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The Casting Characteristics of Pure Titanium According to Change of The Composition of Phosphate-bonded SiO2 Investments

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ÀºÁø¿ø/Jin Won Eun ±è°æ³²/ÀÌ»ó¹è/±è±¤¸¸/ÀºÁø¿ø/±è°æ³²/ÀÌ»ó¹è/±è±¤¸¸/Kyoung Nam Kim/Sang Bae Lee/Kwang Mahn Kim/Jin Won Eun/Kyoung Nam Kim/Sang Bae Lee/Kwang Mahn Kim

Abstract

°á·Ð
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ÇÏ°í ÆØâÀÌ ¿ì¼öÇÑ Àλ꿰°è ½Ç¸®Ä« ¸Å¸ôÀ縦 °¡Àå ¸¹ÀÌ »ç¿ëÇÏ°í ÀÖ´Ù. ƼŸ´½ÀÇ °í¿ëÀ¶
¿Âµµ¿Í ¸Å¸ôÀç¿ÍÀÇ È­ÇйÝÀÀ¼º ¶§¹®¿¡ ÁÖÁ¶ ÈÄ ÁÖÁ¶ÀûÇÕ¼º°ú Ç¥¸é°æµµ µîÀÇ ÁÖÁ¶Ã¼¿¡ ´ëÇÑ
¹°¼º ¹®Á¦°¡ ¹ß»ýÇÏ°í ÀÖ¾î ±âÁ¸ÀÇ ¸Å¸ôÀ纸´Ù´Â »õ·Î¿î ¸Å¸ôÀçÀÇ °³¹ßÀÌ ½Ã±ÞÇÑ »óȲÀÌ´Ù.
º» ¿¬±¸¿¡¼­´Â ½ÃÇ豺À¸·Î ¸Å¸ôÀçÀÇ ¼ººÐÇÔ·®¿¡ µû¶ó A(EA), B(EB), C(EC) ¹× D(ED)
µî 4Á¾ÀÇ ¸Å¸ôÀ縦 ½ÃÇè Á¦Á¶ÇÏ¿´°í ÇöÀç ½ÃÆǵǰí ÀÖ´Â Titanium Vest ¥±(Ohara Co.,
Japan)¸¦ ´ëÁ¶±º(CO)À¸·Î ½ÃÇèÇÏ¿© ´ÙÀ½°ú °°Àº °á°ú¸¦ ¾ò¾ú´Ù.
1. ¸ðµç ½ÃÇ豺ÀÇ °æÈ­½Ã°£Àº ´ëÁ¶±º¿¡ ºñÇÏ¿© À¯ÀǼº ÀÖ°Ô Âª¾ÒÀ¸¸ç Å©¸®½ºÅä¹ß¶óÀÌÆ®¿Í
¾Ë·ç¹Ì³ª¸¦ ÷°¡ÇÑ °æ¿ì °æÈ­½Ã°£ÀÌ À¯ÀǼºÀÖ°Ô Áõ°¡ÇÏ¿´´Ù (P<005).
2.¸ðµç ½ÃÇ豺ÀÇ 1½Ã°£ ¹× 2ÁÖ ÈÄÀÇ ¾ÐÃà°­µµ´Â ´ëÁ¶±º¿¡ ºñÇÏ¿© À¯ÀǼºÀÖ°Ô ³ô¾ÒÀ¸¸ç
(P<0.05), ½ÃÇ豺°£¿¡´Â À¯ÀǼºÀÖ´Â Â÷ÀÌ°¡ ¾ø¾ú´Ù. ±×¸®°í ½ÃÇèÇÑ ¸ðµç ±ºÀÇ 1½Ã°£ ¾ÐÃà°­
µµ´Â 2ÁÖ ÈÄ ¾ÐÃà°­µµº¸´Ù À¯ÀǼºÀÖ°Ô ³·¾Ò´Ù(P<0.05).
3. °¢ ¸Å¸ôÀç°£ÀÇ ÁÖÁ¶ÀûÇÕ¼ºÀº EA°¡ °¡Àå ³ô¾Ò°í CO°¡ °¡Àå ³·¾Ò´Ù.
4. ÁÖÁ¶Ã¼ÀÇ ¹æ»ç¼± Á¶»ç°á°ú ¸ðµç ±º¿¡¼­ ±Õ¿­°ú finÀÌ °üÂûµÇÁö ¾Ê¾Ò°í EA¿¡¼­ ±âÆ÷°¡
°üÂûµÇ¾ú´Ù.
5. ÁÖÁ¶Ã¼ÀÇ Ç¥¸é¿¡¼­ºÎÅÍ 50 §­ÁöÁ¡ÀÇ °æµµ°ªÀº CO°¡ °¡Àå ³ô¾ÒÀ¸¸ç ¸ðµç ±ºÀÌ 100 §­
ÁöÁ¡¿¡¼­ º»·¡ °æµµ°ªÀ» ȸº¹ÇÏ¿´´Ù.
6. ¸ðµç ÁÖÁ¶Ã¼´Â Ç¥¸é¿¡¼­ºÎÅÍ ÃÖ¿Ü°¢Ãþ°ú ¾Ë·ç¹Ì³ªÀÇ ÇÔ·®ÀÌ ¸¹Àº µÎ ¹ø°Ãþ, ±âµÕ¸ð¾ç
ÀÇ ¼¼ ¹ø°Ãþ ¹× ħ»óÁ¶Á÷ÀÎ ³× ¹ø°ÃþÀ¸·Î ±¸¼ºµÈ Ãþ»ó±¸Á¶°¡ Çü¼ºµÇ¾úÀ¸¸ç ´ëÁ¶±ºÀÌ °¡Àå
ºÒ±ÔÄ¢ÇÏ°í µÎ²¨¿ü´Ù.
ÀÌ»óÀÇ °á°ú·Î ±âÁ¸ÀÇ Á¦Ç°º¸´Ù ¿ì¼öÇÑ ÁÖÁ¶¼º°ú ¹°¼ºÀ» Áö´Ñ ƼŸ´½ ÁÖÁ¶¿ë Àλ꿰°è ½Ç
¸®Ä« ¸Å¸ôÀ縦 °³¹ßÇÒ ¼ö ÀÖÀ» °ÍÀ¸·Î »ý°¢µÇ¾ú´Ù.
#ÃÊ·Ï#
