Influence of extracellular matrix coatings on implant stability and osseointegration: An animal study

Research output: Contribution to journalResearch articleContributedpeer-review

Contributors

  • Bernd Stadlinger - , Department of Oral and Maxillofacial Surgery (Author)
  • Eckart Pilling - , Department of Oral and Maxillofacial Surgery (Author)
  • Matthias Huhle - , Department of Oral and Maxillofacial Surgery (Author)
  • Ronald Mai - , Department of Oral and Maxillofacial Surgery (Author)
  • Susanne Bierbaum - , Chair of Biomaterials, Max Bergmann Center of Biomaterials Dresden (Author)
  • Ricardo Bernhardt - , Chair of Biomaterials, Max Bergmann Center of Biomaterials Dresden (Author)
  • Dieter Scharnweber - , Chair of Biomaterials, Max Bergmann Center of Biomaterials Dresden (Author)
  • Eberhard Kuhlisch - , Institute for Medical Informatics and Biometry (Author)
  • Ute Hempel - , Institute of Physiological Chemistry (Author)
  • Uwe Eckelt - , Department of Oral and Maxillofacial Surgery (Author)

Abstract

Aim of the present study was to test the hypothesis that the application of components of the extracellular matrix such as glycosaminoglycans used as implant surface coatings in combination with collagen, with and without growth factor, can lead to enhanced ossification and thus improve implant stability compared with collagen coatings alone. Twenty miniature pigs received 120 experimental titanium implants in the mandible. Three types of surface coatings were created: (1) collagen type I (coll), (2) collagen type I/chondroitin sulphate (coll/CS), (3) collagen type I/chondroitin sulphate/BMP-4 (coll/CS/BMP). Periimplant bone formation was assessed within a defined recess along the length axis of the implant. Bone-implant contact (BIC) and bone volume density (BVD) were determined, using both histomorphometry and synchrotron radiation micro computed tomography (SRμCT). To measure implant stability, resonance frequency analysis was applied after implantation and 1, 3, 7, and 22 weeks after placement. BIC was highest for coll/CS coated implants, followed by coll, p = 0.082. Histomorphometric BVD did not significantly change for any coating. SRμCT analysis showed an increased BVD for collagen coated implants, compared with the other two surface coatings. Implant stability showed a decrease for all coatings up to the third week. At 22 weeks, all coatings showed an increase in stability without reaching their initial level. Highest stability was reached for coll coated implants, p = 0.051. It was concluded that collagen and coll/CS implant coatings have advantageous characteristics for peri-implant bone formation, compared with the further integration of BMP-4.

Details

Original languageEnglish
Pages (from-to)222-231
Number of pages10
JournalJournal of Biomedical Materials Research - Part B Applied Biomaterials
Volume83
Issue number1
Publication statusPublished - Oct 2007
Peer-reviewedYes

External IDs

PubMed 17318830

Keywords

ASJC Scopus subject areas

Keywords

  • Collagen, Dental/endosteal implant, Extracellular matrix, Histomorphometry, Implant interface