Surface modifications induced by ns and sub-ps excimer laser pulses on titanium implant material

M. Bereznai, I. Pelsöczi, Z. Tóth, K. Turzó, M. Radnai, Z. Bor, A. Fazekas

Research output: Contribution to journalArticle

109 Citations (Scopus)

Abstract

Medical implants used in oral and orthopaedic surgery are mainly produced from titanium. Their biological behaviour, e.g. osseointegration, essentially depends on both the chemical composition and the morphology of the surface. Modifications achieved by excimer laser irradiation of titanium samples were investigated in order to improve their surface characteristics so as to facilitate biointegration. To enlarge the effective interfacial area of bone-implant contact, holes were ablated by laser pulses of ns or sub-ps length. During ns ablation, crown-like projecting rims formed around the borders of the holes. Ultra-short (0.5ps) KrF excimer laser pulses were successfully applied to avoid these undesirable formations. Since a smooth dental implant surface is necessary to maintain a healthy connection with the soft tissues, laser polishing of samples was investigated, too. Irradiation with a series of ns laser pulses resulted in effective smoothing, as measured with atomic force microscope. X-ray photoelectron spectroscopy analysis of the laser-polished titanium surface revealed that laser treatment led to a decrease of the surface contamination and in thickening of the oxide layer. X-ray diffraction measurements demonstrated that the original α-titanium crystal structure was preserved.

Original languageEnglish
Pages (from-to)4197-4203
Number of pages7
JournalBiomaterials
Volume24
Issue number23
DOIs
Publication statusPublished - Oct 2003

Fingerprint

Excimer Lasers
Excimer lasers
Titanium
Surface treatment
Laser pulses
Lasers
Osseointegration
Photoelectron Spectroscopy
Dental prostheses
Dental Implants
Oral Surgery
Orthopedics
Laser beam effects
Ablation
Polishing
Crowns
X-Ray Diffraction
Oxides
Surgery
Bone

Keywords

  • Laser ablation
  • Osseointegration
  • Surface modification
  • Surface roughness
  • Titanium

ASJC Scopus subject areas

  • Biotechnology
  • Bioengineering
  • Biomedical Engineering

Cite this

Surface modifications induced by ns and sub-ps excimer laser pulses on titanium implant material. / Bereznai, M.; Pelsöczi, I.; Tóth, Z.; Turzó, K.; Radnai, M.; Bor, Z.; Fazekas, A.

In: Biomaterials, Vol. 24, No. 23, 10.2003, p. 4197-4203.

Research output: Contribution to journalArticle

Bereznai, M. ; Pelsöczi, I. ; Tóth, Z. ; Turzó, K. ; Radnai, M. ; Bor, Z. ; Fazekas, A. / Surface modifications induced by ns and sub-ps excimer laser pulses on titanium implant material. In: Biomaterials. 2003 ; Vol. 24, No. 23. pp. 4197-4203.
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