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Osseointegration of zirconia implant in the tibia of pigs

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±èÀÌ°æ ( Kim Lee-Kyoung ) - ´Ü±¹´ëÇб³ Ä¡°ú´ëÇÐ Ä¡°úº¸Ã¶Çб³½Ç
Á¶ÀÎÈ£ ( Cho In-Ho ) - ´Ü±¹´ëÇб³ Ä¡°ú´ëÇÐ Ä¡°úº¸Ã¶Çб³½Ç

Abstract

¿¬±¸ ¸ñÀû: ÃÖ±Ù Áö¸£ÄÚ´Ï¾Æ ÀÓÇöõÆ®°¡ Å©°Ô Çâ»óµÈ ¹°¸®Àû ¼ºÁú, ÀÚ¿¬Ä¡¿Í À¯»çÇÑ »öÁ¶, ¶Ù¾î³­ »ýü ÀûÇÕ¼ºÀ¸·Î ÁÖ¸ñ ¹Þ°í ÀÖ´Ù. ÀÌ¿¡ º» ¿¬±¸¿¡¼­´Â ±¹³»¿¡¼­ ½ÃÆǵǰí ÀÖ´Â »ó¿ë ŸÀÌŸ´½ ÀÓÇöõÆ®¿Í °³¹ß ´Ü°èÀÎ Áö¸£ÄÚ´Ï¾Æ ÀÓÇöõÆ®ÀÇ °ñÀ¯ÂøÀ» ºñ±³ ¿¬±¸ÇÏ¿´´Ù.

¿¬±¸ Àç·á ¹× ¹æ¹ý: »ó¿ë ŸÀÌŸ´½ ÀÓÇöõÆ®(T ±º)¿Í ±â°è Àý»èµÈ ³ª»çÇü Áö¸£ÄÚ´Ï¾Æ ÀÓÇöõÆ®(Z ±º), ±â°è Àý»è ÈÄ ¾Ë·ç¹Ì³ª »÷µå ºí¶ó½ºÆÃÀ¸·Î Ç¥¸é ó¸®µÈ ³ª»çÇü Áö¸£ÄÚ´Ï¾Æ ÀÓÇöõÆ®(ZS ±º)ÀÇ Ç¥¸é °ÅÄ¥±â¸¦ ÃøÁ¤ÇÑ ÈÄ 6¸¶¸® µÅÁöÀÇ ÁÂ, ¿ìÃø ÇÏÁö °æ°ñ¿¡ ½Ä¸³ÇÏ¿© 1ÁÖ, 4ÁÖ, 12ÁÖ¿¡ °¢°¢ Èñ»ýÇÏ¿© Periotest values (PTVs) ÃøÁ¤, Á¶Á÷ÇÐÀû ÃøÁ¤ ¹× Á¶Á÷ °èÃøÇÐÀû ÃøÁ¤, ÁÖ»ç ÀüÀÚ Çö¹Ì°æ °üÂûÀ» ½ÃÇàÇÏ¿´´Ù. Æò±Õ Ç¥¸é °ÅÄ¥±â¿Í PTVs, Á¶Á÷°èÃøÇÐÀû ÃøÁ¤ °á°ú´Â ÀÏ¿øºÐ»êºÐ¼®À» ÅëÇØ Åë°è 󸮵Ǿú´Ù(¥á=.05).

