Surface characterization of zirconia dental implants

Zinelis, Spiros; Thomas, Andrew G.; Syres, Karen L.; Silikas, Nick; Εliades, George

doi:10.1016/j.dental.2009.11.079

Cited by 100 publications

(88 citation statements)

References 22 publications

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“…This constitutes an interesting result given the high sensitivity of osteoblasts to roughness at different scales [7,9,[38][39][40][41] and the strong influence of fractal dimension on osteoblastic adhesion and differentiation [10]. Regarding the roughness parameters, although the lack of standardization in the measurements makes comparison difficult with other studies, the values of S a , S dr , S ds and S ci which were obtained here fall within the range of the reported values for commercial dental implants with proved high success rate [8,[42][43][44]. On the other hand, the limited evolution of S a , S dr , S ds and S ci after one hour of etching tends to indicate that inferior etching times are more appropriate for the treatment of dental implants.…”

Section: Evolution Of the Surface Topography Over Etching Timesupporting

confidence: 67%

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

Flamant

Marro

Rovira

et al. 2016

Journal of the European Ceramic Society

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Rough surfaces have been shown to promote osseointegration, which is one of the keys for a successful dental implantation. Among the diverse treatments proposed to roughen zirconia, hydrofluoric acid (HF) etching appears to be a good candidate, however little is known about this process. In this work, the effect of HF concentration and etching time on the surface topography and chemistry of yttria-stabilized zirconia was assessed.Besides, to understand the etching mechanism, the reaction products present in solution and on the surface were characterized. The results indicate suitable parameters for a fast and uniform roughening of zirconia. The formation of adhered fluoride precipitates on the surface is reported for the first time and highlights the importance of cleaning after etching. Finally, it is shown that monitoring the time allows controlling the surface roughness, smooth-rough transition and fractal dimension, which should make possible the fabrication of implants with an optimal topography.

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Section: Evolution Of the Surface Topography Over Etching Timesupporting

confidence: 67%

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

Flamant

Marro

Rovira

et al. 2016

Journal of the European Ceramic Society

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“…This procedure has been shown to increase the surface hydrophilicity and provides a cleaner (reduced surface carbon concentration) surface by reducing the adsorption of air-borne contaminants 11,24) . The hydrophilic nature of each titanium surface is illustrated in Fig.…”

Section: Surface Analysismentioning

confidence: 99%

Titanium surface hydrophilicity enhances platelet activation

2014

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Titanium implant surface modification is a key strategy used to enhance osseointegration. Platelets are the first cells that interact with the implant surface whereupon they release a wide array of proteins that influence the subsequent healing process. This study therefore investigated the effect of titanium surface modification on the attachment and activation of human platelets. The surface characteristics of three titanium surfaces: smooth (SMO), micro-rough (SLA) and hydrophilic micro-rough (SLActive) and the subsequent attachment and activation of platelets following exposure to these surfaces were determined. The SLActive surface showed the presence of significant nanoscale topographical features. While attached platelets appeared to be morphologically similar, significantly fewer platelets attached to the SLActive surface compared to both the SMO and SLA surfaces. The SLActive surface however induced the release of the higher levels of chemokines β-thromboglobulin and platelet factor 4 from platelets. This study shows that titanium surface topography and chemistry have a significant effect on platelet activation and chemokine release.

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“…These ceramics are suitable for a variety of clinical applications, including: posts and cores 6,7) , dental implants 8,9) , orthodontic brackets 10,11) , and fixed-partial dentures [12][13][14][15] . Moreover, zirconia ceramic has a polycrystalline structure, which is acid resistant 5,16) .…”

Section: Introductionmentioning

confidence: 99%

Dental zirconia can be etched by hydrofluoric acid

et al. 2014

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The surface morphology and crystal structure change of dental zirconia after hydrofluoric acid (HF) etching were evaluated. Four groups of sintered zirconia specimens were 1) control group, 2) immersion in 9.5%HF at 25 o C for 1, 2, 3, or 24 h, 3) immersion in 9.5%HF at 80o C for 1, 3, 5, or 30 min and 4) immersion in 48%HF at 25 o C for 30 or 60 min. The specimens were evaluated under SEM and XRD. The SEM analysis revealed changes in surface topography for all the HF-etched zirconia specimens. The irregularities surface increased with increasingly longer immersion times and higher etching solution temperatures. The XRD analysis of the HFetched zirconia specimens revealed the presence of a crystalline monoclinic phase along with a tetragonal form. It was concluded HF can etch dental zirconia ceramic, creating micro-morphological changes. Tetragonal-to-monoclinic phase transformation was induced on the etched zirconia surface.

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Surface characterization of zirconia dental implants

Cited by 100 publications

References 22 publications

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

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

Titanium surface hydrophilicity enhances platelet activation

Dental zirconia can be etched by hydrofluoric acid

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