Denture base reinforcing materials - A review

Prajwala, N; Kumar, C Ravi; Sujesh, M; Rao, D. Chalapathi; Pavani, L

doi:10.18231/j.aprd.2020.014

Cited by 11 publications

(14 citation statements)

References 15 publications

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“…This material possesses many advantages such as low cost, ease in fabrication, polishing, biocompatibility, satisfactory aesthetics, low density, and colour matching ability [1,8,9]. In contrast, the associated disadvantages, which include insufficient hardness, flexural strength, toughness, and elastic modulus, make this material highly prone to fracture and cause clinical failure [10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

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

et al. 2021

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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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Section: Introductionmentioning

confidence: 99%

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

et al. 2021

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“…According to the fact that fiber reinforcement leads to enhance the strength of polymer matrix [12]. Jawad K. investigated the qualities of PMMA reinforced with Siwak fibers and found that the tensile properties improved.…”

Section: Introductionmentioning

confidence: 99%

“…Statistically ANOVA and Bonferroni tests showed significant differences among the groups [17]. Also, different type of nanotube were utilized to improve the dental material properties such as; Carbon nanotubes (CNTs), TiO2 nanotubes, ZrO2 nanotubes and halloysite nanotubes (HNT) Copper nanotube CNTs used due to the advance properties; CNTs specially used because it considered strong, resilient, and lightweight [12,18].…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Physical Characterization of PMMA/PP and PMMA/ PAN Composites for Denture Applications

Sharhan¹,

Rasheed²,

Oleiwi³

2021

JASN

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This study involves on manufacture of denture base resin with advanced physical properties through the addition of two type of synthetic fibers used as reinforcing materials polypropylene (PP) and Poly acrylonitrile (PAN). In this research, groups of three samples of both PMMA/PP and PMMA/PAN composites were prepared with the selected fiber weight ratios of 1.5, 3.5, 5.5 and 7.5 %Wt. Physical properties such as water absorption, thermal conductivity and density were evaluated under normal conditions. The chemical bond structure was also investigated for all samples using FTIR test. The results showed that when fibers ratio increased until 7.5 %Wt., the water absorption increases, as well for each fiber which was over 0.6% compared to the 0.3% of the neat sample. A noticeable decrease in the thermal conductivity property from 0.33 W/m.K for PMMA/PP and 0.24 W/m.K for PMMA/PAN comparing to 0.46 W/m. K of the neat polymer was revealed. As for the density results, it was found that when the fibers ratios were increased, the sample density slightly decreased and reached 1.09 g/cm 3 for PMMA/PP and 1.1 g/cm 3 for PMMA/PAN at the maximum fibers rate. FTIR results indicated there was no new peaks appeared after reinforcement with both fibers. This could refer to the good physical bond between the mixtures, no new material formed.

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“…Generally, the conventional heat-polymerized polymethyl methacrylate [PMMA] denture base material fractured when loaded under flexural or impact strengths that exceeded its flexural or toughness capacity (1,6) . The insufficient flexural strength, flexural modulus, and toughness are determinable for the clinical success of the conventional acrylic denture base (7,8) . So, various clinical and in vitro attempts were made to overcome these mechanical drawbacks (6,7) .…”

Section: Introductionmentioning

confidence: 99%

Colour Stability, Flexural Modulus, and Toughness of PMMA Denture Base Resin Modified with Silver Nano-Particles and Henna Fillers

Fayad

Alwafi²,

Abdelrahim

et al. 2022

Al-Azhar Journal of Dental Science

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Objective: This study aimed to evaluate the influence of incorporation of silver nano-particles (Ag-NPs) and Henna on colour changes, flexural modulus, and toughness of the heat-polymerized polymethyl methacrylate ( PMMA ) denture base material. Materials and Methods: A total of 60 conventional heat-polymerized PMMA acrylic resin samples were fabricated with a conventional compression-moulded technique and used in this study. Modified acrylic resin samples were prepared by addition of Ag-NPs (0.5 wt.%), and Henna fillers (1wt.%), to the powder of PMMA resin. For colour change evaluation, a total of thirty disc (20x3mm) samples (n=10 samples for each type of acrylic resin) were used. While for the transverse strength test, a total of 30 acrylic samples (65×10×3 mm) ( n=10 samples for each type of acrylic resin) . The dimensions of samples were selected according to the American Dental Association (ADA) specifications #12. Results: The incorporation of Ag-NPs and Henna fillers resulted in significant colour changes in PMMA acrylic resin. At the same time, both added fillers resulted in a significant decrease in the flexural modulus and toughness of the PMMA acrylic resin. Conclusion: Incorporating Ag-NPs and Henna fillers adversely affect the colour of the PMMA and its flexural modulus and toughness.

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Denture base reinforcing materials - A review

Cited by 11 publications

References 15 publications

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

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

Synthesis and Physical Characterization of PMMA/PP and PMMA/ PAN Composites for Denture Applications

Colour Stability, Flexural Modulus, and Toughness of PMMA Denture Base Resin Modified with Silver Nano-Particles and Henna Fillers

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