Laser-texturing and traditional surface modification to improve the adhesion of glass fiber-reinforced composite posts to resin cements

Fernandes, Valter; Silva, Filipe; Henriques, Bruno; Özcan, Mutlu; Carvalho, Oscar; Souza, Júlio C.M.

doi:10.1016/j.ijadhadh.2024.103645

Cited by 3 publications

References 46 publications

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Decomposition of matrix in basalt fiber‐reinforced composites using laser processing parameters for clear unveiling of fibers without damage

Ürgün,

Fidan,

Özsoy

et al. 2024

Polymer Composites

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This work investigates the effects of laser processing parameters on basalt fiber‐reinforced composites for the optimization of surface processing without fiber damage. Various conditions of laser power, speed, and stand‐off distance were applied using a CO₂ laser. Consequently, a well‐processed morphology with full matrix removal and clear fiber exposure was achieved under optimized conditions of 32 W power, 200 mm/s speed, and 5 mm SOD. Those parameters resulted in a surface roughness Sa of 6.11 μm. Using the optimum parameters obtained from the experiments, the surface energy density was computed as 0.89 J/mm2, while ensuring adequate material removal without damage to the fiber. Lower power input of 20 W resulted in incomplete removal of the matrix; on the other extreme, unreasonably high powers resulted in fiber degradation. The experiments determined that optimum laser parameters indeed play a critical role in the processing of basalt fiber composites surfaces.Highlights Ideal laser settings: 32 W, 200 mm/s, 5 mm SOD. Full‐matrix removal and fiber exposition realized without any damage. The achieved surface roughness Sa is 6.11 μm for optimized laser parameters. Excessive laser power leads to a fiber damage.

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Decomposition of matrix in basalt fiber‐reinforced composites using laser processing parameters for clear unveiling of fibers without damage

Ürgün,

Fidan,

Özsoy

et al. 2024

Polymer Composites

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Surface Modification of Glass Fiber-Reinforced Composite Posts by Hydrogen Peroxide: A Scoping Review

Fernandes,

Tuttle,

Carvalho

et al. 2024

Biomedical Materials & Devices

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On the rehabilitation of endodontic treated teeth using intraradicular retention, adhesive failures often occur between the intraradicular post and the resin-matrix cement. The main aim of this study was to conduct a scoping review on the surface modification of glass fiber-reinforced composite posts by hydrogen peroxide solutions. An electronic search was performed in the PubMed database, using combinations of keywords pursuing articles published between 2010 and 2024 in English language. Of the 13 selected studies, 12 investigated the bond strength between the glass fiber-reinforced composite (GFRC) post and the resin-matrix cement after the surface treatment of the post, 5 articles analyzed failures using a stereomicroscope, and 7 studies analyzed the surface topography by scanning electron microscopy (SEM). Etching procedures with hydrogen peroxide (H2O2) altered the surface of the GFRC post by selectively dissolving the matrix without damaging the fibers, resulting in a larger surface area of exposed fibers available to react with the adhesive system or silane. Studies revealed high bond strength values between the etched GFRC posts to the resin-matrix materials. Surface treatment of GFRC posts with hydrogen peroxide seems promising considering the feasibility on the surface modification resulting in the improvement of bond strength of intraradicular posts to resin-matrix cements.

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Effect of Er:Yag Laser and Different Surface Treatment Methods on the Push out Bond Strength of Glass Fiber Post to Self Adhesive Resin Cement

Elalfy,

Elbasty

2024

Preprint

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Purpose to compare the bond strength of adhesive-based resin cement and glass fiber posts (GFP) at different root levels after exposure to Er:Yag laser irradiation compared to other conventional surface treatment procedures. Methods A total of 24 mandibular premolars were decoronated, root canal treatment was done, post spaces were prepared, and roots were mounted in acrylic resin blocks. Fiber posts were divided into four groups (n = 6) according to surface treatment methods: 1) silane only (control group), 2) Er:YAG laser 1.5 W + silane, 3) 30% hydrogen peroxide + silane, 4) sandblasting with 50 µm aluminum oxide particles + silane. GFP were cemented using self-adhesive resin cement. Scanning electron microscope images with 500x magnification were taken for all groups. Push-out test was performed using a universal testing machine. Results The difference between groups was statistically significant with laser group recorded the highest mean ± SD value of push out bond strength (5.668042 ± 1.16 MPa), followed by H2O2 group ,then the control group, meanwhile the lowest value was recorded with Sand-blasting group. The difference between the radicular regions was not statistically significant, with the middle region recorded the highest push out bond strength (4.746851 ± 0.73 MPa). Conclusion GFP surface treatment using an Er:yag laser is effective as it increases the retention to resin cement,while sandblasting decreases fiber post retention to resin cement. The hydrogen peroxide and the silane coupling agent give similar bond strength. The middle and apical regions of GFP have better retention to resin cement than the coronal one.

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Laser-texturing and traditional surface modification to improve the adhesion of glass fiber-reinforced composite posts to resin cements

Cited by 3 publications

References 46 publications

Decomposition of matrix in basalt fiber‐reinforced composites using laser processing parameters for clear unveiling of fibers without damage

Decomposition of matrix in basalt fiber‐reinforced composites using laser processing parameters for clear unveiling of fibers without damage

Surface Modification of Glass Fiber-Reinforced Composite Posts by Hydrogen Peroxide: A Scoping Review

Effect of Er:Yag Laser and Different Surface Treatment Methods on the Push out Bond Strength of Glass Fiber Post to Self Adhesive Resin Cement

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