The Effect of the Addition of Silanized Nano Titania Fillers on Some Physical and Mechanical Properties of Heat Cured Acrylic Denture Base Materials

2015 ◽  
Vol 27 (1) ◽  
pp. 86-91 ◽  
Author(s):  
Sama A. Alwan ◽  
Shatha S. Alameer
Keyword(s):  
Mechanical Properties ◽  
Physical And Mechanical Properties ◽  
Denture Base ◽  
Base Materials

Comparison of Mechanical Properties of 3D‐Printed, CAD/CAM, and Conventional Denture Base Materials

2020 ◽  
Vol 29 (6) ◽  
pp. 524-528 ◽  
Author(s):  
Vladimir Prpić ◽  
Zdravko Schauperl ◽  
Amir Ćatić ◽  
Nikša Dulčić ◽  
Samir Čimić
Keyword(s):  
Mechanical Properties ◽  
Denture Base ◽  
Base Materials ◽  
Cad Cam ◽  
3D Printed

scholarly journals Effect of repeated disinfections by microwave energy on the physical and mechanical properties of denture base acrylic resins

2009 ◽  
Vol 20 (2) ◽  
pp. 132-137 ◽  
Author(s):  
Rafael Leonardo Xediek Consani ◽  
Douglas Duenhas de Azevedo ◽  
Marcelo Ferraz Mesquita ◽  
Wilson Batista Mendes ◽  
Paulo César Saquy
Keyword(s):  
Mechanical Properties ◽  
Impact Strength ◽  
Flexural Strength ◽  
Physical And Mechanical Properties ◽  
Knoop Hardness ◽  
Microwave Energy ◽  
Bending Test ◽  
Denture Base ◽  
Acrylic Resins ◽  
The Impact

The present study evaluated the effect of repeated simulated microwave disinfection on physical and mechanical properties of Clássico, Onda-Cryl and QC-20 denture base acrylic resins. Aluminum patterns were included in metallic or plastic flasks with dental stone following the traditional packing method. The powder/liquid mixing ratio was established according to the manufacturer's instructions. After water-bath polymerization at 74ºC for 9 h, boiling water for 20 min or microwave energy at 900 W for 10 min, the specimens were deflasked after flask cooling and finished. Each specimen was immersed in 150 mL of distilled water and underwent 5 disinfection cycles in a microwave oven set at 650 W for 3 min. Non-disinfected and disinfected specimens were subjected to the following tets: Knoop hardness test was performed with 25 g load for 10 s, impact strength test was done using the Charpy system with 40 kpcm, and 3-point bending test (flexural strength) was performed at a crosshead speed of 0.5 mm/min until fracture. Data were analyzed statistically by ANOVA and Tukey's test (α= 0.05%). Repeated simulated microwave disinfections decreased the Knoop hardness of Clássico and Onda-Cryl resins and had no effect on the impact strength of QC-20. The flexural strength was similar for all tested resins.

scholarly journals The Mechanical Properties of a Poly(methyl methacrylate) Denture Base Material Modified with Dimethyl Itaconate and Di-n-butyl Itaconate

2015 ◽  
Vol 2015 ◽  
pp. 1-9 ◽  
Author(s):  
Pavle Spasojevic ◽  
Milorad Zrilic ◽  
Vesna Panic ◽  
Dragoslav Stamenkovic ◽  
Sanja Seslija ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Methyl Methacrylate ◽  
Surface Hardness ◽  
Base Material ◽  
Dynamic Mechanical Properties ◽  
Denture Base ◽  
Mean Values ◽  
Poly Methyl Methacrylate ◽  
Base Materials ◽  
Wide Range

This study investigates a wide range of clinically relevant mechanical properties of poly(methyl methacrylate) (PMMA) denture base materials modified with di-methyl itaconate (DMI) and di-n-butyl itaconate (DBI) in order to compare them to a commercial PMMA denture base material. The commercial denture base formulation was modified with DMI and DBI by replacing up to 10 wt% of methyl methacrylate (MMA) monomer. The specimens were prepared by standard bath curing process. The influence of the itaconate content on hardness, impact strength, tensile, and thermal and dynamic mechanical properties was investigated. It is found that the addition of di-n-alkyl itaconates gives homogenous blends that show decreased glass transition temperature, as well as decrease in storage modulus, ultimate tensile strength, and impact fracture resistance with increase in the itaconate content. The mean values of surface hardness show no significant change with the addition of itaconates. The magnitude of the measured values indicates that the poly(methyl methacrylate) (PMMA) denture base material modified with itaconates could be developed into a less toxic, more environmentally and patient friendly product than commercial pure PMMA denture base material.

Effect of water and artificial saliva on mechanical properties of some denture-base materials

1989 ◽  
Vol 5 (6) ◽  
pp. 399-402 ◽  
Author(s):  
M.A.S. Al-Mulla ◽  
W.M. Murphy ◽  
R. Huggett ◽  
S.C. Brooks
Keyword(s):  
Mechanical Properties ◽  
Artificial Saliva ◽  
Denture Base ◽  
Effect Of Water ◽  
Base Materials

scholarly journals The Effect of Denture Cleansers on Color Stability, Water Sorption and Solubility of Stained Denture Base Materials

2018 ◽  
Vol 2 (2) ◽  
pp. 162-173
Author(s):  
Mahabad Saleh ◽  
Salem Salem
Keyword(s):  
Oxalic Acid ◽  
Water Sorption ◽  
Color Change ◽  
Physical And Mechanical Properties ◽  
Color Stability ◽  
Acrylic Resin ◽  
Control Group ◽  
Denture Base ◽  
Base Materials ◽  
Denture Cleansers

Background and Objectives: Denture cleanser is the most widely used method by the patients to maintain clean and healthy dentures but the prolonged use of such cleansers may affect the properties of the denture. The present study was carried out to evaluate the effect of three prepared denture cleansers which were the 4% citric acid, 4% tartaric acid, and 4% oxalic acid in addition to the Protefix a commercially available denture cleansers, on some mechanical and physical properties (color stability, water sorption, and solubility) of acrylic resin (Stellon QC-20) and flexible nylon (Vaplast) denture base materials after immersion in tea solution. Methods: One hundred specimens (100) were prepared in two equal major groups: acrylic resin and Valplast. For each test of the physical and mechanical properties, 50 specimens were prepared, 25 from acrylic resin and 25 from Valplast. Later on, divided into five groups, one group used as a control and immersed in distilled water, and remaining 4 groups used as test groups; by immersing in one of the denture cleansers after staining in tea solutions for 10 days. The effect of denture cleansers on the properties was studied and compared with the control group. Results: Visual examination method showed no color changes for acrylic and slight color change for valplast specimens. Valplast specimens showed higher water sorption and solubility than acrylic. Conclusions: The findings showed that the 4 denture cleansers were equally effective, and did not cause significant alteration in the tested properties. Except acrylic specimens immersed in oxalic acid showed less color stability.

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