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IN VITRO PULP CHAMBER TEMPERATURE CHANGE DURING COMPOSITE RESIN CURING WITH VARIOUS LIGHT SOURCES

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Abstract

¿¬±¸¸ñÀûÀº º¹ÇÕ·¹Áø ÁßÇÕ ±¤À©¿¡ µû¸¥ Ä¡¼ö°­ ¿Âµµ º¯È­¸¦ °üÂûÇÏ´Â °ÍÀ̾ú´Ù. ¿¬±¸¿¡ »ç¿ëµÈ ±¤ÁßÇÕ±â´Â ÀÏ¹Ý ÇöóÁ ¾ÆÅ© ±¤ÁßÇÕ±â, Àú¹ß¿­ ÇöóÁ ¾ÆÅ© ±¤ÁßÇÕ±â, ÀúÃâ·Â ÇÒ·Î°Õ ±¤ÁßÇÕ±â, ÀúÃâ·Â LED ±¤ÁßÇÕ±â, °íÃâ·Â LED ±¤ÁßÇÕ±âÀÇ ´Ù¼¸ °³À̾ú´Ù. K-type thermocouple ¿Âµµ°è¸¦ »ç¿ëÇÏ¿©, ÁßÇÕ±â light guide tip¿¡¼­ÀÇ ¿Âµµ¸¦ ÃøÁ¤ÇÏ°í, ÀÜÁ¸ »ó¾ÆÁú µÎ²²°¡ 1mm°¡ µÇµµ·Ï Çü¼ºÇÑ À¯±¸Ä¡ ¿Íµî¿¡ »ó¾ÆÁú Á¢ÂøÁ¦¸¸ µµÆ÷ÇÑ ±º, ionomer glass¸¦ ÇÔÀ¯ÇÑ base ¶Ç´Â calcium hydroxide¸¦ ÇÔÀ¯ÇÑ base¸¦ 0.5mmµÎ²²·Î ÀÌÀåÇÑ ±º¿¡¼­ °¢°¢ ·¹Áø ÃæÀü Àü°ú ÈÄÀÇ Ä¡¼ö°­³» ¿Âµµ¸¦ ÃøÁ¤ÇÏ¿´´Ù. ÁßÇÕ±â light guide tip¿¡¼­ ÃøÁ¤ÇÑ ¿Âµµ´Â ÀÏ¹Ý ÇöóÁ°¡ 52.94¡É·Î °¡Àå ³ô¾Ò°í, ÀúÃâ·Â LED°¡ 26.14¡É·Î¼­ °¡Àå ³·¾Ò´Ù. ·¹ÁøÃæÀü ÀüÀÇ Ä¡¼ö°­³» ¿Âµµ´Â °íÃâ·Â LED°¡ 41.60~43.34¡É·Î °¡Àå ³ô¾Ò°í, ÀúÃâ·Â LED´Â 36.50~36.76¡É·Î¼­ °¡Àå ³·¾Ò´Ù. ·¹Áø ÃæÀü ÈÄÀÇ Ä¡¼ö°­³» ¿Âµµ´Â °íÃâ·Â LED°¡ 40.22~40.94¡É·Î °¡Àå ³ô¾Ò°í, Àú¹ß¿­ ÇöóÁ¿Í ÀúÃâ·Â LED´Â ¿Âµµ »ó½ÂÀÌ ¾ø¾ú´Ù. BaseÀÇ »ç¿ëÀº ºÎºÐÀûÀÎ ¿­ Â÷´Ü È¿°ú°¡ ÀÖ¾ú´Ù.

The purpose of this study was to observe in vitro pulp chamber temperature rise during composite resin poly¡þmerization with various light-curing sources. The kinds of light-curing sources were plasma arc light(P), low heat plasma arc light, traditional low intensity halogen light, low intensity LED(L-LED), and high intensity LED (H-LED). Temperature at the tip of light guide was measured by a digital thermometer using K-type ther¡þmocouple. Occlusal cavities (2 x 2 x 1.5 mm) were so prepared in extracted human premolars as to the remaining dentin thickness was 1 mm. Dentin adhesive was applied to all cavities. Experimental groups consisted of no base group, ionomer glass base group, and calcium hydroxide base group. Temperature before and after resin filling was measured. Temperature at the light guide tip was the highest with P and the lowest L-LED. Temperature before resin filling was the highest with H-LED and the lowest with L-LED. Temperature after resin filling was the highest with H-LED and the lowest with L-P and with L-LED. The lining of base partially reduced the temperature rise.

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º¹ÇÕ·¹Áø;ÁßÇÕ±¤;Ä¡¼ö°­;¿Âµµ;Composite resin;Curing light;Pulp chamber;Temperature

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