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Early healing of implants placed into fresh extraction sockets: an experimental study in the beagle dog. De novo bone formation.

Authors :
Vignoletti, Fabio
Johansson, Carina
Albrektsson, Tomas
de Sanctis, Massimo
San Roman, Fidel
Sanz, Mariano
Source :
Journal of Clinical Periodontology. Mar2009, Vol. 36 Issue 3, p265-277. 13p. 2 Color Photographs, 8 Diagrams, 4 Charts, 10 Graphs.
Publication Year :
2009

Abstract

Objectives: Describe the early phases of tissue integration in implants placed into fresh extraction sockets and test whether a new implant surface nano-topography (DCD nano-particles, Nanotiteā„¢) promotes early osseointegration when compared with minimally rough surface implants (DAE, Osseotite®). Material and Methods: Sixteen beagle dogs received 64 test and control implants randomly installed into the distal socket of 3P3 and 4P4. Histomorphometric analysis of bone to implant contact (BIC) and bone area was performed at 4 h, 1, 2, 4 and 8 weeks. Results: Wound healing initiated with a coagulum that was substituted by a provisional matrix at 1 week. Bone formation started concomitant to a marked bone resorption. At 2 weeks, woven bone formation was evident and gradually remodelled into lamellar bone at 4 and 8 weeks. BIC increased similarly throughout the study in both groups with a tendency to higher percentages for the test devices at 2 and 4 weeks. The influence of the DCD nano-particles was more evident at the fourth premolar site. Conclusion: Osseointegration occurred similarly at both implant groups, although the socket dimension appeared to influence bone healing. It is suggested that the enhanced nano-topography has a limited effect in the immediate implant surgical protocol. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
03036979
Volume :
36
Issue :
3
Database :
Academic Search Index
Journal :
Journal of Clinical Periodontology
Publication Type :
Academic Journal
Accession number :
36460448
Full Text :
https://doi.org/10.1111/j.1600-051X.2008.01363.x