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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2014.3
- 수록면
- 29 - 38 (10page)
- DOI
- 10.14815/kjdm.2014.41.1.29
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The purpose of this study was to investigate the effect of initiator and inhibitor concentration on the polymerization shrinkage kinetics of photo-cured experimental dental resin composites. We prepared experimental composites with different curing rates by varying the concentration of photo-initiator (Camphorquinone) and inhibitor (Butylated hydroxytoluene). During photo-activated curing, the polymerization shrinkage, maximum shrinkage rate, peak shrinkage rate time, and polymerization shrinkage stress of the experimental composites were measured using a laboratory made strain-stress analyzer for 10 minutes. The degree of conversion of cured composite was also evaluated. The results were analyzed with ANOVA and Duncan post-hoc test. The polymerization shrinkage and degree of conversion of the composites increased with increasing initiator concentration, while they did not affected by inhibitor concentration. The maximum shrinkage rate increased with increasing initiator concentration, but it decreased with increasing inhibitor concentration. The peak shrinkage rate time decreased with increasing initiator concentration, while being delayed with increasing inhibitor concentration. The polymerization shrinkage stress of the composites ranged 2.97?7.91 MPa, it increased with increasing initiator concentration. Increased inhibitor concentration reduced shrinkage stress and curing rate, without compromising the degree of conversion.
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ABSTRACT
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고찰
결론
참고문헌
참고문헌 (27)
참고문헌 신청
1. [학술지(정기간행물)] - Asmussen E / 1982 / Factors affecting the quantity of remaining double bond in restorative resin polymers / J Dent Res 90 : 490 ~ 496
2. [학술지(정기간행물)] - Braga RR / 2002 / Contraction stress related to degree of conversion and reaction kinetics / J Dent Res 81 : 114 ~ 118
3. [학술지(정기간행물)] - Caroline E / 2012 / Polymerization kinetics and reactivity of alternative initiators systems for use in light activated dental resins / Dent Mater 28 : 1199 ~ 1206
4. [학술지(정기간행물)] - Ende AB / 2010 / Does a low-shrinking composite induce less stress at the adhesive interface / Dent Mater 26 : 215 ~ 222
5. [학술지(정기간행물)] - Ferracane JL / 1986 / The effect of resin formulation on the degree of conversion and mechanical properties of dental restorative resins / J Biomed Mater Res 20 : 121 ~ 131
2. [학술지(정기간행물)] - Braga RR / 2002 / Contraction stress related to degree of conversion and reaction kinetics / J Dent Res 81 : 114 ~ 118
3. [학술지(정기간행물)] - Caroline E / 2012 / Polymerization kinetics and reactivity of alternative initiators systems for use in light activated dental resins / Dent Mater 28 : 1199 ~ 1206
4. [학술지(정기간행물)] - Ende AB / 2010 / Does a low-shrinking composite induce less stress at the adhesive interface / Dent Mater 26 : 215 ~ 222
5. [학술지(정기간행물)] - Ferracane JL / 1986 / The effect of resin formulation on the degree of conversion and mechanical properties of dental restorative resins / J Biomed Mater Res 20 : 121 ~ 131
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