Measurement of Poisson's ratio of dental composite restorative materials

Chung, Shin; Yap, Adrian Ujin; Koh, Wee Kiat; Tsai, K.T.; Lim, Chwee Teck

doi:10.1016/j.biomaterials.2003.09.029

Cited by 102 publications

(58 citation statements)

References 11 publications

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“…The AFM images of all indentation tests were studied and the elasticity moduli of all samples were calculated by using Eq. (1) and considering υ =0.31 [44], υ i =0.07 and E i =1140 GPa. The values used for υ i and E i are based on the technical data available from the related Triboscope system.…”

Section: A Modulus Of Elasticitymentioning

confidence: 99%

Mechanical Properties of a Dental Nano-Composite in Moist Media Determined by Nano-Scale Measurement

Karimzadeh¹,

Ayatollahi²,

Shirazi³

2014

IJMMM

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Abstract-The aim of this study was to evaluate the influence of thermocycling on the mechanical properties of a commercial dental nanocomposite by using the nano-indentation experiment. The resin-based nanocomposite contained silica and zirconia nanofillers. Some disk specimens, each with the diameter of 10 mm and the thickness of 4 mm were prepared and the specimens were stored at various environmental conditions. Some of the samples were kept in the ambient condition, other samples were stored in distilled water at room temperature and other ones were thermocycled in distilled water for 1000 cycles between 5°C and 55°C. After preparation of samples, the nano-indentation test was applied on the prepared specimens by Triboscope setup. Then the modulus of elasticity and hardness of the test samples were calculated from the Oliver-Pharr's method using the data obtained from nano-indentation test. The present research showed that the samples stored in distilled water without thermocycling exhibited the highest elasticity modulus when compared to the other samples. In addition, the maximum hardness was observed for thermocycled specimens in distilled water.

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Section: A Modulus Of Elasticitymentioning

confidence: 99%

Mechanical Properties of a Dental Nano-Composite in Moist Media Determined by Nano-Scale Measurement

Karimzadeh¹,

Ayatollahi²,

Shirazi³

2014

IJMMM

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“…The Poisson's ratio of acrylic resin is 0.38 29) , aluminium oxide is 0.38 29) , feldspathic porcelain is 0.35 30) , and composite resin is 0.31 31) , which were averaged from the traditional microhybrid resin-based composites.…”

Section: Hardness and Elastic Modulus Measurementsmentioning

confidence: 99%

In vitro wear resistance, hardness and elastic modulus of artificial denture teet

et al. 2011

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In this study, the wear resistance, hardness, elastic modulus, and the correlations between them of artificial denture teeth at the sub-enamel layer were examined. Four types of tested artificial denture teeth consisted of 3 conventional acrylic resin teeth (Cosmo HXL, Major Dent, and Yamahachi FX), 1 high cross-linked acrylic resin teeth (Trubyte Bioform IPN), 2 composite resin teeth (SR Orthosit PE, and Yamahachi PX), and 1 porcelain teeth (ACE Teeth). The two-body wear test was performed using a custom made pin on disc apparatus. Volume and weight loss were measured. Hardness and elastic modulus were also assessed by using a nanoindentation system. The results suggested wear resistance varied among the denture tooth materials. Wear resistance of high cross-linked acrylic resin teeth was the lowest. A definite relation between wear resistance and mechanical properties of materials could not be found in this study.

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“…If both were to be replaced, two distinct restorative materials should be used and as such, one of them should be chosen as a standard 7,[17][18][19] . Little information is available on the stress analysis of inlays and onlays made from porcelain and composite resins.…”

Section: Introductionmentioning

confidence: 99%

Effects of different ceramic and composite materials on stress distribution in inlay and onlay cavities: 3-D finite element analysis

Yamanel

Çağlar

Gülşahı

et al. 2009

Dental Materials Journal

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To reduce loss of tooth tissue and to improve esthetic results, inlay and onlay restorations are good treatment choices for extensive cavities in posterior teeth. The aim of this paper was to evaluate, by means of three-dimensional finite element analysis, the effects of restorative material and cavity design on stress distribution in the tooth structures and restorative materials. Two different nanofilled composites and two different all-ceramic materials were used in this study. A permanent molar tooth was modeled with enamel and dentin structures. 3-D inlay and onlay cavity designs were created. Von Mises, compressive, and tensile stresses on the restorative materials, core materials, enamel, and dentin were evaluated separately. On the effect of restorative material, results showed that in the case of materials with low elastic moduli, more stress was transferred to the tooth structures. Therefore, compared to the nanofilled composites, the all-ceramic inlay and onlay materials tested transferred less stress to the tooth structures. On the effect of cavity design, the onlay design was more efficacious in protecting the tooth structures than the inlay design.

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Measurement of Poisson's ratio of dental composite restorative materials

Cited by 102 publications

References 11 publications

Mechanical Properties of a Dental Nano-Composite in Moist Media Determined by Nano-Scale Measurement

Mechanical Properties of a Dental Nano-Composite in Moist Media Determined by Nano-Scale Measurement

In vitro wear resistance, hardness and elastic modulus of artificial denture teet

Effects of different ceramic and composite materials on stress distribution in inlay and onlay cavities: 3-D finite element analysis

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