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Effect of interproximal undercut on the dimensional accuracy of impression

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ÀÌÁÖ¸® ( Lee Ju-Ri ) - ¼º±Õ°ü´ëÇб³ ÀÇ°ú´ëÇÐ Ä¡°úÇб³½Ç
±è¼®±Ô ( Kim Seok-Gyu ) - ¼º±Õ°ü´ëÇб³ ÀÇ°ú´ëÇÐ Ä¡°úÇб³½Ç

Abstract

¸ñÀû: º» ¿¬±¸ÀÇ ¸ñÀûÀº Ä¡°£ À¯µÎÀÇ ¼Ò½Ç·Î ÀÎÇØ Ä¡¾Æ »çÀÌ¿¡ ¾ð´õÄÆÀÌ Á¸ÀçÇÏ´Â °æ¿ì ÀÌ°ÍÀÌ ÀλóüÀÇ Á¤È®µµ¿¡ ¿µÇâÀ» ¹ÌÄ¡´ÂÁö ¾Ë¾Æº¸°íÀÚ ÇÏ´Â °ÍÀÌ´Ù.

Àç·á ¹× ¹æ¹ý: 2Á¾·ùÀÇ ºÎ°¡ÁßÇÕÇü ½Ç¸®ÄÜ ÀλóÀç(Extrude??Wash, ImprintTM II Quick Step Light Body)¿Í ÇÑ Á¾·ùÀÇ ¾ËÁö³×ÀÌÆ® ÀλóÀç(Cavex Impressional)·Î »ó¾Ç ÁÖ¸ðÇüÀÇ ÀλóÀ» äµæÇÏ¿© ¾òÀº ½ÇÇè¸ðÇü»óÀÇ µÎ Á¡ »çÀÌÀÇ °Å¸®¸¦ ÃøÁ¤ÇÏ¿© ÁÖ¸ðÇü°ú ºñ±³ÇÏ¿© ¸ðÇüÀÇ º¯Çü Á¤µµ¸¦ ÃøÁ¤ÇÏ¿´´Ù. ¼¼ Á¾·ùÀÇ ÀλóÀç¿¡¼­ ¾òÀº ½ÇÇè ¸ðÇüµéÀ» Ä¡°£ À¯µÎ°¡ Á¸ÀçÇÏ´Â ±º°ú Á¸ÀçÇÏÁö ¾Ê´Â ±ºÀ¸·Î ³ª´² ÃÑ 6°³ÀÇ ±ºÀ» Æò°¡ÇÏ¿´À¸¸ç, °¢ ±º´ç 6°³ÀÇ ¸ðÇüÀ» ÃøÁ¤ÇÏ¿´´Ù. »ïÂ÷¿ø ±¤ÇÐ ½ºÄ³³Ê·Î ½ÇÇè¸ðÇüÀ» ½ºÄµÇÑ ÈÄ, ÇϳªÀÇ ¸ðÇü´ç 6°³ÀÇ µÎ Á¡ »çÀÌÀÇ °Å¸®¸¦ »ïÂ÷¿ø µðÁöÅÐ °èÃø ¼ÒÇÁÆ®¿þ¾î »ó¿¡¼­ ÃøÁ¤ÇÏ¿´´Ù. ÃøÁ¤ °Å¸®ÀÇ º¯È­ Á¤µµ¸¦ ¹éºÐÀ²·Î °è»êÇÏ¿© ¸ðÇüÀÇ º¯Çü·üÀ» ±¸ÇÏ¿´À¸¸ç, ÀÌ°ÍÀ» ÀÌ¿øºÐ»êºÐ¼®À» ÀÌ¿ëÇÏ¿© À¯ÀǼöÁØ .05¿¡¼­ ºÐ¼®ÇÏ¿´´Ù.

°á°ú: ÃøÁ¤°Å¸® 6°³ Áß 3°³¿¡¼­ ÀλóÀç¿¡ µû¶ó Åë°èÀûÀ¸·Î À¯ÀÇÇÑ Â÷À̸¦ º¸¿´´Ù. ¹Ý¸é, Ä¡°£ À¯µÎÀÇ Á¸Àç ¿©ºÎ¿¡ µû¸¥ Â÷ÀÌ´Â ¾ËÁö³×ÀÌÆ® ÀλóÀç¿¡¼­ ÇϳªÀÇ ÃøÁ¤ °Å¸®¿¡¼­¸¸ À¯ÀÇÇÑ Â÷À̸¦ º¸¿´À» »Ó(P=.047), ´Ù¸¥ ÃøÁ¤°Å¸®µé°ú ÀλóÀç¿¡¼­´Â Åë°èÀûÀ¸·Î À¯ÀǼº ÀÖ´Â Â÷À̸¦ ³ªÅ¸³»Áö ¾Ê¾Ò´Ù.

°á·Ð: Ä¡°£ À¯µÎÀÇ ¼Ò½Ç·Î ÀÎÇÑ ¾ð´õÄÆÀÇ Á¸Àç°¡ ºÎ°¡ÁßÇÕÇü ½Ç¸®ÄÜ ÀλóÀç¿Í ¾ËÁö³×ÀÌÆ® ÀλóÀçÀÇ Ã¼Àû Á¤È®µµ¿¡ ¹ÌÄ¡´Â ¿µÇâÀº Å©Áö ¾Ê¾Ò´Ù.

Purpose: This study evaluated the effect of loss of interproximal papilla, creating an undercut, on the accuracy of impression materials.

Materials and methods: Two addition type silicone impression materials (Extrude Wash, Imprint(TM) II Quick Step Light Body) and one alginate impression material (Cavex Impressional) were used to make impressions of a maxillary master model simulating clinical conditions with or without interproximal papilla. Stone was poured in the impressions and working casts were fabricated. A total of 6 groups with 6 working casts in each group were scanned using 3-dimensional optical scanner. The accuracy of the impressions was assessed by measuring the dimensional changes (¥ÄI (%)) of 6 distances on working casts compared to a master model with a 3-dimensional digitizing and inspection software. The data were analyzed by two-way ANOVA (P<.05).

Results: Three of 6 distances showed statistically significant differences among the impression materials. Only 1 of 6 distances in alginate impression showed a statistically significant difference between casts with and without interproximal papilla (P=.047).

Conclusion: The presence of undercut due to loss of interproximal papilla did not significantly influence the dimensional accuracy of addition type silicone and alginate impression materials.

Å°¿öµå

Ä¡°úÀλóÀç ¾ËÁö³×ÀÌÆ® ÀλóÀç ½Ç¸®ÄÜ Åº¼ºÀλóÀç
Dental impression materials; Alginates; Silicone elastomers

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KCI
KoreaMed