°á°ú: °¢ ±º ÀÓÇöõÆ®ÀÇ Ç¥¸é °ÅÄ¥±â¸¦ ÃøÁ¤ÇÑ °á°ú T ±ºÀÌ Z ±º, ZS ±º¿¡ ºñÇØ ´õ À¯ÀÇÇÏ°Ô ³ôÀº Æò±Õ Ç¥¸é °ÅÄ¥±â °ªÀ» º¸¿´´Ù. PTVs´Â ÃøÁ¤ ½Ã±â ¸ðµÎ¿¡¼­ T ±ºÀÌ »ó´ëÀûÀ¸·Î ³·Àº °ªÀ» º¸¿´À¸³ª °¢ ±º¿¡ µû¶ó, ½Ã±â¿¡ µû¶ó ¸ðµÎ Åë°èÀûÀ¸·Î À¯ÀÇÇÏÁö´Â ¾Ê¾Ò´Ù. ½Ä¸³ 1ÁÖÂ÷ °ñÁ¢ÃËÀ² ÃøÁ¤ °á°ú Z ±ºÀÌ T ±º, ZS ±º¿¡ ºñÇØ À¯ÀǼº ÀÖ°Ô ³ô¾Ò°í, °ñ¸éÀûÀ²Àº T ±º, Z ±ºÀÌ ZS ±º¿¡ ºñÇØ À¯ÀǼº ÀÖ°Ô ³ô¾Ò´Ù. ½Ä¸³ 4ÁÖÂ÷ °ñÁ¢ÃËÀ² ÃøÁ¤¿¡¼­ T ±ºÀÌ Z ±º, ZS ±º¿¡ ºñÇØ À¯ÀǼº ÀÖ°Ô ³ô¾Ò°í, °ñ¸éÀûÀ²Àº ±º°£ À¯ÀÇÇÑ Â÷°¡ ¾ø¾ú´Ù. ½Ä¸³ 12ÁÖÂ÷ °ñÁ¢ÃËÀ²Àº T ±º, ZS ±º, Z ±º ¼øÀ¸·Î ³·¾ÆÁ³°í ¸ðµç ±º°£ Åë°èÀûÀ¸·Î À¯ÀÇÇÑ Â÷ÀÌ°¡ Á¸ÀçÇÏ¿´´Ù. °ñ¸éÀûÀ²Àº T ±º, ZS ±ºÀÌ Z ±º¿¡ ºñÇØ À¯ÀǼº ÀÖ°Ô ³ô¾Ò´Ù.

°á·Ð: ÀÌ»óÀÇ °á°ú´Â Áö¸£ÄÚ´Ï¾Æ ÀÓÇöõÆ®ÀÇ °ñÀ¯ÂøÀÌ Å¸ÀÌŸ´½ ÀÓÇöõÆ®¿¡ ºñÇØ ºÎÁ·Çϸç, »ó¿ëÈ­¸¦ À§Çؼ­´Â Áö¸£ÄÚ´Ï¾Æ ÀÓÇöõÆ®ÀÇ Ç¥¸é º¯Çü¿¡ °üÇÑ ¿¬±¸°¡ ´õ ÇÊ¿äÇÔÀ» ½Ã»çÇÑ´Ù.

PURPOSE: The purposes of this study were to investigate osseointegration around zirconia implants which had machined or alumina sandblasted surface, and to compare the results with titanium implants.

MATERIALS AND METHODS: The study was performed on the tibia of 6 pigs. Three types of implants were investigated: group T-titanium implant, group Z-machined zirconia implant, group ZS-alumina sandblasting treated zirconia implant. Zirconia implants were manufactured from yttria-stabilized tetragonal zirconia polycrystalline (Acucera Inc., Pocheon, Korea). A total of 36 implants were installed in pigs' tibias. After 1, 4 and 12 weeks of healing period, the periotest and the histomorphometric analysis were performed. The data were analyzed using one-way ANOVA and significance was assessed by the Scheffe test (¥á=.05).

RESULTS: In the measurement of surface roughness, highest Ra value was measured in group T with significant difference. No significant differences were found among groups regarding Periotest values. After 1 week, in comparison of bone to implant contact (BIC), group Z showed higher value with significant difference. In comparison of bone area (BA), group T and group Z showed higher value with significant difference than group ZS. After 4 weeks, in comparison of BIC, group T showed higher value with significant difference. Comparison of BA showed no significant difference among each implant. After 12 weeks, the highest mean BIC values were found in group T with significant difference. Group ZS showed higher BIC value with significant difference than group Z. In comparison of BA, group T and group ZS showed higher value with significant difference than group Z.

CONCLUSION: Zirconia implant showed low levels of osseointegration in this experiment. Modification of surface structure should be taken into consideration in designing zirconia implants to improve the success rate.

Å°¿öµå

Áö¸£ÄÚ´Ï¾Æ ÀÓÇöõÆ® °ñ-ÀÓÇöõÆ® Á¢ÃËÀ² °ñ¸éÀûÀ² Á¶Á÷°èÃøÇÐÀû ¿¬±¸
Zirconia implant; Bone to implant contact; Bone area; Histomorphometry

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KoreaMed