Toxicity of resin-matrix cements in contact with fibroblast or mesenchymal cells

Martinez-Gonzalez, Marta; Fidalgo-Pereira, Rita; Torres, Orlanda; Silva, Filipe; Henriques, Bruno; Özcan, Mutlu; Souza, Júlio C. M.

doi:10.1007/s10266-022-00758-w

Cited by 10 publications

(7 citation statements)

References 45 publications

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“…The two resin cements have similar chemical compositions; the inorganic components frequently comprise micro and/or nano-scale colloidal silica, barium silicate, or zirconium silicate particles. The organic matrix often involves methacrylate-based monomers (i.e., BisGMA, UDMA, TEGDMA) and photoinitiators, although the self-adhesive resin cement includes 10-MDP or 4-META acidic monomers that evince self-adhesive properties with respect to tooth tissues [ 47 , 48 , 49 ]. Dual-cured resin cements require multi-step adhesive procedures, with prior conditioning with an etch-and-rinse or self-etch (SE) adhesive [ 50 , 51 ].…”

Section: Discussionmentioning

confidence: 99%

Fitting of Different Intraradicular Composite Posts to Oval Tooth Root Canals: A Preliminary Assessment

Fernandes,

Fidalgo-Pereira,

Edwards

et al. 2024

Materials

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The purpose of the present study was to perform a preliminary analysis of the fitting of different fiber-reinforced composite (GFRC) posts to tooth root canals and determine the resin cement layer thickness. The following GFRC posts were assessed: bundle posts (Rebilda GTTM, VOCO, Germany), sleeve system (SAPTM, Angelus Ind, Brazil), and accessory posts (ReforpinTM, Angelus, Brazil). Twenty-four freshly extracted mandibular single-rooted pre-molars were endodontically treated and divided into six groups, according to the type of GFRC post and resin cement (self-adhesive or conventional dual-cured). Then, specimens were cross-sectioned and inspected by optical microscopy regarding the cement layer thickness and presence of defects such as pores, voids, or fissures were assessed. Bundle and accessory posts revealed a regular distribution of resin cement with a lower number of voids than found with sleeve systems. The sleeve system posts showed poor fitting at the apical portion of the root canals. The type of resin cement did not affect the thickness of the interface, although both bundle and accessory posts allow a better distribution of resin cement and fibers. The present preliminary study reveals interesting insights on the fitting of bundle and accessory posts to root dentin and resin cement layer thickness in oval-shape root canals. The sleeve system posts showed adequate fitting only at the coronal portion of the canals.

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Section: Discussionmentioning

confidence: 99%

Fitting of Different Intraradicular Composite Posts to Oval Tooth Root Canals: A Preliminary Assessment

Fernandes,

Fidalgo-Pereira,

Edwards

et al. 2024

Materials

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“…In general, the inorganic filler in the resin matrix cements ranges from 60 to 75 wt%. The inorganic filler contains particles of different shapes and sizes, being composed of barium fluoro alumino borosilicate glass powders, strontium, zirconium, quartz, amorphous silica, and others [ 23 ].…”

Section: Discussionmentioning

confidence: 99%

Advanced Dentistry Biomaterials Containing Graphene Oxide

Prodan,

Moldovan,

Cuc

et al. 2024

Polymers

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The aim of this study was to obtain three experimental resin-based cements containing GO and HA-Ag for posterior restorations. The samples (S0, S1, and S2) shared the same polymer matrix (BisGMA, TEGDMA) and powder mixture (bioglass (La2O3 and Sr-Zr), quartz, GO, and HA-Ag), with different percentages of graphene oxide (0%, 0.1%, 0.2% GO) and silver-doped hydroxyapatite (10%, 9.9%, 9.8% HA-Ag). The physical–chemical properties (water absorption, degree of conversion), mechanical properties (DTS, CS, FS), structural properties (SEM, AFM), and antibacterial properties (Staphylococcus aureus, Enterococcus faecalis, Streptococcus mutans, Porphyromonas gingivalis, and Escherichia coli) were investigated. The results showed that the mechanical properties, except for the diametral tensile test, increased with the rise in the %GO. After 28 days, water absorption increased with the rise in the %GO. The surface structure of the samples did not show major changes after water absorption for 28 days. The antibacterial effects varied depending on the samples and bacterial strains tested. After increasing the %GO and decreasing the %HA-Ag, we observed a more pronounced antibacterial effect. The presence of GO, even in very small percentages, improved the properties of the tested experimental cements.

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“…It was proposed that a high monomer conversion could potentially lead to the enhanced mechanical strength with a low risk toxic monomer release for resin-based materials 44,45) . A study reported that adding strontium phosphates at 25 wt% into powder phase significantly decreased the DC of experimental resin composites upon light-curing, which could presumably due to the enhanced light scattering 15) .…”

Section: Discussionmentioning

confidence: 99%

Assessment of physical/mechanical properties and cytotoxicity of dual-cured resin cements containing Sr-bioactive glass nanoparticles and calcium phosphate

THANYASIRI,

NARUPHONTJIRAKUL,

PADUNGLAPPISIT

et al. 2023

Dent. Mater. J.

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The aim was to develop dual-cured resin cements containing Sr-bioactive glass nanoparticles (Sr-BGNPs; 5 or 10 wt%) and monocalcium phosphate monohydrate (MCPM; 3 or 6 wt%). Effects of additives on degree of monomer conversion (DC), biaxial flexural strength/ modulus, shear bond strength (SBS), mass/volume change, color stability, ion release, and cytotoxicity were examined. Controls included material without reactive fillers and Panavia SA Plus (PV). Experimental cements showed higher DC than PV regardless of light activation (p<0.05). Mean SBS and color stability were comparable between experimental cements and PV. Cell viability upon the exposure to sample extracts of experimental cements was 80%-92%. High additive concentrations led to lower strength and modulus than PV (p<0.05). The additives increased mass change, reduced color stability, and promoted ion release. The experimental resin cements demonstrated acceptable mechanical/chemical properties and cytotoxicity. The additives reduced the strength but provided ion release, a desirable action to prevent recurrent caries.

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Toxicity of resin-matrix cements in contact with fibroblast or mesenchymal cells

Cited by 10 publications

References 45 publications

Fitting of Different Intraradicular Composite Posts to Oval Tooth Root Canals: A Preliminary Assessment

Fitting of Different Intraradicular Composite Posts to Oval Tooth Root Canals: A Preliminary Assessment

Advanced Dentistry Biomaterials Containing Graphene Oxide

Assessment of physical/mechanical properties and cytotoxicity of dual-cured resin cements containing Sr-bioactive glass nanoparticles and calcium phosphate

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