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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2016.1
- 수록면
- 271 - 277 (7page)
이용수
초록· 키워드
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Objectives
In this study, we evaluated the influence of different radiant exposures provided by single-peak and polywave light-curing units (LCUs) on the degree of conversion (DC) and the mechanical properties of resin cements.
Materials and Methods
Six experimental groups were established for each cement (RelyX ARC, 3M ESPE; LuxaCore Dual, Ivoclar Vivadent; Variolink, DMG), according to the different radiant exposures (5, 10, and 20 J/cm2) and two LCUs (single-peak and polywave). The specimens were made (7 mm in length × 2 mm in width × 1 mm in height) using silicone molds. After 24 hours of preparation, DC measurement was performed using Fourier transform infrared spectrometry. The same specimens were used for the evaluation of mechanical properties (flexural strength, FS; elastic modulus, E) by a three-point bending test. Data were assessed for normality, after which two-way analysis of variance (ANOVA) and post hoc Tukey's test were performed.
Results
No properties of the Variolink cement were influenced by any of the considered experimental conditions. In the case of the RelyX ARC cement, DC was higher when polywave LCU was used; FS and E were not influenced by the conditions evaluated. The LuxaCore cement showed greater sensitivity to the different protocols.
Conclusions
On the basis of these results, both the spectrum of light emitted and the radiant exposure used could affect the properties of resin cements. However, the influence was material-dependent.
목차
등록된 정보가 없습니다.
참고문헌 (32)
참고문헌 신청
Carvalho AP / 2005 / Analysis of the microtensile bond strength to enamel of two adhesive systems polymerized by halogen light or LED / Braz Oral Res 19:307~311
Dunn WJ / 2002 / Polymerization of orthodontic resin cement with light emitting diode curing units / Am J Orthod Dentofacial Orthop 122:236~241
Arrais CA / 2007 / Degree of conversion of adhesive systems light-cured by LED and halogen light / Braz Dent J 18:54~59
Jiménez-Planas A / 2008 / Developments in polymerization lamps / Quintessence Int 39:e74~e84
Jandt KD / 2013 / A brief history of LED photopolymerization / Dent Mater 29:605~617
Dunn WJ / 2002 / Polymerization of orthodontic resin cement with light emitting diode curing units / Am J Orthod Dentofacial Orthop 122:236~241
Arrais CA / 2007 / Degree of conversion of adhesive systems light-cured by LED and halogen light / Braz Dent J 18:54~59
Jiménez-Planas A / 2008 / Developments in polymerization lamps / Quintessence Int 39:e74~e84
Jandt KD / 2013 / A brief history of LED photopolymerization / Dent Mater 29:605~617
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