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Changes of the surface roughness depending on immersion time and powder/liquid ratio of various tissue conditioners

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±è°æ¼ö ( Kim Kyung-Soo ) - ¿¬¼¼´ëÇб³ Ä¡°ú´ëÇÐ º¸Ã¶°úÇб³½Ç
¹®È«¼® ( Moon Hong-Seok ) - ¿¬¼¼´ëÇб³ Ä¡°ú´ëÇÐ Ä¡°úº¸Ã¶Çб³½Ç
½ÉÁؼº ( Shim June-Sung ) - ¿¬¼¼´ëÇб³ Ä¡°ú´ëÇÐ Ä¡°úº¸Ã¶Çб³½Ç
Á¤¹®±Ô ( Jeong Mun-Gyu ) - ¿¬¼¼´ëÇб³ Ä¡°ú´ëÇÐ Ä¡°úº¸Ã¶Çб³½Ç

Abstract

¿¬±¸¸ñÀû: 1961³â Chase¿¡ ÀÇÇØ Ã³À½ ¼Ò°³µÈ ±â´É Àλó¹ý (functional impression technique)Àº ±âÁ¸ ÀÇÄ¡¿¡ ÀÌÀåµÈ Á¶Á÷ ¾çÈ­Àç (tissue conditioner)¸¦ ÀÌ¿ëÇÏ¿© ½ÇÁ¦±â´É ¿îµ¿ ÇÏ¿¡¼­ µ¿ÀûÀÎ ÁöÁö Á¶Á÷ÀÇ Àλó°ú ±â´ÉÀûÀÌ¸ç »ý¸®ÀûÀÎ ÀÇÄ¡ º¯¿¬ºÎÀÇ ÇüÅÂ¿Í ±æÀ̸¦ ±â·ÏÇÏ´Â ¼ú½ÄÀÌ´Ù. Á¶Á÷ ¾çÈ­Àç°¡ ±â´É Àλó¹ýÀÇ Àç·á·Î »ç¿ëµÇ±â À§Çؼ­´Â üÀû ¾ÈÁ¤¼º, ¹Ì¼¼ºÎ ÀçÇö¼º, È帧¼º µîÀÇ Æ¯¼º°ú ÇÔ²² Ä¡°ú¿ë ¼®°í¿ÍÀÇ ÀûÇÕ¼º (compatibility)À» °í·ÁÇÏ¿©¾ß ÇÑ´Ù. ÇÏÁö¸¸ ±â´É Àλó¹ý Àç·á·Î Á¶Á÷ ¾çÈ­À縦 »ç¿ëÇÒ °æ¿ì ±¸°­³» ȯ°æ ¼Ó¿¡¼­ ½Ã°£ÀÌ Áö³²¿¡ µû¶ó ¼®°í Ç¥¸é °ÅÄ¥±â¿¡´Â ¾î¶°ÇÑ ¿µÇâÀ» ¹ÌÄ¥Áö ¶ÇÇÑ ±×¿¡ µû¶ó ¼®°í Ç¥¸éÀÇ º¯È­¸¦ °í·ÁÇÏ¿© ¾î´À Á¤µµ ±â°£ µ¿¾È ±¸°­ ³»¿¡ À¯ÁöÇÏ´Â °ÍÀÌ ÁÁÀ»Áö¿¡ ´ëÇÑ ¿¬±¸´Â °ÅÀÇ ¾ø´Â »óȲÀÌ´Ù. ÀÌ¿¡ º» ¿¬±¸´Â Á¶Á÷ ¾çÈ­À縦 ±â´É Àλó¹ýÀÇ Àç·á·Î¼­ »ç¿ëÇÒ °æ¿ì, Á¶Á÷ ¾çÈ­ÀçÀÇ Á¾·ù¿Í ºÐ¾×ºñ, ħ¼ö½Ã°£ÀÌ Ä¡°ú¿ë ¼®°í Ç¥¸é °ÅÄ¥±â¿¡ ¾î¶°ÇÑ ¿µÇâÀ» ÁÖ´ÂÁö ¾Ë¾Æº¸°íÀÚ ÇÏ¿´´Ù.

