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Effects of Curing Mode on the Degree of Conversion of Composite Resins and Compomers using FTIR

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Abstract

°á·Ð
½É¹ÌÀû ¼öº¹Àç·áÀÎ º¹ÇÕ·¹ÁøÀÇ ÁßÇÕµµ¿Í ¼öº¹¹°ÀÇ ±â°èÀû ¼ºÁúÀº ±íÀº »ó°ü°ü°è°¡ ÀÖ´Ù.
ÁßÇÕµµ¸¦ ÃøÁ¤ÇÏ´Â ¹æ¹ý¿¡´Â ¿©·¯ °¡Áö°¡ ÀÖÁö¸¸ ½Å¼ÓÇÏ°í °£´ÜÇϸç Á¤È®ÇÑ FTIRÀ» ¸¹ÀÌ
ÀÌ¿ëÇÏ°í ÀÖ´Ù. º» ¿¬±¸¿¡¼­´Â Aelitefil(AF; U.S.A.), VeridonFil-Photo(VF; Korea),
Z-100(ZH; U.S.A.) µî 3Á¾ÀÇ º¹ÇÕ·¹Áø°ú Compoglass (CG; Liechtenstein), Dyract(DR;
Germany) µî 2Á¾ÀÇ ÄÞÆ÷¸Ó¸¦ ÀÌ¿ëÇÏ¿© µÎ²² 0.1¡¾0.02 mm°¡ µÇµµ·Ï ½ÃÆíÀ» Á¦ÀÛÇÏ¿´À¸¸ç,
ÇÑ ±ºÀº 20ÃÊ µ¿¾È ±¤ÁßÇÕ(Visilux 2, 3M, U.S.A.)ÇÏ°í, ´Ù¸¥ ±ºÀº 5ÃÊ µ¿¾È 0.23 W
continuous modeÀÇ ¾Æ¸£°ï ·¹ÀÌÀú(hgm Dental 200TM)·Î ÁßÇÕÇÏ¿© 37%¿¡¼­ 24½Ã°£µ¿¾È
°ÇÁ¶ »óÅ·Πº¸°üÇÑ ÈÄ FTIR spectrometer (BRUKER IFS 88, Germany)·Î ÃøÁ¤ÇÑ ÁßÇÕ Àü
ÈÄÀÇ aliphatic C=C(1640cm-1)¿Í N-H(3380cm-1)ÀÇ Èí¼ö ÃÖ°íÄ¡¸¦ baseline method¿¡ µû¶ó
±¸ÇÏ¿´´Ù. ÁßÇÕ ÈÄ C=C/N-H Èí¼öµµ¿Í ÁßÇÕ Àü C=C/N-H Èí¼öµµÀÇ ºñ¸¦ ÀÜÁ¸ ÀÌÁß°áÇÕÀÇ
¾çÀ¸·Î °áÁ¤ÇÏ¿´À¸¸ç ´ÙÀ½°ú °°Àº °á°ú¸¦ ¾ò¾ú´Ù.
1. ±¤ Á¶»ç±ºÀÇ ÁßÇÕµµ´Â VF > AF > ZH > CG > DR ¼øÀ¸·Î ÄÇ´Ù(p<0.05).
2. ·¹ÀÌÀú Á¶»ç±ºÀÇ ÁßÇÕµµ´Â VF > AF > CG > ZH > DR ¼øÀ¸·Î ÄÇ´Ù(p<0.05).
3. °¢ Àç·áº°·Î ±¤ Á¶»ç¿Í ·¹ÀÌÀú Á¶»çÀÇ ºñ±³´Â ZH¸¦ Á¦¿ÜÇÏ°í À¯ÀÇÂ÷°¡ ¾ø¾ú´Ù
(p<0.05).
ÀÌ»óÀÇ °á°ú·Î ZH¸¦ Á¦¿ÜÇÑ ¸ðµç Àç·á¿¡¼­ ¾Æ¸£°ï·¹ÀÌÀú¸¦ ÀÌ¿ëÇÑ ÁßÇÕÀÌ È¿°úÀûÀ̾ú°í
ÄÞÆ÷¸ÓÀÇ ÁßÇÕµµ°¡ º¹ÇÕ·¹Áøº¸´Ù ³·Àº °æÇâÀ» º¸¿´´Ù.

The degree of conversion(DC) of composite resins are closely correlated with the
mechanical properties. Fourier Transform Infrared(FTIR) Analysis is currently used to
determine the DC for many advantages. In this study, three composite resins;
Aelitefil(AF; U.S.A), VeridonFil-Photo(VF; Korea), Z-100(ZH; U.S.A) and two
compomers; Compoglass(CG; Lichtenstein), Dyract(DR; Germany) were used to make
specimens with thickness of 0.1¡¾0.02§®. After one group of samples were light-cured
for 20 second and those of the other group were Argen laser-cured with 0.23W
continuous mode for 5 second, all the samples were kept dry at 37¡É for 24h. From the
spectra acquired on an FTIR spectrometer(Bruker IFS 88, Germany), the aliphatic C=C
absorbance peak at 1640§¯-1 and the N-H reference peak at 3380§¯
-1 were measured using a standard baseline technique. The ratios of
absorbance of C=C/N-H before polymerization to that of C=C/N-H after polymerization
were used to calculate the residual C=C bonds.
The results were as follows ;
1. The descending order of the degree of conversion was VF > AF > ZH > CG >
DR in light cured group(p<0.05).
2. The descending order of the degree of conversion was VF > AF > CG > ZH >
DR in laser cured group(p<0.05).
3. The degree of conversion of light-cured group was higher than laser-cured one
only in ZH and not significantly different in other materials(p<0.05).
In conclusion, the argon laser showed efficient curing capacity compared with light
curing unit except ZH and the degree of conversion of compomer was inclined to be
lower than that of composite resin.

Å°¿öµå

argon laser; compomer; composite resin; degree of conversion; FTIR;

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