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Development of Dental Glass-Ceramic Biomaterials : ¥±. Synthesis and Physical Properties of Zirconia Reinforced Glass-Ceramic

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Abstract

°á·Ð
Ä¡°ú¿ëÀ¸·Î »ç¿ëÇÏ´Â ±Û¶ó½º-¼¼¶ó¹Í¿¡ ¾Ë·ç¹Ì³ª¿Í Áö¸£ÄÚ´Ï¾Æ °°Àº °­µµ°¡ ¿ì¼öÇÑ »êÈ­
¹°À» ÷°¡ÇÏ¿© °­È­Çü ±Û¶ó½º-¼¼¶ó¹ÍÀ» ÇÕ¼ºÇÏ·Á´Â ¸¹Àº ¿¬±¸°¡ ÀÖ´Ù. º» ¿¬±¸´Â ¿î¸ð-ÀÎȸ
¼®°è (EXP-1B) ¹× ÀÎȸ¼®-wollastonite °è ±Û¶ó½º-¼¼¶ó¹ÍÀ» °­È­Çϱâ À§ÇÏ¿© ¼ø¼ö Áö¸£ÄÚ
´Ï¾Æ¸¦ 10 wt.% ÷°¡ÇÑ EXP-1C ¿Í EXP-2D, ÀÌÆ®¸®¾Æ·Î ¾ÈÁ¤È­ÇÑ Áö¸£ÄÚ´Ï¾Æ (3 mol%
Y2O3) ¸¦ 10 wt.% ÷°¡ÇÑ EXP-1D ¿Í EXP-2E µî ÃÑ 5 Á¾ÀÇ
±Û¶ó½º-¼¼¶ó¹ÍÀ» ÇÕ¼ºÇÏ¿© X-¼± ȸÀý ºÐ¼®±â, ÁÖ»çÀüÀÚÇö¹Ì°æ ¹× EDXA ·Î °áÁ¤»ó°ú ¹ÝÀÀ
»ý¼º¹° µîÀ» ºÐ¼®ÇÏ¿´´Ù. ¾Æ¿ï·¯ ÇÕ¼ºÇÑ ±Û¶ó½º-¼¼¶ó¹ÍÀÇ ±â°èÀû °¡°ø¼º, ¾ÐÃà°­µµ, ±¼°î°­
µµµî ±â°èÀû Ư¼ºÀ» ½ÃÇèÇÑ ¹Ù ´ÙÀ½°ú °°Àº °á°ú¸¦ ¾ò¾ú´Ù.
1. ¿î¸ð-ÀÎȸ¼®°è ±Û¶ó½º-¼¼¶ó¹ÍÀÎ EXP-1B ´Â ¿î¸ð°è ±Û¶ó½º-¼¼¶ó¹ÍÀÎ EXP-1 °ú CaO
¿Í P2O5 ¼ººÐÀÌ »óÀÌÇÑ EXP-1AÀÇ ±â°èÀû Ư¼º°ú °¡°ø¼ºÀº À¯
»çÇÏ¿´´Ù.
2. ¿î¸ð-ÀÎȸ¼®°è ±Û¶ó½º-¼¼¶ó¹Í¿¡ ¼ø¼ö Áö¸£ÄڴϾƳª ÀÌÆ®¸®¾Æ·Î ¾ÈÁ¤È­ÇÑ Áö¸£ÄڴϾƸ¦
÷°¡ÇÑ °æ¿ì ±â°èÀû °¡°ø¼ºÀº À¯ÀÇÇÑ º¯È­°¡ ¾ø¾úÀ¸³ª ±¼°î°­µµ¿Í ¾ÐÃà°­µµ´Â À¯ÀÇÇÏ°Ô Áõ
°¡ÇÏ¿´´Ù (p<0.05).
3. ÀÎȸ¼®-wollastonite °è ±Û¶ó½º-¼¼¶ó¹Í¿¡ ¼ø¼ö Áö¸£ÄڴϾƳª ÀÌÆ®¸®¾Æ·Î ¾ÈÁ¤È­ÇÑ Áö¸£
ÄڴϾƸ¦ ÷°¡ÇÑ °æ¿ì ±â°èÀû °¡°ø¼ºÀº À¯ÀÇÇÑ º¯È­´Â ¾ø¾úÀ¸³ª ±¼°î°­µµ¿Í ¾ÐÃà°­µµ´Â À¯
ÀÇÇÏ°Ô Áõ°¡ÇÏ¿´´Ù (p<0.05).
4. °­È­Á¦·Î »ç¿ëÇÑ ¼ø¼ö Áö¸£ÄÚ´Ï¾Æ¿Í ÀÌÆ®¸®¾Æ·Î ¾ÈÁ¤È­ÇÑ Áö¸£ÄڴϾư¡ ±Û¶ó½º-¼¼¶ó¹Í
¿¡ ÁÖ´Â ¿µÇâÀº À¯»çÇÏ¿´´Ù.
#ÃÊ·Ï#
Dental glass-ceramic composites utilizing the good mechanical properties of
Al2O3 and ZrO2 have been introduced. In
recent years, zirconia has received considerable attention as a biomedical material. In
this paper we investigate the role of zirconia on mechanical properties and machinability
of mica-apatite based and apatite-wollastonite based glass-ceramics. Five experimental
glass-ceramics were synthesized and pure ZrO2 and an
Y2O3-partially-stabilized ZrO2 were used as a
reinforced agents. Specimens were analysed by the x-ray diffractometer and SEM with
EDXA. Machinability of glass-ceramic was evaluated by CAD-CAM equipment and
SEM. Flexural strength and compressive strength of specimens were measured by using
Instron. From the experiments, the following results were obtained. In the mica-apatite
based glass-ceramic, EXP-1B showed similar mechanical properties with EXP-1 and
EXP-1A, which were synthesized at the former paper. Addition of zirconia in
mica-apatite based glass-ceramics did not affect on machinability, but enhanced the
flexural and compressive strength (p<0.05). Apatite-wollastonite based glass-ceramic
showed similar effect of zirconia on machinability and mechanical properties. Effect of
reinforcement of pure zirconia was not significantly different with yttria partially
stabilized zirconia (p>0.05).

Å°¿öµå

glass-ceramic; zirconia reinforced; machinability; crystal; physical properties;

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