Surface characterization, electrochemical properties and in vitro testing of hierarchically structured titanium surfaces

Mattisson, Ingela; Gretzer, Christina; Ahlberg, Elisabet

doi:10.1016/j.materresbull.2012.10.037

Cited by 3 publications

(5 citation statements)

References 44 publications

(55 reference statements)

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“…After three months, mucoperiosteal flaps were elevated bilaterally in the mandible and, using a non‐submerged technique, four implants, 3.6 × 11 mm (EV Astra Tech Implant System TM , Dentsply Implants IH AB) with two different surface characteristics (A and B) were installed on each side. The implant surface modification in group‐A implants was categorized as moderately rough according to Albrektsson and Wennerberg () and consisted of a combination of TiO‐blasting and acid‐etching (Sa 1.49 µm), while the surface modification in group B implants was categorized as smooth (Albrektsson & Wennerberg, ) and included only acid‐etching (Sa 0.36 µm) (Johansson, Gretzer, Jimbo, Mattisson, & Ahlberg, ; Mattisson, Gretzer, & Ahlberg, ; Thalji, Gretzer, & Cooper, ). The sequence of implant positioning was randomized between dogs but consistent between right and left side of the mandible within each animal.…”

Section: Methodscontrasting

confidence: 99%

Re‐osseointegration following reconstructive surgical therapy of experimental peri‐implantitis. A pre‐clinical in vivo study

Almohandes

Carcuac

Abrahamsson

et al. 2019

Clinical Oral Implants Res

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Objective To evaluate the effect of bone substitute materials on hard and soft tissue healing in reconstructive surgical therapy of experimental peri‐implantitis at implants with different surface characteristics. Material and methods Six female, Labrador dogs were used. 3 months after tooth extraction, four implants with two different surface characteristics (A and B) were installed on each side of the mandible. Experimental peri‐implantitis was induced 3 months later. During surgical treatment of peri‐implantitis, the implants were cleaned with curettes and cotton pellets soaked in saline. The implant sites were allocated to one of four treatment categories; (a) Group C; no augmentation, (b) Group T1; bone defect filled with deproteinized bovine bone mineral (c) Group T2; bone defect filled with a biphasic bone graft material, (d) Group T3; bone defect filled as T1 and covered with a collagen membrane. Clinical and radiological examinations were performed, and biopsies were obtained and prepared for histological analysis 6 months after peri‐implantitis surgery. Results Implant B (smooth surface) sites showed significantly (a) larger radiographic bone level gain, (b) enhanced resolution of peri‐implantitis lesions, and (c) larger frequency of re‐osseointegration than implant A (moderately rough surface) sites. Implant B sites also showed superior preservation of the mucosal margin. Differences between bone substitute materials and control procedures were overall small with limited advantages for T1 and T2 sites. Conclusion Healing following reconstructive surgical treatment of experimental peri‐implantitis was superior around implants with a smooth surface than implants with a moderately rough surface. Benefits of using bone substitute materials during surgical therapy were overall small.

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Section: Methodscontrasting

confidence: 99%

Re‐osseointegration following reconstructive surgical therapy of experimental peri‐implantitis. A pre‐clinical in vivo study

Almohandes

Carcuac

Abrahamsson

et al. 2019

Clinical Oral Implants Res

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“…The P25 particles attached to titanium show typical diffraction pattern with a ratio between anatase and rutile of ~4/1 [22]. For the TS + AT-I modification, no diffraction peaks from the oxide can be observed, which indicates that the precipitated layer is amorphous or too thin to be detected [16]. …”

Section: Resultsmentioning

confidence: 99%

“…The carbon signal is similar for all samples and is related to surface contamination. XPS for the AT-I modification has been studied in detail elsewhere and shows that the oxide film may contain oxalate from the formation process [16]. In this case, a small Ti metal signal is observed illustrating that some parts of the surface have a thin oxide film.…”

Section: Resultsmentioning

confidence: 99%

“…One reason for the slightly higher conductivity could be the presence of titanium hydride in the metal phase. However, for blasted samples, the conductivity for surface with the AT-I treatment was found to be lower than for the blasted sample [16]. …”

Section: Resultsmentioning

confidence: 99%

“…As a complement to the nanoparticle-coated surfaces, the nanostructured TS + AT-I (turned surface treated with oxalic acid and hydrofluoric acid) surface was included in this study. Details for the AT-I treatment have been published elsewhere [16]. Table 1 shows a description of the samples used.…”

Section: Methodsmentioning

confidence: 99%

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Electronic Properties ofTiO2Nanoparticles Films and the Effect on Apatite-Forming Ability

Löberg

Holmberg

Mattisson

et al. 2013

International Journal of Dentistry

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Nanoparticle-covered electrodes have altered properties as compared to conventional electrodes with same chemical composition. The changes originate from the large surface area and enhanced conduction. To test the mineralization capacity of such materials, TiO2 nanoparticles were deposited on titanium and gold substrates. The electrochemical properties were investigated using cyclic voltammetry and impedance spectroscopy while the mineralization was tested by immersion in simulated body fluid. Two types of nucleation and growth behaviours were observed. For smooth nanoparticle surfaces, the initial nucleation is fast with the formation of few small nuclei of hydroxyapatite. With time, an amorphous 2D film develops with a Ca/P ratio close to 1.5. For the rougher surfaces, the nucleation is delayed but once it starts, thick layers are formed. Also the electronic properties of the oxides were shown to be important. Both density of states (DOS) in the bandgap of TiO2 and the active area were determined. The maximum in DOS was found to correlate with the donor density (N d) and the active surface area. The results clearly show that a rough surface with high conductivity is beneficial for formation of thick apatite layers, while the nanoparticle covered electrodes show early nucleation but limited apatite formation.

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Integrated biomechanical and topographical surface characterization (IBTSC)

Löberg

Mattisson

Ahlberg

2014

Applied Surface Science

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Surface characterization, electrochemical properties and in vitro testing of hierarchically structured titanium surfaces

Cited by 3 publications

References 44 publications

Re‐osseointegration following reconstructive surgical therapy of experimental peri‐implantitis. A pre‐clinical in vivo study

Re‐osseointegration following reconstructive surgical therapy of experimental peri‐implantitis. A pre‐clinical in vivo study

Electronic Properties ofTiO2Nanoparticles Films and the Effect on Apatite-Forming Ability

Integrated biomechanical and topographical surface characterization (IBTSC)

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