì¼¼ÀÔÀÚÇü º¹ÇÕ·¹Áø(Metafil CX, Sun Medical Co.)°ú È¥ÇÕÇü º¹ÇÕ·¹Áø(Aelite¢â LS posterior, Bisco)À» »ç¿ëÇÏ¿© Á÷°æ 8 mm, ³ôÀÌ 4 mmÀÇ ½ÃÆíÀ» ·¹Áø´ç 60°³¾¿ Á¦ÀÛÇÏ°í, 3°³ ±ºÀ¸·Î ³ª´©¾î ÁÖ¼ö ÇÏ¿¡ 600, 1000, 2000 grit »çÆ÷(Tamiya finishing abrasives, Tamiya Inc.)·Î ¿¬¸¶ÇÏ¿´´Ù. ¿¬¸¶µÈ Ç¥¸éÀÇ Ç¥¸é Á¶µµ(Ra)°ªÀº Surface Roughness Tester (SJ-301, Mytutoyo)¸¦ ÀÌ¿ëÇØ ÃøÁ¤ÇÏ¿´À¸¸ç ¿¬¸¶µÈ °¢ ½ÃÆí¿¡ ·¹Áø Ç¥¸é °­È­Á¦ÀÎ BisCover¢â LV (Bisco), Optiguard¢ç (Kerr), and Seal-n-Shine¢â (Pulpdent)¸¦ °¢°¢ Á¦Á¶»çÀÇ Áö½Ã¿¡ µû¶ó µµÆ÷ÇÏ¿´´Ù. ·¹Áø Ç¥¸é °­È­Á¦ ó¸® Àü°ú ÈÄ¿¡ ½ÃÆíÀÇ Ç¥¸é Á¶µµ¸¦ ÃøÁ¤ÇÏ¿´À¸¸ç ÁÖ»çÀüÀÚÇö¹Ì°æ(JSM-7500, JEOL)°ú ¿øÀÚÇö¹Ì°æ(MultiMode IV, Veeco Instruments)À¸·Î °üÂûÇÏ¿´´Ù.

°á°ú: 600 grit »çÆ÷·Î ¿¬¸¶ÇÑ ÈÄ ·¹Áø Ç¥¸é °­È­Á¦¸¦ ó¸®ÇÑ ±ºÀº µµÆ÷ Àüº¸´Ù ´õ ³·Àº Ç¥¸é Á¶µµ(Ra)°ªÀ» º¸¿´À¸³ª(P < 0.05), 1000, 2000 gritÀ¸·Î ¿¬¸¶ÇÑ ±º¿¡¼­´Â µµÆ÷ Àü ÈÄ °£¿¡ Åë°èÀûÀ¸·Î À¯ÀÇÇÑ Â÷À̸¦ º¸ÀÌÁö ¾Ê¾Ò´Ù. ·¹Áø Ç¥¸é °­È­Á¦ Á¦Ç° °£ ¶Ñ·ÇÇÑ °ÅÄ¥±â Â÷ÀÌ´Â ³ªÅ¸³ªÁö ¾Ê¾Ò´Ù. SEM°ú AFMÀ¸·Î ½ÃÆíÀ» °üÂû ½Ã ¸¶¹«¸®¿Í ¿¬¸¶ ÈÄ ·¹Áø Ç¥¸é¿¡ Çü¼ºµÈ ¹Ì¼¼ÇÑ °áÇÔÀÌ ·¹Áø Ç¥¸é °­È­Á¦¸¦ ó¸®ÇÑ ÈÄ ÇöÀúÈ÷ ÁÙ¾îµå´Â ¾ç»óÀ» º¸¿´´Ù.

°á·Ð: º» ¿¬±¸ °á°ú, ¸¶¹«¸®¿Í ¿¬¸¶ ÈÄ º¹ÇÕ·¹Áø Ç¥¸éÀÌ °ÅÄ£ °æ¿ì¿¡´Â ·¹Áø Ç¥¸é °­È­Á¦ÀÇ µµÆ÷°¡ ¹Ì¼¼ÇÑ °áÇÔÀ» ä¿ö¼­ °ÅÄ¥±â¿¡ ¿µÇâÀ» ÁÙ ¼ö ÀÖÁö¸¸ º¹ÇÕ·¹Áø Ç¥¸éÀÇ ¿¬¸¶ »óÅ°¡ ¿ì¼öÇÑ °æ¿ì ·¹Áø Ç¥¸é °­È­Á¦ÀÇ µµÆ÷°¡ °ÅÄ¥±â¿¡ Å©°Ô ¿µÇâÀ» ÁÖÁö ¾ÊÀ½À» º¸¿©ÁØ´Ù.

Purpose: This study aimed to evaluate the influence of surface sealants on the surface roughness of composite resins.
Materials and Methods: The study used microfilled composite resin (Metafil CX, Sun Medical Co.) and hybrid composite resin (Aelite¢â LS posterior, Bisco). Sixty specimens (8 mm in diameter and 4 mm in height) of each composite resin type were prepared and divided into 3 groups. Each specimen was ground with 600, 1000, and 2000-grit sandpaper. The Surface roughness (Ra) values were measured using a surface roughness tester (SJ-301, Mytutoyo) before and after surface sealant application. Surface sealants, BisCover¢â LV (Bisco), Optiguard¢ç (Kerr), and Seal-n-Shine¢â (Pulpdent), were applied to the specimens, as instructed and observed by scanning electron microscope (JSM-7500, JEOL) and atomic force microscope (MultiMode IV, Veeco Instruments).

Results: Specimens ground with 600-grit sandpaper coated with surface sealants exhibited significantly lower Ra values than the untreated group (P < 0.05). Specimens ground with 1000 and 2000-grit sandpaper showed statistically no difference. There was no significant difference in surface roughness among BisCover¢â LV, Optiguard¢ç, and Seal-n-Shine¢â. SEM and AFM revealed remarkably decreased micro-defects on the surfaces of composite resins after surface sealant application.

Conclusion: Surface sealants can influence surface roughness when applied on the rough surface of composite resins but not on highly polished composite resins.

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º¹ÇÕ·¹Áø; Ç¥¸é °ÅÄ¥±â; Ç¥¸é °­È­Á¦
dental composite; surface roughness; surface sealant

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