IADR Abstract Archives

Qualitative Evaluation of Collagen Fiber Orientation and Secondary Osteons in Peri-implant Bone Tissue around Loaded and Unloaded Implants in the Mini-pig

Objectives: Immediate loading of dental implants is one of currently most examined topics in implant dentistry. Utilizing screw implants with a micro-structured surface and bone quality adapted insertion procedures achieve osseointegration if implants are primary stable and splinted with the superstructure. Never the less the information about the remodeling and the peri-implant bone formation is very poor. Methods: A study on six mini pigs was performed to evaluate the peril-implant bone formation of loaded and unloaded implants. In the mandible and the maxilla 4 to 6 XiVE-Implants (FRIADENT, Mannheim, Germany) with a micro-structured experimental surface were placed. Histomorphometry was performed using a light microscope in reflected polarized light microscopy (Laborlux S, Leitz, Wetzlar, Germany) connected to a high-resolution video camera (3CCD, JVC KY-F55B) and interfaced to a monitor and PC (Intel Pentium III 1200 MMX). This optical system was associated with a digitizing pad (Matrix Vision GmbH) and a histomorphometry software package with image capturing capabilities (Image-Pro Plus 4.5, MediaCybernetics, Immagini & Computer Snc, Milano, Italy). Results: Implants showed osseointegration if the average insertion torque of the implants within one bridge was above 35 Ncm. If the primary stability of the bridge was below 35 Ncm all implants of this quadrant were lost after four month. The loaded implants showed collagen fibers, which were oriented in a more circular way; and a higher quantity of secondary osteons was present. In comparison the unloaded implants had collagen fibers with a more parallel orientation and a higher quantity of marrow spaces was present. Conclusions: This study demonstrate that immediate loaded implants show a higher degree of bone formation and remodeling after 4 month in comparison to unloaded implants.
IADR/PER General Session
2003 IADR/PER General Session (Goteborg, Sweden)
Goteborg, Sweden
2003
2944
Implantology Research
  • Neugebauer, Jörg  ( University of Cologne, Cologne, N/A, Germany )
  • Thams, U  ( University of Madrid, Chieti, N/A, Italy )
  • Steveling, Helmut  ( Zentrum fur Zahn Mund und Kieferheilkunde, Heidelberg, N/A, Germany )
  • Piattelli, Adriano  ( University of Chieti, Chieti, N/A, Italy )
  • Zöller, Joachim E  ( U F R D'Odontologia-Stomatologie, Cologne, N/A, Germany )
  • Oral
    Bone Response to Surfaces/Scaffolds
    06/28/2003