Influence of Reinforcing Agents on the Mechanical Properties of Denture Base Resin: A Systematic Review

Knowledge about the influence of fillers in denture base resin is vague. This systematic review aimed to report the reinforcing effect of fillers on the mechanical properties of denture base resin by following PRISMA guidelines. Two electronic databases (Pubmed/Medline & Web of Science) were searched for articles using the keywords: fibers in denture base, fillers in denture base, and reinforcement of denture base. Laboratory studies complying with the inclusion criteria were reviewed according to the set protocol. The established focus question was: “Do reinforcing fillers positively influence the mechanical properties of polymethyl methacrylate (PMMA) heat polymerized denture base material?” A total of twenty-nine relevant papers qualified for final inclusion. Of these, 24 were determined to have a moderate risk of bias. Micron or nano-sized metal/metal oxides particles and glass fibers were the frequently used reinforcing agents. The trend of evaluating fractural strength (FS) was common. Most of the studies limited the use of reinforcing agents up to 5 wt.%. FS, fracture toughness (FT), and impact strength (IS) tend to increase if the fillers are chemically bonded and well-dispersed in denture base resin. Though fillers with a higher elastic modulus increase the hardness of the reinforced denture base resin, they compromise other mechanical properties. Well-dispersed lower filler loading PMMA denture base resin can enhance the FS, FT, and other related mechanical properties.

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Mechanical Properties of Reinforced Denture Base Resin: The Effect of Position and the Number of Woven Glass Fibers.

Dental Materials Journal ◽

10.4012/dmj.21.261 ◽

2002 ◽

Vol 21 (3) ◽

pp. 261-269 ◽

Cited By ~ 5

Author(s):

Takahito KANIE ◽

Hiroyuki ARIKAWA ◽

Koichi FUJII ◽

Seiji BAN

Keyword(s):

Mechanical Properties ◽

Glass Fibers ◽

Denture Base ◽

Base Resin ◽

Denture Base Resin

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Color Stability and Surface Properties of PMMA/ZrO2 Nanocomposite Denture Base Material after Using Denture Cleanser

International Journal of Biomaterials ◽

10.1155/2021/6668577 ◽

2021 ◽

Vol 2021 ◽

pp. 1-10

Author(s):

Mohammed M. Gad ◽

Reem Abualsaud ◽

Shaimaa M. Fouda ◽

Ahmed Rahoma ◽

Ahmad M. Al-Thobity ◽

...

Keyword(s):

Surface Roughness ◽

Adverse Effects ◽

Base Material ◽

Color Stability ◽

Zro2 Nanoparticles ◽

Distilled Water ◽

Denture Base ◽

Base Resin ◽

Denture Cleansers ◽

Denture Base Resin

Statement of Problem. Novel polymethyl methacrylate (PMMA) containing zirconium dioxide nanoparticles (nano-ZrO2) was suggested as a denture base material but there is a lack of information regarding denture cleanser effects. Objectives. This study aimed to evaluate denture cleanser effects on color stability, surface roughness, and hardness of PMMA denture base resin reinforced with nano-ZrO2. Materials and Methods. A total of 420 specimens were fabricated of unreinforced and nano-ZrO2 reinforced acrylic resin at 2.5% and 5%, resulting in 3 main groups. These groups were further subdivided (n = 10) according to immersion solution (distilled water, Corega, sodium hypochlorite, and Renew) and immersion duration. Surface roughness, hardness, and color were measured at baseline (2 days-T0) in distilled water and then after 180 and 365 days of immersion (T1 & T2) in water or denture cleansing solutions. Data was collected and analyzed using two-way ANOVA followed by Bonferroni post hoc test (α = 0.05). Results. Surface roughness increased significantly after denture cleanser immersion of unmodified and nano-ZrO2-modified PMMA materials while hardness decreased ( P < 0.001 ). The denture cleansers significantly affected the color of both PMMA denture bases ( P < 0.001 ). The immersion time in denture cleansers significantly affected all tested properties ( P < 0.001 ). Within denture cleansers, NaOCl showed the highest adverse effects ( P < 0.05 ) while Renew showed the least adverse effects. Conclusion. Denture cleansers can significantly result in color change and alter the surface roughness and hardness of denture base resin even with ZrO2 nanoparticles addition. Therefore, they should be carefully used.

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Effects of SiO2 Incorporation on the Flexural Properties of a Denture Base Resin: An In Vitro Study

European Journal of Dentistry ◽

10.1055/s-0041-1732806 ◽

2021 ◽

Author(s):

Sara T. Alzayyat ◽

Ghadah A. Almutiri ◽

Jawhara K. Aljandan ◽

Raneem M. Algarzai ◽

Soban Q. Khan ◽

...

