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수직 진동형 Rheometer를 이용한 복합레진의 유변학적 성질의 측정 : RHEOLOGICAL CHARACTERIZATION OF COMPOSITES USING A VERTICAL OSCILLATION RHEOMETER

DC Field Value Language
dc.contributor.author이인복-
dc.contributor.author조병훈-
dc.contributor.author손호현-
dc.contributor.author이상탁-
dc.contributor.author엄정문-
dc.date.accessioned2010-02-01T09:41:16Z-
dc.date.available2010-02-01T09:41:16Z-
dc.date.issued2004-
dc.identifier.citation대한치과보존학회지 29(6):489-497, 2004en
dc.identifier.issn1225-0864-
dc.identifier.urihttp://uci.or.kr/G100:I100-KOI(KISTI1.1003/JNL.JAKO200414713772864)-
dc.identifier.urihttps://hdl.handle.net/10371/47593-
dc.description.abstractObjective: The purpose of this study was to investigate the viscoelastic properties related to handling characteristics of composite resins, Methods: A custom designed vertical oscillation rheometer (VOR) was used for rheological measurements of composites. The VOR consists of three parts: (1) a measuring unit, (2) a deformation induction unit and (3) a force detecting unit, Two medium viscous composites, Z100 and Z250 and two packable composites, P60 and SureFil were tested. The viscoelastic material function, including complex modulus and phase angle , were measured. A dynamic oscillatory test was used to evaluate the storage modulus (E'), loss modulus (E") and loss tangent () of the composites as a function of frequency () from 0.1 to 20 Hz at . Results: The E' and E" increased with increasing frequency and showed differences in magnitude between brands. The of composites at , normalized to that of Z100, were 2.16 (Z250), 4,80 (P60) and 25.21 (SureFil). The magnitudes and patterns of the change of of composites with increasing frequency were significantly different between brands. The relationships between the complex modulus , the phase angle and the frequency \omega were represented by frequency domain phasor form, . Conclusions: The viscoelasticity of composites that influences handling characteristics is significant different between brands, The VOR is a relatively simple device for dynamic, mechanical analysis of high viscous dental composites. The locus of frequency domain phasor plots in a complex plane is a valuable method of representing the viscoelastic properties of composites.en
dc.description.sponsorship보건복지부 중점연구과제en
dc.language.isokoen
dc.publisher대한치과보존학회en
dc.subjectVORen
dc.subjectViscoelasticityen
dc.subjectCompositeen
dc.subjectComplex modulusen
dc.subjectFrequency domain phasor ploten
dc.title수직 진동형 Rheometer를 이용한 복합레진의 유변학적 성질의 측정en
dc.title.alternativeRHEOLOGICAL CHARACTERIZATION OF COMPOSITES USING A VERTICAL OSCILLATION RHEOMETERen
dc.typeArticleen
dc.contributor.AlternativeAuthorLee, In-Bog-
dc.contributor.AlternativeAuthorCho, Byung-Hoon-
dc.contributor.AlternativeAuthorSon, Ho-Hyun-
dc.contributor.AlternativeAuthorLee, Sang-Tag-
dc.contributor.AlternativeAuthorUm, Chung-Moon-
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