A large increase in the use of titanium in dentistry is driven by the desire to take
advantage of titanium's excellent biocompatibility and its high resistance to corrosion.
The development of investments suitable for titanium castings is critical because their
mechanical properties are greatly affected by the surface-reacted layer.
The purposes of this study were to evaluate the characteristics of Titanium Vest ¥±
(CO) and experimentally produced four phospate- bonded SiO2
investments(EA, EB, EC, ED). A great deal of attention was focused on the influence of
investments, such as setting time, compressive strength, casting compatibility, casting
defects, surface microhardness and interfacial zone of the cast titanium.
The following results were obtained;
1. The setting time of all experimental groups were significantly shorter than control
group(P<0.05).
2. Experimental groups were significantly greater than control group in compressive
strength of 1hr and 2wks(P<0.05) and there was no significant difference among the
experimental groups(P>0.05). Compressive strength after 2wks was significantly greater
than 1hr in all tested groups(P<0.05).
3. EA was showed the highest casting compatibility and CO the lowest.
4. There was no fin in the castings of all groups. There were small porosities in a
dental x-ray inspection of EA.
5. CO was showed the highest microhardness at the distance of 50 §­ from the
surface.
6. The interfacial zone was composed of four layers in all groups. There was irregular
and thick layer in CO.
According to these results, titanium is cartable with experimentally produced
phosphate-bonded SiO2 investments. In addition, there is room for further
investigation of investment materials to improve the precise casting of titanium.

Å°¿öµå

titanium investment; surface-reacted layer; castability; reactivity; hardness;

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