scholarly journals A Color Stability Comparison of Conventional and CAD/CAM Polymethyl Methacrylate Denture Base Materials

2019 ◽  
Vol 53 (2) ◽  
pp. 158-167 ◽  
Author(s):  
Cagatay Dayan ◽  
Melahat Celik Guven ◽  
Burc Gencel ◽  
Canan Bural
Keyword(s):  
Polymethyl Methacrylate ◽  
Color Stability ◽  
Denture Base ◽  
Base Materials ◽  
Cad Cam

scholarly journals Enhancement of the Tensile and the Compression Properties for Heat- Cured Acrylic Resin Denture Base Materials

2018 ◽  
Vol 15 (4) ◽  
pp. 449-454
Author(s):  
Baghdad Science Journal
Keyword(s):  
Polymethyl Methacrylate ◽  
Compression Strength ◽  
Base Material ◽  
Acrylic Resin ◽  
Tensile Tests ◽  
Strength Test ◽  
Denture Base ◽  
Compression Properties ◽  
Base Materials ◽  
Styrene Butadiene

This work aims to investigate the tensile and compression strengths of heat- cured acrylic resin denture base material by adding styrene-butadiene (S- B) to polymethyl methacrylate (PMMA). The most well- known issue in prosthodontic practice is fracture of a denture base. All samples were a blend of (90%, 80%) PMMA and (10%, 20%) S- B powder melted in Oxolane (Tetra hydro furan). These samples were chopped down into specimens of dimensions 100x10x2.5mm to carry out the requirements of tensile tests. The compression strength test specimens were shaped into a cylinder with dimensions of 12.7mm in diameter and 20mm in length. The experimental results show a significant increase in both tensile and compression strengths when compared to control (standard) results for the preparation material.

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

Surface Adherence of Candida albicans to Different Polymethyl Methacrylate Resin Denture Base Materials

2011 ◽  
Vol 2 (3) ◽  
pp. 237-242
Author(s):  
Achut R Devarhubli ◽  
VK Subbarao ◽  
NP Patil
Keyword(s):  
Candida Albicans ◽  
Polymethyl Methacrylate ◽  
Cobalt Alloy ◽  
Denture Base ◽  
Denture Stomatitis ◽  
Base Materials ◽  
Normal Individuals ◽  
Cobalt Chrome Alloy ◽  
Cobalt Chrome

ABSTRACT Over the years researchers have reported on the frequency and distribution of yeast in the oropharynx of apparently normal individuals and those with systemic or mycotic diseases wearing dentures. Few workers have taken into consideration the role played by the legion of denture base materials on the occurrence and progression of denture stomatitis. Hence this study was undertaken with the objective of evaluating the in vitro adherence of Candida albicans to different denture base materials namely reinforced polymethyl methacrylate, Nonreinforced polymethyl methacrylate and Cobalt chrome alloy of which chrome cobalt alloy showed less adherence to candidal cells compared to the two polymethyl methacrylate resins.

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.

scholarly journals New Era in Denture Base Resins: A Review

2013 ◽  
Vol 01 (03) ◽  
pp. 136-143 ◽  
Author(s):  
Shikha Nandal ◽  
Pankaj Ghalaut ◽  
Himanshu Shekhawat ◽  
Manmeet Gulati
Keyword(s):  
Coefficient Of Thermal Expansion ◽  
Phenol Formaldehyde ◽  
Base Material ◽  
Color Stability ◽  
Thermal Shrinkage ◽  
Denture Base ◽  
New Era ◽  
Base Materials ◽  
Acrylic Resins ◽  
Materials Used

AbstractIn past, the materials used for denture bases were vulcanite, celluloid & phenol formaldehyde. Acrylic resins were introduced to dentistry in 1930's. There are certain limitations of acrylics like residual monomer allergy, poor mechanical strength, low fatigue strength, brittle on impact, poor conductors of heat, low hardness, high coefficient of thermal expansion, thermal shrinkage, poor color stability of self-cured resins, porosity, crazing, warpage, poor adhesion to metal and porcelain and requirement of mechanical retention. But still they are the most widely used denture base materials till date. But recently there has been much advancement in the field of denture base resins to overcome their drawbacks and to obtain an ideal denture base material. This article reviews the various advancements in the field of denture base resins.

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