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중합방법에 따른 레진과 콤포머의 FTIR을 이용한 중합도 측정

Other Titles
 Effects of Curing Mode on the Degree of Conversion of Composite Resins and Compomers using FTIR 
Authors
 배지명  ;  김광만  ;  김경남  ;  김호철 
Citation
 Journal of the Korean Research Society for Dental Materials (대한치과기재학회지), Vol.25(2) : 119-124, 1998 
Journal Title
 Journal of the Korean Research Society for Dental Materials (대한치과기재학회지) 
ISSN
 1225-1631 
Issue Date
1998
Keywords
argon laser ; FTIR ; degree of conversion ; composite resin ; compomer
Abstract
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±0.02㎜. 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℃ 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.
Files in This Item:
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Appears in Collections:
2. College of Dentistry (치과대학) > Dept. of Dental Biomaterials and Bioengineering (치과생체재료공학교실) > 1. Journal Papers
Yonsei Authors
Kim, Kyoung Nam(김경남)
Kim, Kwang Mahn(김광만) ORCID logo https://orcid.org/0000-0002-5235-0294
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/176813
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