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Comparative study of volumetric change in water-stored and dry-stored complete denture base

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±èÁø¼±, ÀÌ¿µÈÄ, È«¼ºÁø, ¹éÀåÇö, ³ë°üÅÂ, ¹è¾Æ¶õ, ±èÇü¼·, ±Ç±à·Ï,
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±èÁø¼± ( Kim Jin-Seon ) - Kyung Hee University School of Dentistry Department of Prosthodontics
ÀÌ¿µÈÄ ( Lee Young-Hoo ) - Kyung Hee University School of Dentistry Department of Prosthodontics
È«¼ºÁø ( Hong Seoung-Jin ) - Kyung Hee University School of Dentistry Department of Prosthodontics
¹éÀåÇö ( Paek Jang-Hyun ) - Kyung Hee University School of Dentistry Department of Prosthodontics
³ë°üÅ ( Noh Kwan-Tae ) - Kyung Hee University School of Dentistry Department of Prosthodontics
¹è¾Æ¶õ ( Pae Ah-Ran ) - Kyung Hee University School of Dentistry Department of Prosthodontics
±èÇü¼· ( Kim Hyeong-Seob ) - Kyung Hee University School of Dentistry Department of Prosthodontics
±Ç±à·Ï ( Kwon Kung-Rock ) - Kyung Hee University School of Dentistry Department of Prosthodontics

Abstract

¸ñÀû: ÀϹÝÀûÀ¸·Î ÃÑÀÇÄ¡´Â ȯÀÚÀÇ ±¸³»¿¡¼­ Á¦°Å ½Ã ¹°¿¡ ´ã°¡ º¸°üÇϵµ·Ï ¼³¸íÇϴµ¥, ¼öÁß¿¡¼­ÀÇ ÃÑÀÇÄ¡ÀÇ º¸°üÀÌ »ó¿ÂÀÇ °ø±âÁß¿¡¼­ ÃÑÀÇÄ¡¸¦ º¸°üÇÏ´Â °Í°ú ºñ±³ÇØ Ã¼Àû ¾ÈÁ¤¼º¿¡ ÀåÁ¡ÀÌ ÀÖ´ÂÁö¿¡ ´ëÇÑ ¿¬±¸´Â ºÎÁ·ÇÏ´Ù. º» ¿¬±¸´Â ÀÇÄ¡ÀÇ ¿Ã¹Ù¸¥ º¸°ü ¹æ¹ýÀ» ±ÔÁ¤ÇÏ´Â µ¥¿¡ Âü°í°¡ µÉ ¼ö ÀÖµµ·Ï, ¼öÁß¿¡¼­ º¸°üÇÏ´Â °æ¿ì¿Í °ø±âÁß¿¡ º¸°üÇÏ´Â °æ¿ì¿¡ ÀÇÄ¡»óÀÇ Ã¼Àû º¯È­·®°ú ¾ç»óÀ» Æò°¡ÇÏ´Â °ÍÀ» ¸ñÀûÀ¸·Î ÇÑ´Ù.