¿¬±¸Àç·á ¹× ¹æ¹ý: ÀÓ»óÀûÀ¸·Î ¸¹ÀÌ ¾²ÀÌ´Â 3Á¾ÀÇ Á¶Á÷ ¾çÈ­Àç (Coe-Comfort, Visco-Gel, Soft-Liner)·Î Á¦Á¶»ç¿¡¼­ ÃßõÇÏ´Â ºÐ¾×ºñ (P/L ratio)¸¦ ±âÁØÀ¸·Î Ç¥Áغо׺ñ¿¡ µû¶ó È¥ÇÕÇÑ ±º (R), ºÐ¸»ÀÇ ¾çÀ» 20% ¸¹ÀÌ È¥ÇÕÇÑ ±º (M), ºÐ¸»ÀÇ ¾çÀ» 20% Àû°Ô È¥ÇÕÇÑ ±º (L)À¸·Î ³ª´©¾î Á¶Á÷ ¾çÈ­À縦 È¥ÇÕÇÏ¿© Á÷°æ 20 mm, µÎ²² 2 mmÀÇ ½ÃÆíÀ» Á¦ÀÛÇÏ¿´´Ù. °¢ Á¶Á÷ ¾çÈ­Àç ½ÃÆíµéÀ» ´Ù½Ã Àΰø Ÿ¾× ¼ÓÀÇ Ä§¼ö½Ã°£ (0½Ã°£, 1ÀÏ, 3ÀÏ, 5ÀÏ, 7ÀÏ)¿¡ µû¶ó 5°³ÀÇ ±ºÀ¸·Î ³ª´« µÚ Àΰø Ÿ¾×¿¡ ¿ÏÀüÈ÷ ´ã±¸¾î 37¡É¿¡¼­ º¸°üÇÏ¿´´Ù. Á¤ÇØÁø ħ¼ö½Ã°£ÀÌ °æ°úÇÑ ½ÃÆíÀ» ²¨³»¼­ ÃÊ°æ¼®°í¸¦ ºÎ¾î ¼®°í ½ÃÆíÀ» Á¦ÀÛÇÑ µÚ Á¶Á÷ ¾çÈ­Àç¿Í Á¢ÇØÀÖ´ø ¼®°í ½ÃÆí Ç¥¸éÀÇ °ÅÄ¥±â¸¦ Á¢ÃË½Ä Ç¥¸é Á¶µµ±â (Surfcoder SEF-30D, Kosaka laboratory Ltd., Tokyo, Japan)·Î ÃøÁ¤ÇÏ¿© ´ÙÀ½°ú °°Àº ¿¬±¸ °á°ú¸¦ ¾ò¾ú´Ù.

°á°ú ¹× °á·Ð: 1. Á¶Á÷ ¾çÈ­Àç·Î ºÎÅÍ ¸¸µé¾îÁø ¼®°í ¸ðÇüÀÇ Ç¥¸é °ÅÄ¥±â¿¡ ÁÖµÈ ¿µÇâÀ» ¹ÌÄ¡´Â ¿äÀÎÀº ±â´É ÀλóÀ» äµæÇϱâ À§ÇØ ±¸°­ ³»¿¡ Á¶Á÷ ¾çÈ­À縦 À§Ä¡½ÃÅ°´Â ±â°£À̾ú°í, ±× ¿Ü¿¡ Á¶Á÷ ¾çÈ­ÀçÀÇ Á¾·ù¿Í ºÐ¾×ºñµµ Åë°èÇÐÀûÀ¸·Î À¯ÀÇÇÑ ¿µÇâÀ» ¹ÌÄ¡´Â ¿äÀÎÀ̾ú´Ù. 2. 3°¡Áö P/L ratio ½ÇÇè Á¶°Ç ¸ðµÎ¿¡¼­ Visco-Gel°ú Soft-Liner °£¿¡´Â ¼®°í ¸ðÇüÀÇ Ç¥¸é °ÅÄ¥±â°ªÀÌ Ä§¼ö½Ã°£ÀÌ º¯ÇÔ¿¡ µû¶ó Åë°èÇÐÀûÀ¸·Î À¯ÀǼº ÀÖ´Â Â÷À̸¦ º¸ÀÌÁö ¾Ê¾ÒÁö¸¸, Coe-ComfortÀÇ °æ¿ì¿¡´Â ħ¼ö½Ã°£ÀÌ º¯ÇÔ¿¡ µû¶ó Soft-Liner¿Í Visco-Gelº¸´Ù ¼®°í ¸ðÇüÀÇ Ç¥¸é °ÅÄ¥±â°ªÀÌ Åë°èÇÐÀûÀ¸·Î À¯ÀǼº ÀÖ°Ô ´õ Å« °ªÀ» º¸¿´´Ù. 3. 3Á¾ÀÇ ½ÇÇè ´ë»ó Á¶Á÷ ¾çÈ­Àç ¸ðµÎ¿¡¼­ R (recommended)¿Í M (more) group °£¿¡´Â ¼®°í ¸ðÇüÀÇ Ç¥¸é °ÅÄ¥±â°ªÀÌ Ä§¼ö½Ã°£ÀÌ º¯ÇÔ¿¡ µû¶ó Åë°èÇÐÀûÀ¸·Î À¯
ÀǼº ÀÖ´Â Â÷À̸¦ º¸ÀÌÁö ¾Ê¾ÒÁö¸¸, L (less) groupÀÇ °æ¿ì¿¡´Â ħ¼ö½Ã°£ÀÌ º¯ÇÔ¿¡ µû¶ó R°ú M groupº¸´Ù ¼®°í ¸ðÇüÀÇ Ç¥¸é °ÅÄ¥±â°ªÀÌ Åë°èÇÐÀûÀ¸·Î À¯ÀÇ ¼ºÀÖ°Ô´õÅ«°ªÀ»º¸¿´´Ù. ÀÌ·¯ÇÑ ¿¬±¸ °á°ú·ÎºÎÅÍ ¼®°í ¸ðÇüÀÇ Ç¥¸é °ÅÄ¥±â¿¡´Â ±¸°­ ³»¿¡¼­ÀÇ ½Ã°£ÀÌ °¡Àå Å« ¿µÇâÀ» ³ªÅ¸³»¸ç, Á¶Á÷ ¾çÈ­ÀçÀÇ Á¾·ù¿Í ºÐ¾×ºñµµ ¿µÇâÀ» ¹ÌÄ¥ ¼ö Àֱ⶧¹®¿¡ ¼úÀÚ°¡ ±â´É Àλó äµæ ½Ã¿¡ ÀûÀýÇÑ ±¸°­ ³» Àû¿ë½Ã°£¿¡ ´ëÇؼ­ Àß ÀÌÇØÇÏ°í ÀÖ°í, ±â´É ÀÎ»ó¿¡ ÀûÇÕÇÑ Á¶Á÷ ¾çÈ­À縦 ¼±º°ÇÒ ¼ö ÀÖ´Ù¸é Á¶Á÷ ¾çÈ­À縦 ÀÌ¿ëÇÏ¿© À¯¿ëÇÏ°Ô ±â´É ÀλóÀ» äµæÇÒ ¼ö ÀÖÀ» °ÍÀÌ´Ù

