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A comparative study on the fracture behavior of zironia, glass infiltrated alumina and PFM full crown system

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ÀÌ»óÇõ ( Lee Sang-Hyeok ) - ¼­¿ï´ëÇб³ Ä¡°ú´ëÇÐ »ýüÀç·á°úÇб³½Ç
¾ÈÁø¼ö ( Ahn Jin-Soo ) - ¼­¿ï´ëÇб³ Ä¡°ú´ëÇÐ »ýüÀç·á°úÇб³½Ç
ÀÓ¹ü¼ø ( Lim Bum-Soon ) - ¼­¿ï´ëÇб³ Ä¡°ú´ëÇÐ »ýüÀç·á°úÇб³½Ç
±è¸íÈ£ ( Kim Myung-Ho ) - ¸Þµ§Æ®¼Ö·ç¼Ç

Abstract

¿¬±¸ ¸ñÀû: º» ¿¬±¸´Â Áö¸£ÄڴϾÆ, À¯¸®Ä§Åõ¾Ë·ç¹Ì³ª ¹× ±Ý¼ÓµµÀç¼ÒºÎ¿ëÄ¡°üÀÇ ÆÄÀý°­µµ¸¦ ºñ±³ÇÏ°íÀÚ ÇÏ¿´´Ù.

¿¬±¸ Àç·á ¹× ¹æ¹ý: Áö¸£ÄڴϾÆ, À¯¸®Ä§Åõ¾Ë·ç¹Ì³ª ¹× ±Ý¼ÓµµÀç¼ÒºÎ¿ëÇÕ±ÝÀ¸·Î °¢°¢ 15°³ÀÇ Ä¡°üÀ» Á¦ÀÛÇÑ ÈÄ, Á¦ÀÛµÈ Ä¡°üÀ» ÀåÃà¿¡ °æ»çÁö°Ô Á¦ÀÛµÈ Áö±×¿¡ ÀåÂøÇÏ¿© ¸¸´É½ÃÇè±â·Î ÆÄÀý°­µµ¸¦ ÃøÁ¤ÇÏ¿´À¸¸ç, Àü´Ü°áÇÕ°­µµ ½ÃÇèÀ» À§ÇÏ¿© Áö¸£ÄڴϾÆ, À¯¸®Ä§Åõ¾Ë·ç¹Ì³ª ¹× ±Ý¼ÓµµÀç¼ÒºÎ¿ëÇÕ±ÝÀ» Å©±â·Î Á¦ÀÛÇÏ°í Æ÷¼¼¸° ºÐ¸»À» Å©±â·Î Ã༺ÇÑ ÈÄ Á¦Á¶»çÀÇ ¼³¸í¼­¿¡ µû¶ó Àü±â·Î(Ceramco 7, Dentsply, USA)¿¡¼­ ¼Ò°áÇÏ¿© ÃÑ10°³ÀÇ ½ÃÆíÀ» Á¦ÀÛÇÏ¿´´Ù.

°á°ú: ÀüºÎ°ü ÇüÅ·ΠÁ¦ÀÛÇÑ ½ÃÆíÀÇ ÆÄÀý°­µµ´Â ±Ý¼Ó-µµÀç ½Ã½ºÅÛÀÌ , ¾Ë·ç¹Ì³ª-µµÀç ½Ã½ºÅÛÀÌ ¹× Áö¸£ÄڴϾÆ-µµÀç ½Ã½ºÅÛÀÌ À¸·Î ÃøÁ¤µÇ¾úÀ¸¸ç, °¢ ½ÇÇ豺°£ À¯ÀÇÇÑ Â÷ÀÌ´Â ¾ø¾ú´Ù(P>.05). Àü´Ü°áÇÕ°­µµ´Â ±Ý¼Ó-µµÀç ½Ã½ºÅÛÀÌ , ¾Ë·ç¹Ì³ª-µµÀç ½Ã½ºÅÛÀÌ , Áö¸£ÄڴϾÆ-µµÀç ½Ã½ºÅÛÀÌ ·Î Áö¸£ÄڴϾÆ-µµÀç ½Ã½ºÅÛÀÌ ´Ù¸¥ µÎ ½Ã½ºÅÛ º¸´Ù À¯ÀÇÇÏ°Ô ³·Àº °ªÀ» º¸¿´´Ù(P<.05). ±Ý¼Ó-µµÀç ½Ã½ºÅÛ, ¾Ë·ç¹Ì³ª-µµÀç ½Ã½ºÅÛ ¹× Áö¸£ÄڴϾÆ-µµÀç ½Ã½ºÅÛÀÇ °¢ °áÇÕ°è¸éÀ» SEM/EDS·Î ºÐ¼®ÇÑ °á°ú °¢ ½Ã½ºÅÛ¿¡¼­ »óÀÌÇÑ °áÇÕ ¾ç»óÀÌ °üÂûµÇ¾ú´Ù.

°á·Ð: º» ¿¬±¸ °á°ú Áö¸£ÄڴϾÆ-µµÀç ½Ã½ºÅÛÀÇ ÆÄÀý°­µµ°¡ Á¦ÀÏ ³ô¾ÒÀ¸¸ç, ±Ý¼Ó-µµÀç ½Ã½ºÅÛ, ¾Ë·ç¹Ì³ª-µµÀç ½Ã½ºÅÛ ¼ø¼­·Î ³ªÅ¸³µÀ¸¸ç, Àü´Ü°áÇÕ°­µµ´Â ¾Ë·ç¹Ì³ª-µµÀç ½Ã½ºÅÛÀÌ Á¦ÀÏ ³ô¾Ò°í ±Ý¼Ó-µµÀç ½Ã½ºÅÛ, Áö¸£ÄڴϾÆ-µµÀç ½Ã½ºÅÛ ¼ø¼­À¸·Î ³ªÅ¸³µ´Ù.

Purpose: The purpose of this study was to compare the fracture behavior of Zironia, glass infiltrated Alumina and PFM full crown system.

Materials and Methods: Fifteen crowns for each of 3 experimental groups (Zironia, glass infiltrated Alumina and PFM full crown) were made by the conventional method. The crowns mounted on the testing jig were inclined in 30 degrees to the long axis of the tooth and the universal testing machine was used to measure the fracture strength.

Results: 1. The mean fracture strengths were for zirconia system, for PFM system and for glass-infiltrated alumina system (P>.05). 2. The mean shear bond strengths were for zirconia system, for Ni-Cr alloy system and for glass-infiltrated alumina system. 3. The chemical bonding was observed at interfaces between PFM or glass-infiltrated alumina and veneering porcelain, however, no chemical bonding was observed at interface between zirconia and veneering porcelain.

Conclusion: With the study, the fracture strengths of PFM crown system had a higher fracture strength than conventional zirconia system crown and glass-infiltrated alumina crowns. and than the shear bond strengths glass-infiltrated alumina system had a higher shear bond strength than conventional PFM system and zirconia system.

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Áö¸£ÄÚ´Ï¾Æ µµÀç°ü;À¯¸®Ä§Åõ¾Ë·ç¹Ì³ª;ÆÄÀý°­µµ;ÀÌÁö¼¼¶ó
Zirconia ceramic crown;Fracture strength;Ez-Cera;Glass-infiltrated alumina

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