Acrylic denture base materials

Nejatian, Touraj; Pezeshki, Sajjad; Syed, Azeem Ul Yaqin

doi:10.1016/b978-0-08-102476-8.00005-0

Cited by 13 publications

(18 citation statements)

References 62 publications

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“…PMMA powder contains PMMA, benzoyl peroxide initiator, a plasticizer (dibutyl phthalate), opacifiers (titanium and zinc oxides), fibers, and pigments or dyes. The liquid component contains methyl methacrylate (MMA) monomer, ethylene glycol dimethacrylate as a cross-linking agent, and hydroquinone as an inhibitor [ 10 ]. The polymerization reaction starts upon mixing of both components and requires heat energy (such as from a water bath) to activate the initiator.…”

Section: Chemistry and Types Of Pmmamentioning

confidence: 99%

“…However, light-cured PMMA materials are not used commonly due to their drawbacks, such as their limited curing depth, technique sensitivity, and cost [ 87 ]. The mechanical properties of light-cured PMMA materials are slightly inferior to conventional PMMA [ 94 ], and therefore their applications are limited to relining and repair of denture bases [ 10 ], in addition to fabrication of custom trays and base plates for complete dentures. It is obvious that each type of PMMA material differs in terms of its composition, polymerization, benefits, and drawbacks.…”

Section: Chemistry and Types Of Pmmamentioning

confidence: 99%

“…The resilient liners are elastic and composed of silicone elastomers [ 159 , 160 , 161 ], which act as shock absorber [ 161 ]. Both heat- and cold-cured PMMA materials are used for the relining of dentures (hard relining), using the old denture as an impression tray [ 10 ]. Heat-cured PMMA liners are usually supplied in the form of powder and liquid modified with the addition of plasticizers to reduce the glass transition temperature by to lubricating the polymer chains.…”

Section: Applications Of Pmmamentioning

confidence: 99%

“…In contrast, heat-cured PMMA liners have demonstrated good bonding strength and wear resistance. However, the loss of plasticizers results in roughening of the surface, making the liners hard, and difficult to clean [ 10 , 162 ].…”

Section: Applications Of Pmmamentioning

confidence: 99%

“…A wide range of polymers are commonly used for various applications in clinical dentistry [ 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 ]. Amongst these, poly methyl methacrylate (PMMA) is a polymer that is most commonly used in dental laboratories (to make orthodontic retainers and dentures and for repair), dental clinics (for relining dentures and temporary crowns), and industry (such as fabrication of artificial teeth) [ 7 , 9 , 10 ]. Regardless of the intended application, PMMA is conventionally available in the form of a powder–liquid system.…”

Section: Introductionmentioning

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: Chemistry and Types Of Pmmamentioning

confidence: 99%

Section: Chemistry and Types Of Pmmamentioning

confidence: 99%

Section: Applications Of Pmmamentioning

confidence: 99%

Section: Applications Of Pmmamentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Prosthodontic Applications of Polymethyl Methacrylate (PMMA): An Update

2020

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Mechanically Stable and Biocompatible Polymer Brush Coated Dental Materials with Lubricious and Antifouling Properties

Mu,

Yang,

Wang

et al. 2024

Macromolecular Bioscience

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Surface modification plays a crucial role in enhancing the functionality of implanted interventional medical devices, offering added advantages to patients, particularly in terms of lubrication and prevention of undesired adsorption of biomolecules and microorganisms, such as proteins and bacteria, on the material surfaces. Utilizing polymer brushes for surface modification is currently a promising approach to maintaining the inherent properties of materials while introducing new functionalities to surfaces. Here, surface‐initiated atom transfer radical polymerization (SI‐ATRP) technology to effectively graft anionic, cationic, and neutral polymer brushes from a mixed silane initiating layer is employed. The presence of a polymer brush layer significantly enhances the lubrication performance of the substrates and ensures a consistently low coefficient of friction over thousands of friction cycles in aqueous environments. The antimicrobial efficacy of polymer brushes is evaluated against gram‐positive Staphylococcus aureus (S. aureus) and gram‐negative Escherichia coli (E. coli). It is observed that polym er brushes grafted to diverse substrate surfaces displays notable antibacterial properties, effectively inhibiting bacterial attachment. Furthermore, the polymer brush layer shows favorable biocompatibility and anti‐inflammatory characteristics, which shows potential applications in dental materials, and other fields such as catheters and food packaging.

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