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A review of biocompatibility of zirconia and bioactivity as a zirconia implant: In vivo experiment

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¼­´Ù¿ø ( Suh Da-Won ) - ¼­¿ï´ëÇб³ Ä¡ÀÇÇдëÇпø
±è¿µ±Õ ( Kim Young-Kyun ) - ºÐ´ç¼­¿ï´ëÇб³º´¿ø ±¸°­¾Ç¾È¸é¿Ü°ú
À̾çÁø ( Lee Yang-Jin ) - ºÐ´ç¼­¿ï´ëÇб³º´¿ø Ä¡°úº¸Ã¶°ú

Abstract

½É¹ÌÀû Ä¡·á¿¡ ´ëÇÑ ¿ä±¸°¡ ´Ã¾î³ª¸é¼­ ³ôÀº °­µµ¿Í ½É¹Ì¼ºÀ» °®´Â Áö¸£ÄڴϾÆÀÇ ¿ä±¸µµ Áõ°¡ÇÏ°í ÀÖ´Ù. ÀÌ·¯ÇÑ È帧¿¡ ºñÃß¾î Áö¸£ÄڴϾÆÀÇ »ýüÀû ÇÕ¼ºÀ» Æò°¡ÇÏ´Â °ÍÀº Áß¿äÇÑ ÀÏÀÌ´Ù. À̹ø ³í¹®¿¡¼­´Â Áö¸£ÄڴϾÆÀÇ »ýüÀûÇÕ¼º¿¡ ´ëÇÑ in vivo ½ÇÇè¿¡ ´ëÇÑ ¹®Çå ¿¬±¸¸¦ ÁøÇàÇÏ¿´´Ù. In vivo ½ÇÇè¿¡¼­ ¿¬Á¶Á÷, °æÁ¶Á÷¿¡ ´ëÇÑ Áö¸£ÄڴϾÆÀÇ »ýüÀûÇÕ¼ºÀ» È®ÀÎÇÒ ¼ö ÀÖ¾ú´Ù. ´Ù¾çÇÑ ½ÇÇ赿¹° ¹× ȯÀÚ¿¡¼­ ÁøÇàµÈ ¿¬±¸ÀÇ ´ë´Ù¼ö¿¡¼­ Áö¸£ÄڴϾÆÀÇ ³ôÀº »ýüÀûÇÕ¼ºÀÌ º¸°íµÇ¾úÀ¸¸ç, ½Å»ý°ñ ÇÕ¼º ¹× °ñºÎÂøÀÇ ¸é¿¡¼­ ƼŸ´½°ú À¯»çÇÑ ¼ºÁúÀ» º¸¿´´Ù. ÇÑÆí, Áö¸£ÄڴϾƴ ÀÓÇöõÆ®·Îµµ È°¿ëÇÒ ¼ö ÀÖ´Ù. ÀÓÇöõÆ®·Î È°¿ëÇϱâ À§ÇØ HA (hydroxyapatite)¸¦ ó¸®ÇÏ¿© »ýüȰ¼ºÀ» ³ôÀÌ´Â ´Ù¾çÇÑ ¹æ½ÄÀÌ Á¦¾ÈµÇ°í ÀÖ´Ù. ÇÏÁö¸¸ ±âÁ¸ÀÇ Æ¼Å¸´½ ÀÓÇöõÆ®¿¡ HA¸¦ ÄÚÆÃÇÏ´Â ¹æ½ÄÀº ³·Àº °áÇÕ°­µµ ¹× HAÀÇ º¯¼ºÀ¸·Î ÀÎÇÑ ¹®Á¦Á¡ÀÌ ÀÖ¾ú±â ¶§¹®¿¡ HA-Áö¸£ÄÚ´Ï¾Æ composite, HA-coated Áö¸£ÄڴϾÆ, HA-Áö¸£ÄÚ´Ï¾Æ functionally graded material (FGM) ¶Ç´Â ¾Ë·ç¹Ì³ª °³Àç HA-Áö¸£ÄÚ´Ï¾Æ µîÀÇ »õ·Î¿î ¹æ½ÄÀÌ ¿¬±¸µÇ°í ÀÖ´Ù. ÀÌ·¯ÇÑ ¹æ½ÄµéÀº º¸´Ù ³ôÀº °áÇÕ°­µµ¸¦ Áö´Ï°í ÀÖÀ¸¸ç, ³ôÀº »ýüÀûÇÕ¼ºÀ» º¸¿©ÁÖ°í ÀÖ´Ù.

Increasing demands for esthetic dental treatment, zirconia, which has high mechanical and esthetic properties, had been applied more and more in clinics. Therefore, assessment of biocompatibility of zirconia is necessary. In this article, a review of in vivo studies of zirconia compatibility was performed. In vivo studies showed zirconia had great biocompatibility both on soft and hard tissue. Studies with various animals and patients reported high biocompatibility of zirconia. In terms of bone synthesis and bone adhesion, zirconia showed similar biocompatible properties to titanium. On the other hand, zirconia could be used as implant. For using as an implant, various methods of Hydroxyapatite (HA) coating had been suggested. Since HA coating on titanium implant showed some problems such as low bonding strength and degeneration ofHA, HA-zirconia composite, HA-coated zirconia, and HA-zirconia functionally graded material (FGM) or intermediate layer of alumina had been proposed. These methods showed higher bonding strength and biocompatibility.

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»ýüȰ¼º; »ýüÀûÇÕ¼º; HA ÄÚÆÃ; ÀÓÇöõÆ®; Áö¸£ÄڴϾÆ
Bioactivity; Biocompatibility; HA coating; Implant; Zirconia

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