Keyword(s):

Elastic Modulus ◽

Flexural Strength ◽

Testing Machine ◽

Base Material ◽

Bending Test ◽

Control Group ◽

Denture Base ◽

Nano Sio2 ◽

Base Resin ◽

Denture Base Resin

Abstract Objective The aim of this study was to evaluate the effects of the addition of low-silicon dioxide nanoparticles (nano-SiO2) on the flexural strength and elastic modulus of polymethyl methacrylate (PMMA) denture base material. Materials and Methods A total of 50 rectangular acrylic specimens (65 × 10 × 2.5 mm3) were fabricated from heat-polymerized acrylic resin. In accordance with the amount of nano-SiO2, specimens were divided into the following five groups (n = 10 per group): a control group with no added SiO2, and four test groups modified with 0.05, 0.25, 0.5, and 1.0 wt% nano-SiO2 of acrylic powder. Flexural strength and elastic modulus were measured by using a 3-point bending test with a universal testing machine. A scanning electron microscope was used for fracture surface analyses. Data analyses were conducted through analysis of variance and Tukey’s post hoc test (α = 0.05). Results Compared with the control group, flexural strength and modulus of elasticity tended to significantly increase (p ˂ 0.001) with the incorporation of nano-SiO2. In between the reinforced groups, the flexural strength significantly decreased (p ˂ 0.001) as the concentrations increased from 0.25 to 1.0%, with the 1.0% group showing the lowest value. Furthermore, the elastic modulus significantly increased (p ˂ 0.001) at 0.05% followed by 1.0%, 0.25%, 0.5%, and least in control group. Conclusion A low nano-SiO2 addition increased the flexural strength and elastic modulus of a PMMA denture base resin.

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Effect of titanium dioxide nanoparticles on mechanical properties of denture base resin: an in vitro study

Al-Azhar Journal of Dental Science ◽

10.21608/ajdsm.2017.107816 ◽

2017 ◽

Vol 20 (3) ◽

pp. 261-265

Keyword(s):

Mechanical Properties ◽

Titanium Dioxide ◽

Titanium Dioxide Nanoparticles ◽

In Vitro Study ◽

Vitro Study ◽

Denture Base ◽

Base Resin ◽

Denture Base Resin

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Mechanical properties and biocompatibility of experimental 3D printing denture base resin

Korean Journal of Dental Materials ◽

10.14815/kjdm.2019.46.4.253 ◽

2019 ◽

Vol 46 (4) ◽

pp. 253-262 ◽

Cited By ~ 1

Author(s):

Da-Ryeong Park ◽

Ji-Myung Bae

Keyword(s):

Mechanical Properties ◽

3D Printing ◽

Denture Base ◽

Base Resin ◽

Denture Base Resin

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Effect of heat treatment of polymethyl methacrylate powder on mechanical properties of denture base resin

Journal of the Mechanical Behavior of Biomedical Materials ◽

10.1016/j.jmbbm.2014.07.012 ◽

2014 ◽

Vol 39 ◽

pp. 73-78 ◽

Cited By ~ 9

Author(s):

Tomohiro Kawaguchi ◽

Lippo V.J. Lassila ◽

Hirono Sasaki ◽

Yutaka Takahashi ◽

Pekka K. Vallittu

Keyword(s):

Mechanical Properties ◽

Heat Treatment ◽

Polymethyl Methacrylate ◽

Denture Base ◽

Base Resin ◽

Denture Base Resin

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Effects of Fiber-Resin Interface Property on Shape Recovery and Mechanical Properties of Denture-Base-Resin Matrix Smart Composite

Materials Science Forum ◽

10.4028/www.scientific.net/msf.539-543.3279 ◽

2007 ◽

Vol 539-543 ◽

pp. 3279-3284 ◽

Cited By ~ 2

Author(s):

Kenichi Hamada ◽

Fumiaki Kawano ◽

Kenzo Asaoka

Keyword(s):

Shape Change ◽

Base Material ◽

Bending Test ◽

Resin Matrix ◽

Niti Shape Memory Alloy ◽

Interface Debonding ◽

Denture Base ◽

Pull Out ◽

Base Resin ◽

Denture Base Resin

NiTi shape memory alloy fiber-embedded denture-base-resin matrix smart composites were developed as a new denture base material for a “smart denture”, whose shape could be recovered simply by heating after fracture. Three types of fiber surface treatment were applied for the composites and their properties were evaluated by the fiber-pull-out test and bending test, and shape change after repair was examined. A high interface debonding strength increased the fracture strain but did not affect bending strength, and a low interface sliding strength minimized shape change after repair. These results indicate that the fiber-matrix interface with a strong bonding but easy sliding after debonding could improve the preciseness of “smart repair”.

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