A New Approach to Cure and Reinforce Cold-Cured Acrylics

Y.C. So; J.K.-H. Tsoi; J.P. Matinlinna

doi:10.1007/s12633-012-9124-0

A New Approach to Cure and Reinforce Cold-Cured Acrylics

Y.C. So, J.K.-H. Tsoi, J.P. Matinlinna

Division of Dentistry (L5)

Research output: Contribution to journal › Article › peer-review

Abstract

Purpose: The low degree of polymerization of cold-cured acrylics has resulted in inferior mechanical properties and fracture vulnerability in orthodontics removable appliances.

Methods: In this study, the effect of reinforcement by various concentrations of chopped E-glass fibers (0%, 1%, 2%, 3% and 5% by weight of resin powder) and post-curing microwave irradiation (800 W for 3 min) on the flexural strength of cold-cured acrylics was evaluated at various storage conditions (at room temperature for 1 day and 7 days; at water storage for 7, 14 and 30 days).

Results: The data was analyzed by using 1-way and 2-way ANOVA, and a Tukey post hoc test (α = .05). The specimens with chopped E-glass fibers treated with post-curing microwave irradiation significantly increased the flexural strength of cold-cured PMMA. The optimal concentration might be 2% fibers under irradiation.

Conclusions: The exhibited reinforcement effect lasted in a consistent trend for 14 days in water storage. A new fiber-acrylic mixing method was also developed.

Original language	English
Pages (from-to)	209–220
Number of pages	12
Journal	Silicon
Volume	4
Issue number	3
Early online date	24 May 2012
DOIs	https://doi.org/10.1007/s12633-012-9124-0
Publication status	Published - Jul 2012

Keywords

denture based materials
cold-cured acrylics
e-glass fibers
microwave irradiation
fiber-acrylic mixing method

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10.1007/s12633-012-9124-0

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title = "A New Approach to Cure and Reinforce Cold-Cured Acrylics",

abstract = "Purpose: The low degree of polymerization of cold-cured acrylics has resulted in inferior mechanical properties and fracture vulnerability in orthodontics removable appliances.Methods: In this study, the effect of reinforcement by various concentrations of chopped E-glass fibers (0%, 1%, 2%, 3% and 5% by weight of resin powder) and post-curing microwave irradiation (800 W for 3 min) on the flexural strength of cold-cured acrylics was evaluated at various storage conditions (at room temperature for 1 day and 7 days; at water storage for 7, 14 and 30 days).Results: The data was analyzed by using 1-way and 2-way ANOVA, and a Tukey post hoc test (α = .05). The specimens with chopped E-glass fibers treated with post-curing microwave irradiation significantly increased the flexural strength of cold-cured PMMA. The optimal concentration might be 2% fibers under irradiation.Conclusions: The exhibited reinforcement effect lasted in a consistent trend for 14 days in water storage. A new fiber-acrylic mixing method was also developed.",

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author = "Y.C. So and J.K.-H. Tsoi and J.P. Matinlinna",

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T1 - A New Approach to Cure and Reinforce Cold-Cured Acrylics

AU - So, Y.C.

AU - Tsoi, J.K.-H.

AU - Matinlinna, J.P.

PY - 2012/7

Y1 - 2012/7

N2 - Purpose: The low degree of polymerization of cold-cured acrylics has resulted in inferior mechanical properties and fracture vulnerability in orthodontics removable appliances.Methods: In this study, the effect of reinforcement by various concentrations of chopped E-glass fibers (0%, 1%, 2%, 3% and 5% by weight of resin powder) and post-curing microwave irradiation (800 W for 3 min) on the flexural strength of cold-cured acrylics was evaluated at various storage conditions (at room temperature for 1 day and 7 days; at water storage for 7, 14 and 30 days).Results: The data was analyzed by using 1-way and 2-way ANOVA, and a Tukey post hoc test (α = .05). The specimens with chopped E-glass fibers treated with post-curing microwave irradiation significantly increased the flexural strength of cold-cured PMMA. The optimal concentration might be 2% fibers under irradiation.Conclusions: The exhibited reinforcement effect lasted in a consistent trend for 14 days in water storage. A new fiber-acrylic mixing method was also developed.

AB - Purpose: The low degree of polymerization of cold-cured acrylics has resulted in inferior mechanical properties and fracture vulnerability in orthodontics removable appliances.Methods: In this study, the effect of reinforcement by various concentrations of chopped E-glass fibers (0%, 1%, 2%, 3% and 5% by weight of resin powder) and post-curing microwave irradiation (800 W for 3 min) on the flexural strength of cold-cured acrylics was evaluated at various storage conditions (at room temperature for 1 day and 7 days; at water storage for 7, 14 and 30 days).Results: The data was analyzed by using 1-way and 2-way ANOVA, and a Tukey post hoc test (α = .05). The specimens with chopped E-glass fibers treated with post-curing microwave irradiation significantly increased the flexural strength of cold-cured PMMA. The optimal concentration might be 2% fibers under irradiation.Conclusions: The exhibited reinforcement effect lasted in a consistent trend for 14 days in water storage. A new fiber-acrylic mixing method was also developed.

KW - denture based materials

KW - cold-cured acrylics

KW - e-glass fibers

KW - microwave irradiation

KW - fiber-acrylic mixing method

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U2 - 10.1007/s12633-012-9124-0

DO - 10.1007/s12633-012-9124-0

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VL - 4

SP - 209

EP - 220

JO - Silicon

JF - Silicon

IS - 3

ER -

A New Approach to Cure and Reinforce Cold-Cured Acrylics

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Keywords

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