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3Á¾ÀÇ CAD/CAM ½Ã½ºÅÛ¿¡¼­ Áö¸£ÄÚ´Ï¾Æ ÄÚ¾îÀÇ ÆÄÀý °­µµ¿¡ °üÇÑ ºñ±³ ¿¬±¸

Comparative study in fracture strength of zirconia cores fabricated with three different CAD/CAM systems

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½Å¾ð½Ä, ¹Ú¿øÈñ, ÀÌ¿µ¼ö,
¼Ò¼Ó »ó¼¼Á¤º¸
½Å¾ð½Ä ( Shin Eon-Sick ) - ÇѾç´ëÇб³ ÀÇ°ú´ëÇÐ Ä¡°úÇб³½Ç
¹Ú¿øÈñ ( Park Won-Hee ) - ÇѾç´ëÇб³ ÀÇ°ú´ëÇÐ Ä¡°úÇб³½Ç
ÀÌ¿µ¼ö ( Lee Young-Soo ) - ÇѾç´ëÇб³ ÀÇ°ú´ëÇÐ Ä¡°úÇб³½Ç

Abstract

ÃÖ±Ù CAD/CAM ½Ã½ºÅÛÀ» ÀÌ¿ëÇÏ¿© Á¦ÀÛµÈ Áö¸£ÄÚ´Ï¾Æ ÄÚ¾îÀÇ »ç¿ëÀÌ Áõ°¡ÇÏ°í ÀÖ´Ù. ÇÏÁö¸¸ ±¹³» ±â¼ú·ÂÀ» ÀÌ¿ëÇÑ Á¦Ç°¿¡ ´ëÇÑ ¿¬±¸´Â ¾ÆÁ÷ ¹ÌÈíÇÑ ´Ü°èÀÌ´Ù. º» ¿¬±¸ÀÇ ¸ñÀûÀº 3Á¾ÀÇ CAD/CAM ½Ã½ºÅÛ¿¡¼­ ´ÜÀÏ ÀüºÎ µµÀç°üÀ» À§ÇÑ Áö¸£ÄÚ´Ï¾Æ ÄÚ¾îÀÇ ÆÄÀý °­µµ¸¦ ºñ±³Çϴ°ÍÀÌ´Ù. º» ¿¬±¸¸¦ À§ÇØ »ó¾Ç ÁßÀýÄ¡ ºÎÀ§ÀÇ ÀüºÎµµÀç°üÀ» À§ÇÑ 30°³ÀÇ Áö¸£ÄÚ´Ï¾Æ Äھ Á¦ÀÛÇÏ¿´´Ù. °¢ ±ºÀº ´ÙÀ½°ú °°´Ù. 1. Adens CAD/CAM ½Ã½ºÅÛ ±º, 2. Cerasys CAD/CAM ½Ã½ºÅÛ ±º, 3. Lava CAD/CAM ½Ã½ºÅÛ ±º. ¸ðµç ½ÃÆíÀº µÎ²² 0.5mm, relief 40§­·Î ÀÏ°ü¼º ÀÖ°Ô Á¦ÀÛÇÏ¿´´Ù. ½ÃÆíÀº Z250/SN5SÀ» ÀÌ¿ëÇÏ¿© ÆÄÀý °­µµ¸¦ ÃøÁ¤ÇÏ¿´´Ù. °¢ ±ºÀÇ Æò±Õ°ú Ç¥ÁØÆíÂ÷¸¦ ±¸ÇÏ°í, °¢ ±º°£ÀÇ À¯ÀǼºÀ» ¾Ë¾Æº¸±â À§ÇØ Kruskal waillis test¿Í Wilcoxon Rank Sum test¸¦ ½ÃÇàÇÏ¿´´Ù. º» ¿¬±¸ °á°ú, °¢ ±ºÀÇ ÆÄÀý °­µµ´Â Adens ½Ã½ºÅÛÀº 615.89¡¾156.1N, Cerasys ½Ã½ºÅÛÀº 863.98¡¾151.5N, 3M Lava ½Ã½ºÅÛÀº 1143.1¡¾286.6N À̾ú´Ù. °¢ ±ºÀÇ ÆÄÀý °­µµ´Â 3M Lava ½Ã½ºÅÛ, Cerasys ½Ã½ºÅÛ, Adens ½Ã½ºÅÛ ¼øÀ¸·Î Åë°èÇÐÀûÀ¸·Î À¯ÀÇÇÑ ¼öÁØÀÇ Â÷À̸¦ º¸¿´À¸³ª, ¼¼ ±×·ì ¸ðµÎ ÀÓ»óÀûÀ¸·Î »ç¿ë °¡´ÉÇÑ °á°ú¸¦ ³ªÅ¸³Â´Ù. ½ÇÁ¦ ÀÓ»ó¿¡¼­ Àå±â°£ÀÇ »ç¿ë¿¡ ´ëÇÑ ¿¬±¸°¡ ÇÊ¿äÇÒ °ÍÀÌ´Ù.

Purpose: The purpose of this study is to compare three different CAD/CAM systems through the fracture strength of zirconia core and to evaluate the clinical availability of each system.

Material and methods: The following three groups of 30 maxillary mesial incisor core for all-ceramics(each group 10) were fabricated as follows: group 1. Adens CAD/CAM system, group 2. Cerasys CAD/CAM system, group 3. 3M LAVA CAD/CAM system. All specimens were manufactured consistently thickness 0.5mm and relief 40¥ìm. Specimens were subjected to compressive loading on the lingual area by Z250/SN5S. Each group¡¯s mean and standard deviation were calculated and Kruskal Waillis test, Wilcoxon Rank Sum test were utilized to find out the relationship among the groups.

Results: The results were as follows: 1. The mean fracture strength of Adens system was 615.89¡¾156.1N, the Cerasys system was 863.98¡¾151.5N, and the 3M LAVA system was 1143.1¡¾286.6N. 2. The fracture strength of the systems showed the significant statistical differences in order of 3M LAVA system, Cerasys system, Adens system.

Conclusion: In this study, in spite of the differences among the groups, every group showed clinically useful results. It is necessary to study further clinical experiments on a long term basis.

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Áö¸£ÄÚ´Ï¾Æ ÄÚ¾î;ÆÄÀý °­µµ;CAD/CAM ½Ã½ºÅÛ;ÀüºÎ µµÀç°ü
Zirconia core;Fracture strength;CAD/CAM system;All-ceramic crown

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