Effect of sandblasting conditions on alumina retention in representative dental alloys

Jabbari, Youssef S. Al; Zinelis, Spiros; Εliades, George

doi:10.4012/dmj.2011-210

Cited by 31 publications

(26 citation statements)

References 20 publications

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“…One possible contaminant of great concern is the residues of Al 2 O 3 from the sandblasting process. Al Jabbari et al 24 has recently demonstrated that alumina fragments embedded on the alloy surface resist steam jet cleaning, suggesting that the fragments are very firmly retained. A similar conclusion was reached from previous findings that Al content after sandblasting with Al 2 O 3 did not decrease significantly after hot steam cleaning 25 .…”

Section: Discussionmentioning

confidence: 99%

Influence of different acid etchings on the superficial characteristics of Ti sandblasted with Al2O3

Leão

Martins

2013

Mat. Res.

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Some implant manufactures use Al 2 O 3 instead TiO 2 powder to sandblast the machined dental implant, because Al 2 O 3 powder is commercially more easily available and is cheaper than TiO 2 powder. However, Al 2 O 3 powder usually leaves aluminum oxide contamination on the surface, which is potentially toxic. In this work, we subjected Ti discs previously sandblasted with Al 2 O 3 powder to 5 different acid etchings in order to verify which treatment is able to remove incorporated particles of Al 2 O 3 from the surface. One group of samples were only sandblasted and served as control. The samples were analyzed by electron microscopy (SEM, EDS), scanning probe microscopy, and grazing incidence XRD. The control group showed presence of Al 2 O 3 on the surface. Three acid etchings were efficient in removing the alumina from the tested samples. Almost all the tested samples showed higher roughness parameters values than the control samples. Titanium hydride was found in almost all test groups. Moreover, the results suggest that there is no incorporation of the whole Al 2 O 3 particle into the titanium surface after the collision, conversely a particle fragmentation occurs and what remains on the titanium surface are Al 2 O 3 residues.

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Section: Discussionmentioning

confidence: 99%

Influence of different acid etchings on the superficial characteristics of Ti sandblasted with Al2O3

Leão

Martins

2013

Mat. Res.

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“…Retention of alumina fragments on alloy surfaces has long been identified as a major problem of sandblasting, which may affect interfacial strength, even in metal-resin systems [22]. The backscattered images of the treated alloy surfaces showed different phases that corresponded to distributions of Si and Al, as determined from the EDX analysis.…”

Section: Discussionmentioning

confidence: 98%

Novel silane encapsulation system for tribochemical resin bonding to a Co-Cr alloy

Pilo

Dimitriadi

Silikas

et al. 2016

Journal of Dentistry

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A B S T R A C TObjectives: Encapsulated silane has been introduced in powders for tribochemical coating (SilJet Plus, SP), eliminating the need for a separate silane primer. The aim of the study was to comparatively evaluate the effect of SP on the surface properties and bond strength of a Co-Cr alloy with a resin composite. Methods: Co-Cr cast alloy disks were subjected to tribochemical treatments with CoJet (CJ), SilJet (SJ) and SP. Polished specimens were used as control (CR). The alloy surfaces were studied by optical profilometry (OIP; parameters Sa,Sz,Sdr,Sci), reflection FTIR microscopy (RFTIRM; CR,CJ,SJ silanized with S-Bond), scanning electron microscopy/energy dispersive X-ray microanalysis (SEM/EDX; Al + Si coverage), contact angle with water (CW) and shear bond strength with a flowable resin composite (SBS). Statistical analysis for OIP, Al + Si coverage, CW and SBS was performed by one-way ANOVA and Holm-Sidak multiple comparison tests and by Chi-square for the failure mode (a = 0.05). Results: CR demonstrated the lowest Sa,Sz,Sdr values from all sandblasted surfaces, excluding Sci of SJ. Among tribochemical treatments, no differences were found in Sa,Sz. CJ showed lower Sdr and SJ higher Sci. The peaks of SiÀ ÀOÀ À were very weak on CR, but detectable on CJ, SJ and SP, with no evidence of SiÀ ÀOÀ ÀCH 3 groups. The ranking of the statistical significant differences in CW measurements was SP > SJ + silane > CJ + silane > CR + silane. Well-defined Al and diffuse Si distributions were found on the alloy surface following tribochemical treatments. The maximum Al + Si coverage ranged between 50 and 54% (5000Â) and the random coverage between 7 and 11% (1000Â, p > 0.05 for both). Tribochemical treatments showed higher SBS from CR (p < 0.05), but with no statistically significant differences among them. CR demonstrated exclusively adhesive failures, whereas in tribochemically coated groups adhesive failures ranged from 10 to 20%. Clinical significance: Tribochemical treatments with encapsulated silane may be considered an efficient single-step alternative to conventional two-step systems for bonding to Co-Cr alloys, offering a significant reduction in chairside time.

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“…In addition, it prepares the surface irregularities that increase the mechanical connection with veneer materials and improve the wetting prior to use as an implant [15,19,20]. In addition, the alumina blasting method has been employed to create a complex, textured and rough surface area by up to 6.5 times [18]. Moreover, in order to produce a roughened surface with proper morphology, manufacturers have utilized the acid etching methods as a sequential method after sandblasting.…”

Section: Introductionmentioning

confidence: 99%

“…Generally, they have concluded that SLA treatment is able to modify the titanium surface in the case of topography and morphology. Controlling the surface morphology or texturing can be achieved by controlling SLA parameters [18]. The previous literature shows some advantages and disadvantages of SLA treatment.…”

Section: Introductionmentioning

confidence: 99%

Prediction and characterization of surface roughness using sandblasting and acid etching process on new non-toxic titanium biomaterial: adaptive-network-based fuzzy inference System

Khanlou

Ang

Barzani

et al. 2015

Neural Comput & Applic

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An adaptive neuro-fuzzy system (ANFIS) model was employed to predict the surface roughness. Surface roughening of titanium biomaterials has a crucial effect on increasing the biocompatibility. For this purpose, sandblasted, large-grit, acid-etched (SLA) has been introduced as an effective method to change the surface texturing and roughness. Subsequent processes-polishing, sandblasting and acid etching or SLA-were employed to modify the surface. Alumina particles for surface blasting and Kroll's etchant (3 ml HF ? 6 ml HNO 3 ? 100 ml H 2 O) for acid etching were utilized in this experiment. This was performed for three different periods of time (10, 20 and 30 s) and temperatures (25, 45 and 60 centigrade). Correspondingly, the Ti-13Zr-13Nb surfaces were evaluated using a field emission scanning electron microscope for texturing, contact mode profile meter for the average surface roughness (Ra) (nm) and atomic force microscopy for surface texturing at the nano-scale. In addition, the surface roughness was reduced in each condition, particularly in extremely high conditions. Significantly, the ANFIS model predicted the Ra amount of textured surface with an error band of 10 %. This research presents an idea to use the ANFIS model to obtain proper biological signs on the roughened surface in terms of surface roughness.

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Effect of sandblasting conditions on alumina retention in representative dental alloys

Cited by 31 publications

References 20 publications

Influence of different acid etchings on the superficial characteristics of Ti sandblasted with Al2O3

Influence of different acid etchings on the superficial characteristics of Ti sandblasted with Al2O3

Novel silane encapsulation system for tribochemical resin bonding to a Co-Cr alloy

Prediction and characterization of surface roughness using sandblasting and acid etching process on new non-toxic titanium biomaterial: adaptive-network-based fuzzy inference System

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