The effect of triphenylbismuth on the radiopacity and performance properties of compression‐ and injection‐molded denture resins

Lang, Lisa A.; Mattie, Patrick; Rawis, H. Ralph

doi:10.1111/j.1532-849x.2000.00023.x

Cited by 8 publications

(6 citation statements)

References 13 publications

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“…Inducing radiopacity by modification is challenging, as most heavy metal salts are not compatible with PMMA [ 7 ]. The incorporation of various heavy metals has been explored to enhance the radiopacity [ 130 , 131 ]. Although various modifications have improved the radiopacity of PMMA to some extent, there are certain concerns, such as a lack of physical or chemical binding of additives to the matrix and the salts being prone to leaching out of the denture base [ 132 , 133 ].…”

Section: Properties Of Pmmamentioning

confidence: 99%

“…Similarly, adding heavy metal salts improved the radiopacity in one study, however various properties, including the polishability, bonding strength, and aesthetic properties, were significantly affected [ 133 ]. In contrast, Lang et al [ 130 ] incorporated triphenylbismuth (30% w/w ) into PMMA and reported sufficient radiopacity without compromising the mechanical and aesthetic properties. The modification of PMMA materials by adding radiopaque agents without compromising the aesthetic and mechanical properties is challenging and requires further research.…”

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: Properties Of Pmmamentioning

confidence: 99%

Section: Properties Of Pmmamentioning

confidence: 99%

Prosthodontic Applications of Polymethyl Methacrylate (PMMA): An Update

2020

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“…In that direction, bismuth compounds such as triphenylbismuth, have been widely investigated due to the possibility of dissolving the organobismuth compound in organic media, e.g. monomers, to obtain homogeneous materials 9,10 with the subsequent improvement in mechanical properties 11 and less osteo-lytic response than that of materials prepared by blending techniques. 12 Moreover, the presence of an element with high atomic number such as bismuth 13,14 imparts high radiopacity to the cement.…”

Section: Introductionmentioning

confidence: 99%

Acrylic bone cements with bismuth salicylate: Behavior in simulated physiological conditions

Hernández

Vázquez

López-Bravo

et al. 2006

J Biomedical Materials Res

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In a previous work, we reported the development of acrylic bone cement formulations for application in percutaneous vertebroplasty, by using bismuth salicylate (BS) as the radiopaque agent. Our objective was to obtain high radiopacity along with a therapeutical effect produced by the release of salicylic acid in situ. To follow that study, the setting kinetics and static and dynamical mechanical properties of the BS cements were studied in simulated physiological conditions. Moreover, radiopacity after various times of immersion in saline and the wettability of the cements surfaces were determined. The study finished with the analysis of the biological response. From the results, it can be concluded that physiological conditions did not affect negatively to the cements performance, since all BS-loaded cements fulfilled the ISO standard requirements. Radiopacity of the formulations was maintained over time and cements with BS were found to be biocompatible.

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“…A comparison of 0.5 mm thick coupons of iodo–ene and thiol–ene polymer elastomers and an aluminum wedge consisting of 1 mm thick steps is shown in Figure b. Visually, the iodo–ene polymer is transparent, resembling typical amorphous, cross-linked polymers; however, radiography reveals that the iodo–ene polymer is approximately seven times as radiopaque as aluminum, notably higher than other approaches for achieving polymer radiopacity. − Conversely, the thiol–ene polymer, despite incorporating sulfur, a relatively high atomic number element, is barely visible on the radiograph and is approximately one-third as radiopaque as aluminum.…”

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confidence: 99%

Expanding the Alternating Propagation–Chain Transfer-Based Polymerization Toolkit: The Iodo–Ene Reaction

2015

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Analogous to the thiol−ene and phosphane−ene polymerizations, radical-mediated iodo−ene reactions are described here that proceed via alternating propagation and chain transfer (i.e., APT) reactions between perfluoroiodide-and vinyl-bearing monomers. The thermal polymerization of a diiodo/tetraene formulation yielded a cross-linked, homogeneous polymer that was approximately seven times as radiopaque as aluminum owing to its high iodine content. Visible-light photopolymerizations of model iodo−ene monomers were monitored using mid-IR spectroscopy, revealing that the perfluoroiodide functional group consumption exceeded that of the vinyl, a discrepancy that decreased with increasing irradiation intensities and hence polymerization rates. The functional group conversions in resin formulations with a large initial perfluoroiodide excess exacerbated secondary side reactions that led to off-stoichiometric functional group consumption; nevertheless, photopolymerization of resin formulations with excess vinyl stoichiometry proceeded according to the ideal APT mechanism.

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The effect of triphenylbismuth on the radiopacity and performance properties of compression‐ and injection‐molded denture resins

Abstract: Triphenylbismuth at a final concentration of 30% wt/wt can be added to polymethyl methacrylate injection-molded resins to provide a high level of detection on chest or abdominal radiographs without adversely affecting resin color stability and transverse deflection.

Cited by 8 publications

References 13 publications

Prosthodontic Applications of Polymethyl Methacrylate (PMMA): An Update

Prosthodontic Applications of Polymethyl Methacrylate (PMMA): An Update

Acrylic bone cements with bismuth salicylate: Behavior in simulated physiological conditions

Expanding the Alternating Propagation–Chain Transfer-Based Polymerization Toolkit: The Iodo–Ene Reaction

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