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COMPENSATION EFFECT OF EXPOSURE TIME INCREASE TO DECREASED LIGHT INTENSITY OF VISIBLE-LIGHT CURING UNIT
À±Å¿ø, ÀÌâ¼·, ÀÓ»ó¼ö,
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ÀÌâ¼· ( ) - Á¶¼±´ëÇб³ Ä¡°ú´ëÇÐ ¼Ò¾ÆÄ¡°úÇб³½Ç
ÀÓ»ó¼ö ( ) - Á¶¼±´ëÇб³ Ä¡°ú´ëÇÐ ¼Ò¾ÆÄ¡°úÇб³½Ç
KMID : 0358919970240010325
Abstract
°á·Ð
Á¶»ç°µµ°¡ °¨¼ÒµÇ¾úÀ» °æ¿ì Á¶»ç½Ã°£À» ¿¬ÀåÇÔÀ¸·Î½á º¹ÇÕ·¹Áø ÁßÇÕÀÇ ¾àȸ¦ º¸»óÇÒ ¼ö
ÀÖ´ÂÁöÀÇ ¿©ºÎ ¹× ±× »ó°ü¼ºÀ» ±Ô¸íÇϱâ À§ÇÏ¿© Á¶»ç°µµ¸¦ 420mW/cm2,
540mW/cm2, 630mW/cm2·Î º¯È½ÃÅ°°í Á¶»ç½Ã°£À» 40ÃÊ, 60ÃÊ,
80ÃÊ·Î º¯È½ÃÄÑ ±¤Á¶»ç¸¦ ½ÃÇàÇÑ ÈÄ ½ÃÆíÀÇ Ç¥Ãþ¸é°ú ±âÀú¸éÀÇ ¹Ì¼¼°æµµ¸¦ ÃøÁ¤, ºñ±³ÇÑ
°á°ú ´ÙÀ½°ú °°Àº °á·ÐÀ» ¾ò¾ú´Ù.
1. Á¶»ç°µµ¿Í Á¶»ç½Ã°£ÀÌ Áõ°¡ÇÒ¼ö·Ï º¹ÇÕ·¹ÁøÀÇ Ç¥Ãþ¸é, ±âÀú¸é ¸ðµÎ ¹Ì¼¼°æµµ°¡ Áõ°¡ÇÏ
¿´´Ù. (P<0.01)
2. Á¶»ç°µµÀÇ º¯È¿¡ µû¸¥ ¹Ì¼¼°æµµ¿ÍÀÇ »ó°ü°ü°è´Â ±âÀú¸éÀÇ »ó°ü°è¼ö(¥ã¡Ã0.438)°¡ Ç¥
Ãþ¸éÀÇ »ó°ü°è¼ö(¥ã¡Ã0.213)º¸´Ù Å©°Ô ³ª¿Í ´õ ¸¹Àº »ó°ü°ü°è¸¦ º¸¿´°í Á¶»ç½Ã°£ÀÇ º¯È¿¡
ÀÇÇؼ´Â Ç¥Ãþ¸éÀÇ »ó°ü°è¼ö(¥ã¡Ã0.424)°¡ ±âÀú¸éÀÇ »ó°ü°è¼ö(¥ã¡Ã0.335)º¸´Ù Å©°Ô ³ª¿Í ´õ
¸¹Àº »ó°ü°ü°è¸¦ º¸¿´´Ù.
3. Á¶»ç°µµ¿Í Á¶»ç½Ã°£ÀÇ º¯È¿¡ ÀÇÇÑ º¹ÇÕ·¹ÁøÀÇ ¹Ì¼¼°æµµ ÃøÁ¤¿¡¼ ´ÙÀ½°ú °°Àº ȸ±Í
¹æÁ¤½ÄÀ» ±¸ÇÏ¿´°í ÀÌ¿¡ µû¸¥ Á¶»ç°µµ-Á¶»ç½Ã°£ ÃßÁ¤Ç¥¸¦ ÀÛ¼ºÇÏ¿´´Ù.
H = 0.07 ¡¿D ¡¿ 0.012 ¡¿ I £« 76
(H : Microhardness(KHN) , D : exposure time, I : Light Intensity)
#ÃÊ·Ï#
The purpose of this study was to evaluate the compensation effect of exposure
duration increase to decreased light intensity of visible-light curing unit.
The specimen with 2mm thickness was made of Restorative Z-100TM
and cured with OptiluxTM.
The light intensity was controlled to 420 mW/cm2, 540
mW/cm2, 630mW/cm2 and curing time, also, controlled to 40,
60, 80 seconds.
Cured specimen was stored ina light-proof container for 24 hours to post-irradation
was completed.
Microhardness of top and bottom surface of specimen were measured to evaluate the
depth of cure.
The obtained results were as follows :
1. The microhardness of top and bottom surface of the composite resin specimen was
increased significantly as light intensity and exposure time was increased (P<0.01).
2. Light intensity was more correlated with bottom microhardness (¥ã¡Ã0.438) than top
microhardness(¥ã¡Ã0.213), and exposure time was more correlated with top
microhardness (¥ã¡Ã0.424) than bottom microhardness (¥ã¡Ã0.335).
3. The regressive equation was obtained in this study as follows.
H = 0.07 ¡¿ D ¡¿ 0.012 ¡¿ I £« 76
(H : microhardness (KHN), D : Exposure time, I : Light intensity)
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