Statement of Problem: Volume stability, microstructure reproducibility and fluidity along with compatibility with dental stone must be in consideration in order to use tissue conditioner as a material for functional impression. There are few studies concerning the influence of time factor in oral condition on surface roughness of the stone and optimal
retention period in the oral cavity considering such changes in surface roughness.

Purpose: The purpose of this study was to find out the influence of various kinds of tissue conditioner, its powder/liquid ratio and immersion time on surface roughness of the stone.

Material and Methods: Materials used in this study were the three kinds of tissue conditioners (Coe-Comfort, Visco-Gel, Soft-Liner) and were grouped into three: group R - mixed with standard powder/liquid ratio that was recommended by the manufacturers, group M - mixed with 20% more powder, group L - mixed with 20% less powder. Specimens were made with the size of 20 mm diameter and 2 mm width. Each tissue conditioner specimens were subdivided into 5 groups according to the immersion time (0 hour, 1 day, 3 days, 5 days, 7 days), completely immersed into artificial saliva and were stored under 37¡É. Specimens of which the given immersion time elapsed were taken out and were poured with improved stone, making the stone specimens. Surface roughness of the stone specimens was measured by a profilometer.

Results: Within the limitation of this study, the following results were drawn. 1. Major influencing factor on surface roughness of the stone model made from tissue conditioner was the retention period (contribution ratio (¥ñ) = 62.86%, P < .05) of the tissue conditioner in oral cavity to make functional impression. 2. In case of Coe-Comfort, higher mean surface roughness value of the stone model with statistical significance was observed compared to that of Soft-Liner and
Visco-Gel as immersion time changes (P < .05). 3. In case of group L (less), higher mean surface roughness value of the stone model with statistical significance was observed compared to that of R (recommended) and M (more) group as immersion time changes (P < .05).

Conclusion: We may conclude that as the retention period of time in oral cavity influences surface roughness of the stone model the most and as the kind of tissue conditioner and its P/L ratio may influence also, clinician should well understand the optimal retention period in oral cavity and choose the right tissue conditioner for the functional impression, thus making the functional impression with tissue conditioner usefully.

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±â´É Àλó;Á¶Á÷ ¾çÈ­Àç;Ç¥¸é °ÅÄ¥±â;ºÐ¾×ºñ;ħ¼ö½Ã°£
functional impression;tissue conditioner;surface roughness;powder/liquid ratio;immersion time

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