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Healing at fluoride-modified implants placed in wide marginal defects: an experimental study in dogs.

Journal article
Authors Ingemar Abrahamsson
Jean-Pierre Albouy
Tord Berglundh
Published in Clinical oral implants research
Volume 19
Issue 2
Pages 153-9
ISSN 0905-7161
Publication year 2008
Published at Institute of Odontology
Pages 153-9
Language en
Links dx.doi.org/10.1111/j.1600-0501.2007...
Keywords dental implants, fluoride modified surface, histology, osseointegration, osseous defects, titanium
Subject categories Biomaterials, Surgical research

Abstract

Objective: To study the healing at fluoride-modified implants placed in wide circumferential defects. Material and methods: Six mongrel dogs were used. The mandibular premolars and first molars were extracted. Three months later four implants were placed in one side of the mandible of each dog. The control implants (MicroThread(trade mark)) had a TiOblast surface, while the test implants (OsseoSpeed(trade mark)) had a fluoride-modified surface. Two implants of each type were placed. The marginal 50% of the prepared canal was widened using step drills. Following installation a 1 mm wide gap occurred between the implant surface and the bone wall in the defect. All implants were submerged. The installation procedure was repeated in the opposite side of the mandible 4 weeks after the first implant surgery. Two weeks later the animals were euthanized and block biopsies containing the implant and surrounding tissues were prepared for histological analysis. Results: The histological analysis revealed that a significantly larger area of osseointegration was established within the defect at fluoride-modified implants than at implants with a TiOblast surface after 6 weeks of healing. Further, the degree of bone-to-implant contact within the defect area was larger at fluoride-modified implants than at the TiOblast implants. Conclusion: It is suggested that the fluoride-modified implant surface promotes bone formation and osseointegration.

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