Evaluation of the Surface Characteristics of Dental CAD/CAM Materials after Different Surface Treatments

Papadopoulos, Constantinos; Pahinis, Kimon; Saltidou, Kyriaki; Dionysopoulos, Dimitrios; Tsitrou, Effrosyni

doi:10.3390/ma13040981

Cited by 40 publications

(46 citation statements)

References 39 publications

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“…Also, the HF treatment increased the SBS of orthodontic brackets on LU ( 10 ), and in the polymer-infiltrated ceramic by Elsaka ( 11 ). The increase of SBS yielded by the HF, as well the other surface treatments in this study, could be explained by the higher surface roughness ( 13 ), which increases the impregnation of bonding agents ( 14 ).…”

Section: Discussionmentioning

confidence: 63%

The impact of different surface treatments on the shear bond strength of orthodontic metal brackets applied to different CAD/CAM composites

Almeida¹,

Hass²,

Sasaki³

et al. 2021

J Clin Exp Dent

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Background To investigate the shear bond strength (SBS) of orthodontic metal brackets applied to different CAD/CAM composites treated with different surface treatments. Material and Methods Specimens of two CAD/CAM composites were obtained of Lava Ultimate (LU; n=60) and Brilliant Crios (BC; n=60) which were randomly separated into six subgroups (n=10) according to the surface treatment: control (CTL); sandblasting (SB); sandblasting and silane (SBSL); hydrofluoric acid (HF); hydrofluoric acid and silane (HFSL); and Monobond Etch&Prime (MEP). The mandibular central incisor metal brackets were bonded with a light-cure adhesive. The SBS data were analyzed using the two-way analysis of variance and Turkey’s test, while the adhesive remnant index (ARI) by the Kruskal–Wallis, all the significance was set at 5%. Results A higher SBS was found for BC in comparison with LU ( p < 0.05). All the surface treatments increased the SBS in comparison with CTL ( p < 0.0001). Treatment with HF, SBSL and HFSL ( p > 0.05) showed a higher SBS, which was followed by MEP and SB ( p > 0.05), all in comparison with CTL ( p < 0.0001). For ARI, a significant effect was detected only for the surface treatment ( p < 0.01), and not for CAD/CAM resin ( p > 0.05). Significant differences were detected between CTL to HF, and HF to MEP, as well. Conclusions The SBS is highly affected by the surface treatment and also by the CAD/CAM composite. The surface treatment improves the SBS and should be encouraged when orthodontic brackets are bonded to CAD/CAM composites. Key words: CAD/CAM composite resin, brackets, shear bond strength, surface treatment, bonding.

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Section: Discussionmentioning

confidence: 63%

The impact of different surface treatments on the shear bond strength of orthodontic metal brackets applied to different CAD/CAM composites

Almeida¹,

Hass²,

Sasaki³

et al. 2021

J Clin Exp Dent

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“…Spherical filler particles were only detected in SB. It is likely that the fillers were not mechanically stressed and were produced by other processes, such as a pyrogenic process (fumed silica) or chemical sol-gel process [38,39]. Under high magnifications (50,000), cracks (Figure 8, red arrows) could be sporadically identified in the fillers of CBC, LC, and VGB, which might be a result of mechanical crushing.…”

Section: Discussionmentioning

confidence: 99%

Characterisation of the Filler Fraction in CAD/CAM Resin-Based Composites

et al. 2021

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The performance of dental resin-based composites (RBCs) heavily depends on the characteristic properties of the individual filler fraction. As specific information regarding the properties of the filler fraction is often missing, the current study aims to characterize the filler fractions of several contemporary computer-aided design/computer-aided manufacturing (CAD/CAM) RBCs from a material science point of view. The filler fractions of seven commercially available CAD/CAM RBCs featuring different translucency variants were analysed using Scanning Electron Microscopy (SEM) with Energy Dispersive X-ray Spectroscopy (EDS), Micro-X-ray Computed Tomography (µXCT), Thermogravimetric Analysis (TG) and X-ray Diffractometry (XRD). All CAD/CAM RBCs investigated included midifill hybrid type filler fractions, and the size of the individual particles was clearly larger than the individual specifications of the manufacturer. The fillers in Shofu Block HC featured a sphericity of ≈0.8, while it was <0.7 in all other RBCs. All RBCs featured only X-ray amorphous phases. However, in Lava Ultimate, zircon crystals with low crystallinity were detected. In some CAD/CAM RBCs, inhomogeneities (X-ray opaque fillers or pores) with a size <80 µm were identified, but the effects were minor in relation to the total volume (<0.01 vol.%). The characteristic parameters of the filler fraction in RBCs are essential for the interpretation of the individual material’s mechanical and optical properties.

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“…Compared to the control groups, surface treatments in all tested materials resulted in higher surface roughness values, but there were not negligible differences among the surface treatments. The influence of treatments to surface properties of the tested materials is probably due to discrepancies in their composition and structure [75]. Tekce et al got similar results while investigated the effect of sandblasting power particles on microtensile bond strength of dualcure adhesive cement (G-CEM LinkForce) to CAD/CAM materials (LU, VE, Cerasmart).…”

Section: Other Reinforced Cad/cam Composite Resinsmentioning

confidence: 91%

“…Papadopoulos et al investigated the surface roughness and morphology of BHC, LU, BC, and VE using four different surface treatments [75]. The surface of the specimens of each material received sandblasting with 29 µm Al 2 O 3 particles, 9% hydrofluoric acid etching and silane application, and the tribochemical method using CoJet System.…”

Section: Other Reinforced Cad/cam Composite Resinsmentioning

confidence: 99%

A Potential Application of Materials Based on a Polymer and CAD/CAM Composite Resins in Prosthetic Dentistry

Jovanović

Živić

2021

J Prosthodont Res

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Purpose: A bioactive high performance polymer (BioHPP) and computer-aided design/computer-aided manufacturing (CAD/CAM) composite resin materials are a relatively new class of dental biomaterials, that are biocompatible and have good aesthetic features. In this review paper, we will summarize literature and publication data on the characteristics of the mentioned materials, as well as their potential application in the dental prosthetics.Study selection: Available studies and literature reviews from PubMed, SCIndex, Scopus and Google Scholar corresponding to polyetheretherketone (PEEK), high-performance polymers, reinforced composite materials, composite materials, resins, glass-fiber reinforced materials, CAD/CAM materials, dental implants, removable and fixed dental were reviewed. Results: To avoid many disadvantages of metals and their alloys in dental practice, such as inadequate color, high density, thermal conductivity and possible allergic reactions, materials based on polymers (such as BioHPP), and CAD/CAM composite resins are being developed. These materials have significantly better aesthetics and physical-mechanical properties. They are biocompatible materials that are lightweight, resistant, durable, exhibit high bending and compression resistance. Conclusions: The use of CAD/CAM composite resin materials and BioHPP in dentistry has begun recently, so the data about their potential clinical use are limited. Most of their features have been demonstrated through laboratory testing, while clinical studies are relatively scarce, so the need for further clinical trials is emphasized.

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Evaluation of the Surface Characteristics of Dental CAD/CAM Materials after Different Surface Treatments

Cited by 40 publications

References 39 publications

The impact of different surface treatments on the shear bond strength of orthodontic metal brackets applied to different CAD/CAM composites

The impact of different surface treatments on the shear bond strength of orthodontic metal brackets applied to different CAD/CAM composites

Characterisation of the Filler Fraction in CAD/CAM Resin-Based Composites

A Potential Application of Materials Based on a Polymer and CAD/CAM Composite Resins in Prosthetic Dentistry

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