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Morphological Assessment of Proximal Restoration Depending on Different Matrix Systems in Primary Molars with a 3D Scanner: In Vitro Studies

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½ÅÇý¿ø, À̳­¿µ, ¼ÛÁÖÇå, ±èÁؼº, Áö¸í°ü,
¼Ò¼Ó »ó¼¼Á¤º¸
½ÅÇý¿ø ( Shin Hye-Won ) - 
À̳­¿µ ( Lee Nan-Young ) - 
¼ÛÁÖÇå ( Song Joo-Hun ) - Á¶¼±´ëÇб³ Ä¡°ú´ëÇÐ Ä¡°úº¸Ã¶Çб³½Ç
±èÁؼº ( Kim Joon-Seong ) - 
Áö¸í°ü ( Jih Myeong-Kwan ) - 

Abstract

ÀÌ ¿¬±¸ÀÇ ¸ñÀûÀº À¯±¸Ä¡¸¦ ÀçÇöÇÑ ÀΰøÄ¡¸¦ ´ë»óÀ¸·Î ÀÎÁ¢¸é º¹ÇÕ·¹Áø ¼öº¹ ½Ã ¸ÅÆ®¸¯½º ½Ã½ºÅÛ¿¡ µû¸¥ ÀÎÁ¢¸éÀÇ ¿ÜÇü, Á¢Ã˸éÀÇ Å©±â ¹× ¼öº¹ Àü°ú ÈÄÀÇ ºÎÇÇ Â÷À̸¦ ºñ±³ÇØ º¸´Â °ÍÀÌ´Ù. ³× °¡Áö Á¾·ùÀÇ ÀΰøÄ¡¿¡ Circumferential ¸ÅÆ®¸¯½º ½Ã½ºÅÛ¿¡ ÇØ´çÇÏ´Â Tofflemire Matrix System°ú Sectional ¸ÅÆ®¸¯½º ½Ã½ºÅÛ¿¡ ÇØ´çÇÏ´Â Palodent V3 Sectional Matrix System, myJunior Kit¸¦ ÀÌ¿ëÇÏ¿© º¹ÇÕ·¹ÁøÀ» ¼öº¹ÇÏ°í 3D ¸ðµ¨¸µ °úÁ¤À» °ÅÃÄ ºÐ¼®µÇ¾ú´Ù. Sectional ¸ÅÆ®¸¯½º ½Ã½ºÅÛÀ» »ç¿ëÇÑ °æ¿ì¿¡¼­ ¿À¸ñÇÑ ÀÎÁ¢¸é ¿ÜÇüÀÌ Çü¼ºµÉ È®·üÀÌ ³ô¾ÒÀ¸¸ç ´õ Å« Á¢ÃË ¸éÀû°ú ºÎÇÇ°¡ Çü¼ºµÇ¾ú´Ù. ÀÌ´Â Sectional ¸ÅÆ®¸¯½º ½Ã½ºÅÛ¿¡ »ç¿ëµÇ´Â ¸ÅÆ®¸¯½º ¹êµåÀÇ ¿ÏÀü ¿¬Áú(Dead soft) Ư¼º¿¡ ÀÇÇÑ º¯ÇüÀ¸·Î ÀÎÇØ Á¢ÃËÁ¡ ÁÖº¯À¸·Î °ú·®ÀÇ ·¹ÁøÀÌ Àû¿ëµÉ ¼ö Àֱ⠶§¹®ÀÌ´Ù. °Ô´Ù°¡ Sectional ¸ÅÆ®¸¯½º ½Ã½ºÅÛ¿¡ Æ÷ÇÔµÈ °í¹« ¿þÁö°¡ ¸ÅÆ®¸¯½º ¹êµå¸¦ ¿Íµ¿¿¡ Àß ÀûÇÕ ½ÃÅ°Áö ¸øÇÒ °¡´É¼ºÀÌ ÀÖ´Ù. µû¶ó¼­ À̹ø ¿¬±¸ÀÇ °á°ú¸¦ ¹ÙÅÁÀ¸·Î À¯±¸Ä¡ ÀÎÁ¢¸éÀ» Sectional ¸ÅÆ®¸¯½º ½Ã½ºÅÛÀ» ÀÌ¿ëÇØ º¹ÇÕ·¹Áø ¼öº¹ÇÏ´Â °æ¿ì, ÇüÅÂÇÐÀû °üÁ¡À» °í·ÁÇÑ ½ÅÁßÇÑ »ç¿ëÀÌ ¿ä±¸µÈ´Ù.

The purpose of this study was to compare the proximal surface contour, size of contact area, and volume difference before and after restoration in artificial teeth of primary molars during proximal composite resin restoration using different matrix systems. Four types of artificial teeth were restored with composite resin using sectional matrix systems-Palodent V3 Sectional Matrix System and myJunior Kitand a circumferential matrix system-Tofflemire Matrix System-and modeled threedimensionally for analysis. When sectional matrix systems were used, there was a higher probability of concave proximal surface contour and simultaneously greater contact area and volume. This is attributed to the dead soft properties of the matrix band used in sectional matrix systems, which can lead to deformation of the band and hence an excessive amount of resin applied around the contact point. Additionally, the rubber wedge in the sectional matrix system may not help the matrix band fit into the cavity. Therefore, based on the findings of this study, morphological aspects need to be carefully considered for proximal composite resin restoration of primary molars using sectional matrix systems.

Å°¿öµå

Circumferential matrix system; Sectional matrix system; Proximal surface contour; Contact area; Volume difference

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