J Korean Acad Prosthodont.  2003 Dec;41(6):699-713.

Response of osteoblast-like cells on titanium surface treatment

Affiliations
  • 1Department of Prosthodontics, Graduate School, Seoul National University.
  • 2Department of Prosthodontics, Yonsei University, Yongdong Sevrance Hospital.
  • 3Department of Prosthodontics, University of Ulsan, Asan Medical Center.
  • 4Department of Prosthodontics, Sungkyunkwan University, School of Medicine.

Abstract

Statement of problem. Titanium is the most important material for biomedical and dental implants because of their high corrosion resistance and good biocompatibility. These beneficial properties are due to a protective passive oxide film that spontaneously forms on the surface. Purpose. The purpose of this study was to evaluate the responses of osteoblast-like cells on different surface treatments on Ti discs. Material and Methods. Group 1 represented the machined surface with no treatment. Group 2 surfaces were sandblasted with 50microm Al2O3 under 5 kgf/cm2 of pressure. Groups 3 and 4 were sandblasted under the same conditions. The samples were treated on a titanium oxide surface with reactive sputter depositioning and thermal oxidation at 600degree C (Group 3) and 800degree C (Group 4) for one hour in an oxygen environment. The chemical composition and microtopography were analyzed by XRD, XPS, SEM and optical interferometer. The stability of TiO2 layer was studied by potentiodynamic curve. To evaluate cell response, osteoblast extracted from femoral bone marrow of young adult rat were cultured for cell attachment, proliferation and morphology on each titanium discs. Results and Conclusion. The results were as follows : 1.Surface roughness values were, from the lowest to the highest, machined group, 800degree C thermal oxidation group, 600degree C thermal oxidation group and blasted group. The Ra value of blasted group was significantly higher than that of 800degree C thermal oxidation group (P=0.003), which was not different from that of 600degree C thermal oxidation group (P<0.05). 2. The degree of cell attachment was highest in the 600degree C thermal oxidation group after four and eight hours (P<0.05), but after 24 hours, there was no difference among the groups (P>0.05). 3. The level of cell proliferation showed no difference among the groups after one day, three days, and seven days (P>0.05). 4. The morphology and arrangement of the cells varied with surface roughness of the discs.

Keyword

Ti surface treatment; Microtopography analysis; Osteoblast response

MeSH Terms

Animals
Bone Marrow
Cell Proliferation
Corrosion
Dental Implants
Humans
Osteoblasts
Oxygen
Rats
Titanium*
Young Adult
Dental Implants
Oxygen
Titanium
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