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Advances in Dental Research
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Adv Dent Res 13:38-48, June, 1999
© 1999 SAGE Publications

Implant Surface Characteristics Modulate Differentiation Behavior of Cells in the Osteoblastic Lineage

Z. Schwartz

Department of Orthopaedics, Hebrew University Jerusalem, Israel

C.H. Lohmann

Department of Orthopaedics, University of Gottingen, Germany

J. Oefinger

Department of Orthopaedics

L.F. Bonewald

Department of Medicine/Endocrinology University of Texas Health Science Center at San Antonio 7703 Floyd Curl Drive San Antonio, Texas 78284-7774, USA

D.D. Dean

Department of Orthopaedics

B.D. Boyan

Department of Orthopaedics

This paper reviews the role of surface roughness in the osteogenic response to implant materials. Cells in the osteoblast lineage respond to roughness in cell-maturation-specific ways, exhibiting surface-dependent morphologies and growth characteristics. MG63 cells, a human osteoblast-like osteosarcoma cell line, respond to increasing surface roughness with decreased proliferation and increased osteoblastic differentiation. Alkaline phosphatase activity and osteocalcin production are increased. Local factor production is also affected; production of both TGF-β1 and PGE2 is increased. On rougher surfaces, MG63 cells exhibit enhanced responsiveness to 1,25-(OH)2D3. Prostaglandins mediate the effects of surface roughness, since indomethacin prevents the increased expression of differentiation markers in these cells.

Key Words: Implants • titanium • Ti-6Al-4V • osteoblasts • surface roughness • TGF-β • PGE2 • indomethacin • 1,25-(OH)2D3 • alkaline phosphatase • osteocalcin • MG63 cells.

Advances in Dental Research, Vol. 13, No. 1, 38-48 (1999)
DOI: 10.1177/08959374990130011301
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