Residual monomer content and its release into water from denture base materials

Vallittu, Pekka K.; Miettinen, Varpu M.; Alakuijala, P.

doi:10.1016/0109-5641(95)80031-x

Cited by 174 publications

(183 citation statements)

References 21 publications

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“…Secondly, unreacted monomer could act like a plasticizer in denture base polymer. After immersion, unreacted monomer could leach out into the water resulted in increasing the stiffness of the specimens 33) . The findings of this study demonstrated that heatcured acrylic resin contained 20 mass% of silanized G018-090 filler could sustainably release sufficient amount of fluoride for preventing the demineralization of sound enamel, while the mechanical properties of the acrylic resin could be maintained.…”

Section: Discussionmentioning

confidence: 99%

The pH effect of solvent in silanization on fluoride released and mechanical properties of heat-cured acrylic resin containing fluoride-releasing filler

et al. 2016

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This study aimed to evaluate the effect of an acidic-adjusted pH of solvent in silanization on the amount of fluoride released and mechanical properties of heat-cured acrylic resin containing a silanized fluoride-releasing filler. The experimental groups were divided into 4 groups; non-silanized, acidic-adjusted pH, non-adjusted pH, and no filler as control. For fluoride measurement, each specimen was placed in deionized water which was changed every day for 7 days, every week for 7 weeks and measured. The flexural strength and flexural modulus were evaluated after aging for 48 h, 1, and 2 months. Two-way ANOVA indicated significant differences among groups, storage times, and its interaction in fluoride measurement and flexural modulus. For flexural strength, there was significant difference only among groups. Acidic-adjusted pH of solvent in silanization enhanced the amount of fluoride released from acrylic resin, while non-adjusted pH of solvent exhibited better flexural strength of acrylic resin.

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Section: Discussionmentioning

confidence: 99%

The pH effect of solvent in silanization on fluoride released and mechanical properties of heat-cured acrylic resin containing fluoride-releasing filler

et al. 2016

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“…[10][11][12] High-performance liquid chromatography (HPLC) was developed to analyze all components such as eluates from resins. [13][14][15] Spectroscopic analysis, 16 and wet chemical analysis 17 have been used. Differential scanning calorimetry, which is based on the enthalpy of the exotherm for setting, has been used by many researchers.…”

Section: Discussionmentioning

confidence: 99%

Degree of conversion of bis-acrylic based provisional crown and fixed partial denture materials

Kim

Watts

2008

J Korean Acad Prosthodont

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“…Slow leaching of excess monomer into saliva can cause local irritation and development of hypersensitivity 12) . The level of residual monomer is related to the DC and polymerisation which can be achieved using chemical activators in autopolymerising acrylic resin 13,14) . Consequently, DC is a critical parameter that influences the biocompatibility and the mechanical and physical properties of dental polymers 12,15) and assessing the DC is a valuable tool for evaluating the mechanical properties of a polymer and its clinical performance.…”

Section: Introductionmentioning

confidence: 99%

“…Various techniques have been employed to measure the level of polymerisation and DC including high performance liquid chromatography (HPLC), spectroscopy and high precision measurement of the extent of polymerisation shrinkage 14,16) . Spectroscopic analysis is extensively used in dentistry given that it is a specific, economic and adequately sensitive technique and provides a reliable quantitative measure to assess conversion 16) .…”

Section: Introductionmentioning

confidence: 99%

Impregnation with antimicrobials has an impact on degree of conversion and colour stability of acrylic liner

et al. 2012

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This study investigated the impact of impregnation of a poly(ethyl methacrylate) /tetrahydrofurfuryl methacrylate (PEM/THFM) polymer with chlorhexidine or fluconazole on the degree of conversion (DC) and colour stability (ΔE). The DC of uncured (0 h) and cured (24 h) samples was analysed by Fourier transform infrared spectroscopy (FTIR) and colour stability was analysed colorimetrically. The DC percentage of the control samples was significantly greater than those containing chlorhexidine and fluconazole (p≤0.05). The control discs exhibited only slight colour change compared to the impregnated discs which showed marked colour change (p≤0.05). A strong negative correlation between the extent of colour change and the degree of conversion was detected (r=0.97). The DC and colour stability were influenced by the addition of chlorhexidine or fluconazole. However, the final values were comparable to other commonly used acrylic liners and within acceptable ranges. PEM/THFM can be considered as a biocompatible drug delivery system.

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Residual monomer content and its release into water from denture base materials

Cited by 174 publications

References 21 publications

The pH effect of solvent in silanization on fluoride released and mechanical properties of heat-cured acrylic resin containing fluoride-releasing filler

The pH effect of solvent in silanization on fluoride released and mechanical properties of heat-cured acrylic resin containing fluoride-releasing filler

Degree of conversion of bis-acrylic based provisional crown and fixed partial denture materials

Impregnation with antimicrobials has an impact on degree of conversion and colour stability of acrylic liner

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