Influence of silanized silica and silanized feldspar addition on the mechanical behavior of polymethyl methacrylate resin denture teeth

Raszewski, Zbigniew; Nowakowska-Toporowska, Agnieszka; Weżgowiec, Joanna; Nowakowska, Danuta; Więckiewicz, Włodzimierz

doi:10.1016/j.prosdent.2019.12.007

Cited by 13 publications

(13 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The addition of silanized feldspar improved these properties (elastic modulus, hardness, and flexural strength) without compromising the impact strength. Similar results were reported by adding silica fillers, however the flexural strength was reduced [ 71 ].…”

Section: Applications Of Pmmasupporting

confidence: 87%

“…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%

See 1 more Smart Citation

Prosthodontic Applications of Polymethyl Methacrylate (PMMA): An Update

2020

View full text Add to dashboard Cite

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.

show abstract

Section: Applications Of Pmmasupporting

confidence: 87%

Section: Historical Background and Developmentmentioning

confidence: 99%

Prosthodontic Applications of Polymethyl Methacrylate (PMMA): An Update

2020

View full text Add to dashboard Cite

show abstract

“…To facilitate uniform dispersion of the components, the mixture was supplemented with five Al 2 O 3 balls (Jezierska Porcelanka, Desná, Czech Republic) having a diameter of 5 mm. Then, the ingredients were mixed on a roller mixer machine (Jezierska Porcelanka, Desná, Czech Republic) at 40 rpm for 60 min [ 18 ]. The prepared suspensions were transferred into the resin containers of the printer Liquid Crystal Precision (Photocentric Ltd., Peterborough, England), which uses Daylight Polymer Printing technology for curing photoreactive polymers.…”

Section: Methodsmentioning

confidence: 99%

Mechanical Properties, Cytotoxicity, and Fluoride Ion Release Capacity of Bioactive Glass-Modified Methacrylate Resin Used in Three-Dimensional Printing Technology

Raszewski¹,

Kulbacka

Nowakowska-Toporowska

2022

Materials

Self Cite

View full text Add to dashboard Cite

Background: Clinically, three-dimensional (3D) printing technology is becoming a popular and efficient dental processing technology. Recently, there has been an increasing demand for dental materials that exhibit bioactive properties. The present study aimed to evaluate the mechanical properties, cytotoxicity, and fluoride ion release capacity of 3D-printed dental resins modified with bioactive glass. Materials and methods: The resin FotoDent splint used in the production of removable orthodontic splints, was modified by the addition of two types of bioactive glasses that are capable of releasing fluoride ions. The novel materials used for the production of dental splints were examined for their mechanical, physical, and biological properties (fracture resistance, sorption, solubility, elution of nonpolymeric substances, and release of fluoride ions over time) and cytotoxic effects on cell cultures. Results: Initially, the fracture toughness of the 3D-printed resin was found to be 55 MPa, but after modification with glass, the resistance was reduced to about 50 MPa. Sorption and solubility values of the materials (19.01 ÷ 21.23 µg/mm3 and 0.42 ÷ 1.12 µg/mm3, respectively) complied with the safety limits imposed by ISO standard. Modified resins were capable of releasing fluoride ions, and the maximum releasing effect was observed after 14 days of incubation. Both the modified resins, after four days of contact with human gingival fibroblasts, exhibited moderate cytotoxic properties. Conclusions: The experimental results showed that modification of methacrylate resin, used in 3D printing technology, with bioactive glasses produces novel dental materials that possess desirable bioactive properties. The findings of this study indicate the potential ability of modified polymethacrylate resins to release fluoride ions in the oral cavity environment. The modified materials are characterized with a moderate decrease in physical properties and mild cytotoxicity on direct contact with human fibroblasts.

show abstract

“…Despite its ease of processing, it has inherited poor mechanical properties, such as poor flexural strength, flexural modulus, and toughness (1)(2)(3) . To overcome these drawbacks, many types of research were carried out to improve its mechanical properties by incorporating various reinforcing fillers, such as silica, E-glass, nano-particles such as ZrO 2 , and synthetic polymeric fibers (5)(6)(7)(8)10). Recently, various researches attempted to study the influence of antimicrobial agents such as Ag-NPs and Henna on the mechanical and physical properties of the PMMA acrylic denture base material without adversely affecting its aesthetic (2,7,9,12) .…”

Section: Discussionmentioning

confidence: 99%

“…The acrylic resin is considered the preferred material for denture base construction. Its various advantages include good colour-matching ability, biocompatibility, economic coast, and low weight (3)(4)(5) . However, unfortunately, this material has some inherent shortcomings, which finally cause failure of prosthesis during clinical service (1,3) .…”

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

View full text Add to dashboard Cite

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.

show abstract

Influence of silanized silica and silanized feldspar addition on the mechanical behavior of polymethyl methacrylate resin denture teeth

Cited by 13 publications

References 14 publications

Prosthodontic Applications of Polymethyl Methacrylate (PMMA): An Update

Prosthodontic Applications of Polymethyl Methacrylate (PMMA): An Update

Mechanical Properties, Cytotoxicity, and Fluoride Ion Release Capacity of Bioactive Glass-Modified Methacrylate Resin Used in Three-Dimensional Printing Technology

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

Contact Info

Product

Resources

About