Àç·á ¹× ¹æ¹ý: ÃÊ°æ¼®°í·Î Á¦ÀÛÇÑ ÁÖ¸ðÇüÀ» µðÁöÅÐ ½ºÄµÇÏ¿©, computer-aided design (CAD) ¼ÒÇÁÆ®¿þ¾î¸¦ ÀÌ¿ëÇØ ÃÑÀÇÄ¡ ÀÇÄ¡»óÀ» µðÀÚÀÎÇÏ°í, 3D printing ±â¹ýÀ» ÀÌ¿ëÇÏ¿© »ó¾Ç°ú ÇÏ¾Ç °¢ 6°³ÀÇ ½ÃÆíÀ» Á¦ÀÛÇÏ¿´´Ù. À̸¦ ¸Å¸ôÇÑ ÈÄ ¿­ÁßÇÕ ¹æ½ÄÀ¸·Î ¿Â¼ºÇÏ¿© Á¦ÀÛÇÑ ·¹ÁøÀÇÄ¡»óÀ» »ó¾Ç°ú ÇÏ¾Ç °¢ 3°³¾¿ ±×·ì A¿Í ±×·ì B·Î ³ª´©¾ú´Ù. ±×·ì A´Â »ó¿ÂÀÇ °ø±âÁß¿¡¼­ º¸°üµÇ¾ú°í, ±×·ì B´Â »ó¿ÂÀÇ ¹°¿¡ ´ã°¡ º¸°üÇϸç 24½Ã°£ °£°ÝÀ¸·Î 28ÀÏ µ¿¾È ½ºÄµÇÏ¿© stereolithogrphy (SLA) ÆÄÀÏ·Î ÀúÀåÇÏ¿´´Ù. À̸¦ ºÐ¼®ÇÏ¿© ÇÑ´Þ °£ÀÇ Ã¼Àûº¯È­¸¦ ÃøÁ¤ÇÏ¿´°í, best-fit ¾Ë°í¸®ÁòÀ» ÀÌ¿ëÇÏ¿© Áßø½ÃÄÑ 3Â÷¿ø ºñ±³ Ä÷¯¸ÊÀ» ÀÌ¿ëÇÏ¿© ÀÇÄ¡»ó Àλó¸éÀÇ º¯È­ ¾ç»óÀ» °üÂûÇÏ¿´´Ù. ÃøÁ¤ÇÑ °ªÀº Kruskal-Wallis test¸¦ ÀÌ¿ëÇÏ¿© ºÐ¼®ÇÏ¿´´Ù.

°á°ú: º¸°ü¹æ¹ý¿¡ »ó°ü¾øÀÌ ÃÑ Ã¼Àû¿¡´Â À¯ÀÇÇÑ º¯È­°¡ ¾ø¾úÀ¸³ª, °ø±â Áß¿¡¼­ º¸°üÇÑ ÀÇÄ¡»óÀÇ °æ¿ì »ó¾Ç ±¸°³ºÎ¿Í ÇÏ¾Ç ±¸Ä¡ºÎ ¼³Ãø º¯¿¬¿¡¼­ Á¶Á÷°ú ¸Ö¾îÁö´Â ¹æÇâÀ¸·Î, »ó¾Ç °áÀýºÎ¿Í ÇÏ¾Ç Èı¸Ä¡ »ï°¢ À¶±â ºÎÀ§¿¡¼­´Â Á¶Á÷À» ¾Ð¹ÚÇÏ´Â ¹æÇâÀ¸·Î Åë°èÀûÀ¸·Î À¯ÀÇÇÑ º¯È­¸¦ º¸¿´´Ù.

°á·Ð: ¼öÁß¿¡¼­ÀÇ ÀÇÄ¡ º¸°üÀº °ø±âÁß¿¡¼­ÀÇ ÀÇÄ¡ º¸°ü¿¡ ºñÇØ ÀÇÄ¡»ó Àλó¸éÀÇ º¯È­°¡ Àû°Ô ³ªÅ¸³µ´Ù.

Purpose: Generally, patients are noticed to store denture in water when removed from the mouth. However, few studies have reported the advantage of volumetric change in underwater storage over dry storage. To be a reference in defining the proper denture storage method, this study aims to evaluate the volumetric change and dimensional deformation in case of underwater and dry storage.

Materials and methods: Definitive casts were scanned by a model scanner, and denture bases were designed with computer-aided design (CAD) software. Twelve denture bases (upper 6, lower 6) were printed with 3D printer. Printed denture bases were invested and flasked with heat-curing method. 6 upper and 6 lower dentures were divided into group A and B, and each group contains 3 upper and 3 lower dentures. Group A was stored dry at room temperature, group B was stored underwater. Group B was scanned at every 24 hours for 28 days and scanned data was saved as stereolithography (SLA) file. These SLA files were analyzed to measure the difference in volumetric change of a month and Kruskal-Wallis test were used for statistical analysis. Best-fit algorithm was used to overlap and 3-dimensional color-coded map was used to observe the changing pattern of impression surface.

Results: No significant difference was found in volumetric changes regardless of the storage methods. In dry-stored denture base, significant changes were found in the palate of upper jaw and posterior lingual border of lower jaw in direction away from the underlying tissue, maxillary tuberosity of upper jaw and retromolar pad area of lower jaw in direction towards the underlying tissue.

Conclusion: Storing the denture underwater shows less volumetric change of impression surface than storing in the dry air.

Å°¿öµå

Computer-Aided Design; Denture base; Polymethyl Methacrylate

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