Effects of nanobarium titanate on physical and mechanical properties of poly(methyl methacrylate) denture base nanocomposites

Elshereksi, Nidal W.; Muchtar, A.; Ch, Azhari

doi:10.1177/0967391120926442

Cited by 9 publications

(8 citation statements)

References 37 publications

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“…For instance, PMMA absorbs water, which may compromise its physical and mechanical properties while in use [ 63 , 64 ] and make it vulnerable to failure under cyclic loading [ 65 ]. Currently, a number of researchers are focused on mechanical reinforcement [ 30 , 38 , 51 , 53 , 66 , 67 , 68 , 69 , 70 , 71 , 72 , 73 , 74 ] and chemical modification [ 53 , 75 , 76 ] of PMMA to overcome its drawbacks and improve its properties, which have been reviewed in this article. In order to better understand and interpret these recent modifications, it is important to understand the chemistry, types, and properties of PMMA materials.…”

Section: Historical Background and Developmentmentioning

confidence: 99%

“…The PMMA-based materials should have certain desired properties depending on the biological application. Accordingly, PMMA materials have been extensively modified and explored in relation to various chemical [ 77 , 99 ], biological [ 77 , 100 , 101 , 102 ], physical [ 70 , 77 , 103 ], and mechanical properties [ 66 , 68 , 70 , 100 , 103 , 104 , 105 ]. Primarily, it is important to understand the ideal or desired properties of PMMA materials for denture base applications ( Figure 3 ).…”

Section: Properties Of Pmmamentioning

confidence: 99%

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Prosthodontic Applications of Polymethyl Methacrylate (PMMA): An Update

2020

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A wide range of polymers are commonly used for various applications in prosthodontics. Polymethyl methacrylate (PMMA) is commonly used for prosthetic dental applications, including the fabrication of artificial teeth, denture bases, dentures, obturators, orthodontic retainers, temporary or provisional crowns, and for the repair of dental prostheses. Additional dental applications of PMMA include occlusal splints, printed or milled casts, dies for treatment planning, and the embedding of tooth specimens for research purposes. The unique properties of PMMA, such as its low density, aesthetics, cost-effectiveness, ease of manipulation, and tailorable physical and mechanical properties, make it a suitable and popular biomaterial for these dental applications. To further improve the properties (thermal properties, water sorption, solubility, impact strength, flexural strength) of PMMA, several chemical modifications and mechanical reinforcement techniques using various types of fibers, nanoparticles, and nanotubes have been reported recently. The present article comprehensively reviews various aspects and properties of PMMA biomaterials, mainly for prosthodontic applications. In addition, recent updates and modifications to enhance the physical and mechanical properties of PMMA are also discussed.

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Section: Historical Background and Developmentmentioning

confidence: 99%

Section: Properties Of Pmmamentioning

confidence: 99%

Prosthodontic Applications of Polymethyl Methacrylate (PMMA): An Update

2020

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“…It can interact with tissues, contributing to the development of cancer or cause tissue burns. Moreover, (meth)acrylate monomers can cause allergic reactions while aromatic amines used as co-initiators can be carcinogenic and mutagenic, except that dental composites based on cross-linking monomers show the problem of 2-14% volumetric shrinkage during the photopolymerization process [54,55].…”

Section: Of 22mentioning

confidence: 99%

Acenaphthoquinoxaline Derivatives as Dental Photoinitiators of Acrylates Polymerization

Pyszka

Jędrzejewska

2021

Materials

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A series of dyes based on the acenaphthoquinoxaline skeleton was synthesized. Their structure was modified by introducing electron-withdrawing and electron-donating groups, increasing the number of conjugated double bonds and the number and position of nitrogen atoms, as well as the arrangement of aromatic rings (linear or angular). The dyes were investigated as a component in the photoinitiating systems of radical polymerization for a potential application in dentistry. They acted as the primary absorber of visible light and the acceptor of an electron, which was generated from a second component being an electron donor. Thus, the radicals were generated by the photoinduced intermolecular electron transfer (PET) process. Electron donors used differed in the type of heteroatom, i.e., O, S and N and the number and position of methoxy substituents. To test the ability to initiate the polymerization reaction by photoinduced hydrogen atom transfer, we used 2-mercaptobenzoxazole as a co-initiator. The effectiveness of the photoinitiating systems clearly depends on both the modified acenaphthoquinocaline structure and the type of co-initiator. The lower amount of heat released during the chain reaction and the polymerization rate comparable to this achieved for the photoinitiator traditionally used in dentistry (camphorquinone) indicates that the studied dyes may be valuable in this field.

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“…Denture base resin is typically constructed by polymerizing pre-polymerized PMMA (Figure 2) mixed with methyl methacrylate (MMA) monomer. Some products have been produced; nevertheless, attempts have been taken to enhance their physical and mechanical characteristics [9,35].…”

Section: Modified Acrylic Materialsmentioning

confidence: 99%

“…Also, the repairs of detached teeth and midline breakages were 30% and 29%, respectively [8]. One technique is to enhance the mechanical performance of PMMA via the incorporation of reinforcing additives [4,5,9]. Other approaches contain modification of the PMMA chemical structure via copolymerization [10][11][12] or the addition of chemical solutions such as cross-linking agents [13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Protocols of improvements for PMMA denture base resin: An overview

et al. 2022

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Polymethyl methacrylate (PMMA) is a polymer that is expansively employed in denture base construction due to its low cost, aesthetics, lightweight, reparability, and processability. Nevertheless, this material is not ideal to fulfill the mechanical and physical characteristics of dental restorations. Despite the popularity of the thermal polymerization method, the main shortcoming is the prolonged curing period. Thus, correctly selecting a polymerization cycle and post-polymerization treatment is needed to achieve promising outcomes. In autoclave polymerization, pressure plays a crucial function in accelerating the initial polymerization as well as decreasing the pores and remaining monomer level, thereby improving the flexural strength. Besides, ultrasound can speed up conventional chemical reactions by generating intensive local heating, higher pressures, and very short periods. This article reviews the currently employed protocols for enhancing PMMA denture base polymers and discusses the properties of modified acrylic materials. Moreover, this work explores the effects of the post-polymerization treatment, autoclave process, ultrasonic treatment, and gamma irradiation on the PMMA performance, as well as the positive influence of these treatments on functional properties and clinical longevity.

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Effects of nanobarium titanate on physical and mechanical properties of poly(methyl methacrylate) denture base nanocomposites

Cited by 9 publications

References 37 publications

Prosthodontic Applications of Polymethyl Methacrylate (PMMA): An Update

Prosthodontic Applications of Polymethyl Methacrylate (PMMA): An Update

Acenaphthoquinoxaline Derivatives as Dental Photoinitiators of Acrylates Polymerization

Protocols of improvements for PMMA denture base resin: An overview

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