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Effect of different pattern size and pattern shape on castability of commercially pure titanium

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ÀÌÈ¿ÀÏ ( Lee Hyo-Il ) - Àü³²´ëÇб³ Ä¡ÀÇÇÐÀü¹®´ëÇпø º¸Ã¶Çб³½Ç
½ÅÀ¯Áø ( Shin Yoo-Jin ) - Àü³²´ëÇб³ Ä¡ÀÇÇÐÀü¹®´ëÇпø º¸Ã¶Çб³½Ç
±èÈ«ÁÖ ( Kim Hong-Joo ) - ´ëÀü¼±Ä¡°úº´¿ø º¸Ã¶¼¾ÅÍ
¹Ú»ó¿ø ( Park Sang-Won ) - Àü³²´ëÇб³ Ä¡ÀÇÇÐÀü¹®´ëÇпø º¸Ã¶Çб³½Ç

Abstract

¿¬±¸ ¸ñÀû: º» ¿¬±¸´Â ³³ÇüÀÇ Å©±â ¹× ÇüÅ º¯È­°¡ ƼŸ´½ÀÇ ÁÖÁ¶¼º¿¡ ¾î¶°ÇÑ ¿µÇâÀ» ¹ÌÄ¡´ÂÁö È®ÀÎÇÏ°íÀÚ ÇÏ¿´´Ù.

¿¬±¸ Àç·á ¹× ¹æ¹ý: ³³ÇüÀÇ Å©±â¿¡ µû¶ó Small Pattern±º°ú Large Pattern±ºÀ¸·Î ³ª´©¾ú°í, °¢°¢ Flat, Semicircular, Horse-shoe ¹× V-shapeÇüÀ¸·Î ³³ÇüÀÇ ÇüÅ¿¡ µû¶ó 4°³ÀÇ ÇÏÀ§±ºÀ¸·Î ³ª´©¾î ÃÑ 8°³ÀÇ ±ºÀ¸·Î ºÐ·ùÇÏ¿´´Ù. ¸ðµç ³³ÇüÀÇ ÁÖÀÔ¼±Àº Runner-barÇüÀ¸·Î ÇÏ¿´´Ù. ƼŸ´½ ÁÖÁ¶ Àü¿ë ¸Å¸ôÀçÀÎ ½Ç¸®Ä«°è ¸Å¸ôÀç(Rematitan Plus, Dentarum, Germany)¸¦ ÀÌ¿ëÇÏ¿© ¸Å¸ôÇÏ¿´°í, ¾ÆÅ©¿ëÀ¶ ¹æ½ÄÀÇ ¿ø½É ÁÖÁ¶±â(Ti Cast Super R, Selec, Japan)¸¦ »ç¿ëÇÏ¿© ÁÖÁ¶ÇÏ¿´´Ù. ÁÖÁ¶¼º Æò°¡´Â ¿ÏÀüÇÑ ÇüÅ·ΠÁÖÁ¶ µÈ °ÝÀÚÀÇ °³¼ö¸¦ ôµµ·Î ÀçÇö Á¤µµ¸¦ È®ÀÎÇÏ¿´´Ù. Åë°è󸮴 SPSS ver. 19.0 for WIN (SPSS. Inc. Chicago, IL, USA)¸¦ »ç¿ëÇÏ¿´´Ù. ³³ÇüÀÇ Å©±â ¹× ÇüÅ¿¡ µû¸¥ ƼŸ´½ÀÇ ÁÖÁ¶¼ºÀ» ÀÌ¿øº¯·® ºÐ»êºÐ¼®(Two-way ANOVA)À» ÀÌ¿ëÇÏ¿© ºÐ¼®ÇÏ¿´´Ù.

°á°ú:³³ÇüÀÇ Æò±Õ ÀçÇöÀ²Àº Small Pattern±ºÀº 95.14%, Large Pattern±ºÀº 94.30%·Î Small Pattern±ºÀÇ ÁÖÁ¶¼ºÀÌ À¯ÀÇÇÏ°Ô ³ô¾Ò´Ù(P<.05). ³³ÇüÀÇ ÇüÅ º¯È­¿¡ µû¸¥ ÁÖÁ¶¼ºÀº Small Pattern±º¿¡¼­ Semicircular±º 133.20°³(96.52%), Horse-shoe±º 132.40°³(95.94%), Flat±º 132.00°³(95.65%), V-shape±º 127.60°³(92.46%) ¼øÀ¸·Î °¨¼ÒÇÏ¿´´Ù. Large Pattern±ºÀº Flat±º 198.60°³(95.94%), V-shape±º 197.80°³(95.56%), Semicircular±º 196.40°³(94.88%), Horse-shoe±º 188.00°³(90.82%)¼øÀ¸·Î °¨¼ÒÇÏ¿´´Ù. Small Pattern±º°ú Large Pattern±º ¸ðµÎ¿¡¼­ ³³ÇüÀÇ Çüź¯È­¿¡ µû¸¥ ÁÖÁ¶¼ºÀº À¯ÀÇÇÒ ¸¸ÇÑ Â÷À̸¦ º¸ÀÌÁö ¾Ê¾Ò´Ù(P>.05).

°á·Ð: ÁÖÁ¶Ã¼ÀÇ Å©±â°¡ ÀÛÀ»¼ö·Ï ÁÖÁ¶¼ºÀÌ ³ô¾ÆÁüÀ» ¾Ë ¼ö ÀÖ¾ú°í ÇüÅ¿¡ µû¸¥ ÁÖÁ¶¼º¿¡¼­´Â Å« ¿µÇâÀ» ¹ÞÁö ¾Ê´Â °ÍÀ» ¾Ë ¼ö ÀÖ¾ú´Ù.

PURPOSE: The purpose of this study was to investigate the effect of geometrically different wax pattern shapes and sizes on the castability of Grade2 Cp-Ti (commercially pure titanium).

MATERIALS AND METHODS: Total of 40 mesh wax pattern (61 mm ¡¿ 24 mm, 207 grids), (61 mm ¡¿ 17 mm, 138 grids) was cast in this experiment. Depending on the geometrical shape of the wax pattern, 8 groups was organized; Flat, Semicircular, Horse-shoe and V-shape, each consisting 5 samples. Runner-bar sprue was used in all patterns. The number of completely cast grid in wax pattern served as a measure for the castability of comercially pure titanium.

RESULTS: The mean value of square count in each group was as followed; 133.20 squares in group SS (96.52%), 132.40 squares in group SH (95.94%), 132.00 squares in group SF (95.65%), 127.60 squares in SV (91.43%), 198.60 squares in group LF (95.94%), 197.80 squares in group LV (95.56%), 196.40 squares in group LS (94.88%), and 188.00 squares in group LH (90.82%).

CONCLUSION: Within the limitations of this study the results indicate that there were no sttistically significant difference in castability of titanium regarding wax pattern shape (P>.05). However, Small size wax patterns were showing the noticeable castability more than Large size pattern.

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Titanium; Castability; Wax pattern; Size; Shape; Sprue

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KCI
KoreaMed