Hydrofluoric acid etching of dental zirconia. Part 1: etching mechanism and surface characterization

Flamant, Quentin; Marro, Fernando García; Rovira, Josep María Puig; Anglada, M.

doi:10.1016/j.jeurceramsoc.2015.09.021

Cited by 46 publications

(51 citation statements)

References 40 publications

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“…However the formation of pits could also be favored by a phenomenon of autocatalysis, in which the reaction products would increase the etch rate locally, as it has been observed for instance in silicon [20]. This would be consistent with the exponential relationship between mass loss and HF concentration which was previously reported [12].…”

Section: Qualitative Interpretationsupporting

confidence: 85%

“…The volume of acid was 1 mL by sample. Etching times between zero and two hours and a concentration of 40% were used rather than longer times and more diluted solutions because these conditions were shown to be the most appropriate for a fast and uniform roughening [12].…”

Section: Chemical Etchingmentioning

confidence: 99%

“…Among the different surface chemical treatments already proposed in the literature for this purpose, hydrofluoric acid (HF) etching appears to be a good candidate [9][10][11][12]. Besides zirconia dental implants with acid etched surface are already commercialized (CeraRoot implants with ICE™ surface) and apparently have shown a similar success rate as compared to Titanium implants after five years of follow-up study [13].…”

Section: Introductionmentioning

confidence: 99%

“…The surface characterization and the questions related to the etching mechanism are treated in a separated article [12].…”

Section: Introductionmentioning

confidence: 99%

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Hydrofluoric acid etching of dental zirconia. Part 2: effect on flexural strength and ageing behavior

Flamant

Anglada

2016

Journal of the European Ceramic Society

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Among the diverse treatments proposed to promote the osseointegration of zirconia dental implants, hydrofluoric acid (HF) etching appears to be a good candidate. However little is known on the effect of this process on the mechanical properties and long-term reliability. In this work, the surface integrity, the flexural strength and the ageing sensitivity of yttria-stabilized zirconia were assessed after etching in HF 40%. Results show that etching induces an increase of monoclinic phase content and a decrease in flexural strength. The strength decrease is limited to 15% for etching times below 60 min, whereas it reaches 29 % after 120 min because of the formation of large etching pits. No substantial change in the ageing sensitivity was evidenced.Within the limits of this study, HF 40% etched zirconia appears to be reliable for long-term implantation provided that the etching duration does not exceed 60 min.

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Section: Qualitative Interpretationsupporting

confidence: 85%

Section: Chemical Etchingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…The surface characterization and the questions related to the etching mechanism are treated in a separated article [12].…”

Section: Introductionmentioning

confidence: 99%

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Hydrofluoric acid etching of dental zirconia. Part 2: effect on flexural strength and ageing behavior

Flamant

Anglada

2016

Journal of the European Ceramic Society

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“…Energy dispersive spectroscopy evidenced that they were mainly composed of yttrium and fluorine. Some of them had an octahedral shape suggesting the presence of YF3 crystals, similar to those observed when etching Y-TZP [65]. XPS analysis confirmed the presence of Figure 6.…”

Section: Surface Characterization Of Injection Molded and Selectivelysupporting

confidence: 70%

Selective etching of injection molded zirconia-toughened alumina: Towards osseointegrated and antibacterial ceramic implants

et al. 2016

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Due to their outstanding mechanical properties and excellent biocompatibility, zirconiatoughened alumina (ZTA) ceramics have become the gold standard in orthopedics for the fabrication of ceramic bearing components over the last decade. However, ZTA is bioinert, which hampers its implantation in direct contact with bone. Furthermore, periprosthetic joint infections are now the leading cause of failure for joint arthroplasty prostheses. To address both issues, an improved surface design is required: a controlled micro-and nano-roughness can promote osseointegration and limit bacterial adhesion whereas surface porosity allows loading and delivery of antibacterial compounds. In this work, we developed an integrated strategy aiming to provide both osseointegrative and antibacterial properties to ZTA surfaces. The microtopography was controlled by injection molding. Meanwhile a novel process involving the selective dissolution of zirconia (selective etching) was used to produce nano-roughness and interconnected nanoporosity. Potential utilization of the porosity for loading and delivery of antibiotic molecules was demonstrated, and the impact of selective etching on mechanical properties and hydrothermal stability was shown to be limited. The combination of injection molding and selective etching thus appears promising for fabricating a new generation of ZTA components implantable in direct contact with bone.3

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Impact of physical decontamination methods on zirconia implant surface and subsequent bacterial adhesion: An in‐vitro study

Tan

Miller

Antunes

et al. 2021

Clinical & Exp Dental Res

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Objective: To evaluate the effect of routinely used physical decontamination methods on the surface characteristics of zirconia implants and subsequent ability of bacteria to adhere in vitro.Background: Physical decontamination methods commonly used in peri-implantitis therapy and routine implant maintenance can potentially alter zirconia implant surfaces.Methods: Acid-etched zirconia discs were instrumented with titanium curette (TC), plastic curette, air abrasive device, ultrasonic scaler (US) with stainless steel tip. Following instrumentation, surface topography, and surface elemental composition was analyzed using 3D-laser scanning microscopy and energy-dispersive X-ray spectroscopy, respectively. Subsequently, plaque biofilm was cultured on zirconia discs for 48 h and bacterial adhesion assessed using a turbidity test and scanning electron microscopy.Results: A significant difference in surface roughness was observed between the US and control group (p < 0.05). The US and TC caused gray surface discolouration on zirconia discs due to deposition of metallic residue as confirmed by X-ray spectroscopy. No significant difference in bacterial adhesion was noted among all treatment groups (p > 0.05).Conclusion: TC and US with stainless steel tips should be used with caution due to deposition of metallic residue on the surface. Air abrasive devices and plastic curettes caused minimal surface alterations and are, therefore, safer for zirconia implant decontamination.

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Hydrofluoric acid etching of dental zirconia. Part 1: etching mechanism and surface characterization

Cited by 46 publications

References 40 publications

Hydrofluoric acid etching of dental zirconia. Part 2: effect on flexural strength and ageing behavior

Hydrofluoric acid etching of dental zirconia. Part 2: effect on flexural strength and ageing behavior

Selective etching of injection molded zirconia-toughened alumina: Towards osseointegrated and antibacterial ceramic implants

Impact of physical decontamination methods on zirconia implant surface and subsequent bacterial adhesion: An in‐vitro study

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