The effect of photo-activated glazes on the microhardness of acrylic baseplate resins

Emmanouil, John; Kavouras, P.; Kehagias, Th.

doi:10.1016/s0300-5712(01)00052-5

Cited by 20 publications

(14 citation statements)

References 11 publications

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“…Knoop hardness test was found to be highly convenient for investigating the relative mechanical properties of the microstructural features 12,13 . Hardness results of three denture materials evaluated in the current study were consistent with their flexural properties.…”

Section: Discussionsupporting

confidence: 76%

“…A 100 gf load was applied through the indenter with a dwell time of 15 seconds. Hardness was measured at five locations on each specimen, and the mean KHN was subsequently determined 12,13 for each specimen. ANOVA followed by Ryan, Einot, Gabriel, and Welsch Q (REGWQ) procedure was used for data analysis ( p = 0.05) using statistical software (SPSS 17.0 for Windows; SPSS, Inc., Chicago, IL).…”

Section: Methodsmentioning

confidence: 99%

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Mechanical Properties of Polyamide Versus Different PMMA Denture Base Materials

Uçar

Akova

Aysan

2012

Journal of Prosthodontics

130

108

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Section: Discussionsupporting

confidence: 76%

Section: Methodsmentioning

confidence: 99%

Mechanical Properties of Polyamide Versus Different PMMA Denture Base Materials

Uçar

Akova

Aysan

2012

Journal of Prosthodontics

130

108

View full text Add to dashboard Cite

show abstract

“…Hardness is also an essential physical property of denture base materials and indicates its resistance to plastic deformation 12,13) . Hardness influences ease of cutting, finishing, and polishing which reduces scratches that can compromise fatigue strength and lead to premature failure.…”

Section: Introductionmentioning

confidence: 99%

“…Finishing and polishing are extremely important to achieve ideal esthetics and good oral hygiene 4,12) . The surface microhardness of acrylic resins is directly related to the longevity of the prosthesis in which the greater the microhardness, the greater its resistance to abrasion and fracture of the denture base material 13,14) . In addition, the microhardness is related to wear of dental materials.…”

Section: Introductionmentioning

confidence: 99%

“…It may be more appropriate for the evaluation of physico-mechanical properties and is considered to be a parameter for the residual monomer content. Therefore, the Vickers hardness test is a simple, effective way to assess the degree of conversion of monomer to polymer during polymerization [13][14][15] . The polymerization reaction of acrylic resins has been initiated by heat, light, auto, microwave, or injection molding [16][17][18] .…”

Section: Introductionmentioning

confidence: 99%

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Effect of polymerization cycles on flexural strengths and microhardness of different denture base materials

Güngör

Gundogdu

Alkurt

et al. 2017

Dental Materials Journal

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The purpose of this study was to evaluate the effect of different polymerization cycles on the flexural strengths and microhardness of two denture base materials (Meliodent and Paladent). Heat-polymerized acrylic resin specimens (65.0 mm long×10.0 mm wide×2.5 mm in height) were prepared using different short and long polymerization cycles. After the specimens had been polymerized, they were stored in distilled water at 37±1°C for 24 h. Flexural strength test was performed at a cross-head speed of 5 mm/min and Vickers microhardness was measured. Data were analyzed with a 1-way analysis of variance followed by Tukey test, and Student t-test (α=0.05). The flexural strengths and microhardness were significantly different between Meliodent and Paladent (p<0.05). Significant differences were found among the polymerization cycles in terms of flexural strengths and microhardness (p<0.05). Polymerization with G cycle may be suggested for Meliodent and H cycle may be suggested for Paladent.

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Effect of the incorporation of cellulose nanocrystals into a microwave‐polymerized denture base resin: Cellulose nanocrystals into a denture base resin

et al. 2021

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The aim is to evaluate the mechanical, physical, and microbiological properties of a denture base resin (Onda-Cryl, microwave-polymerized), after the incorporation of cellulose nanocrystals (CNC). Mixtures of CNC and the resin are prepared at 0% (control group), 0.25%, 0.5%, 0.75% and 1% for the flexural strength (FS) and Vickers hardness (VH) tests. Due to the VH results, surface roughness (SR), surface free energy (SFE), and the single-and dual-species biofilm formation of Candida albicans and methicillin-susceptible Staphylococcus aureus (MSSA) for metabolic activity (XTT assay), antimicrobial activity (CFU mL −1 ) and confocal laser microscopy tests are performed for the groups 0% and 0.75% CNC. Data are statistically analyzed (𝜶 = .05). For FS, CNC at 0.25%, 0.5% and 0.75% are similar to the control. A significant increase of VH is observed at 0.75% and 1%. The 0.75% CNC group is similar to the control for the SFE and SR tests. There is no significant difference between control group and 0.75% CNC group for adhesion and biofilm formation of different microorganisms analyzed for XTT and CFU mL −1 . These results are corroborated by confocal microscopy images. The incorporation of CNC at 0.75% into a microwave-polymerized denture base resin provides promising results regarding VH and does not influence the physical, mechanical, and microbiological properties evaluated. These results suggest that the addition of CNC in the resin does not display surface alterations capable of increasing adhesion or biofilm formation of C. albicans or S. aureus.

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The effect of photo-activated glazes on the microhardness of acrylic baseplate resins

Cited by 20 publications

References 11 publications

Mechanical Properties of Polyamide Versus Different PMMA Denture Base Materials

Mechanical Properties of Polyamide Versus Different PMMA Denture Base Materials

Effect of polymerization cycles on flexural strengths and microhardness of different denture base materials

Effect of the incorporation of cellulose nanocrystals into a microwave‐polymerized denture base resin: Cellulose nanocrystals into a denture base resin

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