LOGIN
 
Share Page:
Back

Volume 21 , Issue 5
September/October 2008

Pages 437–444


Influence of Static Overload on the Bony Interface Around Implants in Dogs

Yasunari Miyamoto, DDS, PhD/Katsunori Koretake, DDS, PhD/Makoto Hirata, DDS, PhD/Takayasu Kubo, DDS, PhD/Yasumasa Akagawa, DDS, PhD


PMID: 18950068

Purpose: The aim of this study was to investigate bony changes around selectively overloaded implants in dogs. Materials and Methods: Twelve adult male beagles were used: 4 animals each for control, 4-week-load, and 12-week-load groups. Three implants were placed on the right side of each of the 12 animals and the time point designated as the study’s baseline. Superstructures were then fabricated and attached only in the 2 implant-loaded groups 12 and 20 weeks following implant placement. Each lower distal implant was then fit with a cantilever-type superstructure extending in a mesial direction so as to be able to generate a controlled overload. The mesial and central implants were attached via superstructures equipped with a stainless steel screw, which could be tightened to create a controlled overload force. The force was induced by a controlled static 250-µm submerging of the cantilever of the distal implant. After 24 weeks, tissue specimens including implants were evaluated histologically and histomorphometrically. Results: Numerous fluorescence-labeled bone areas were noted in the 4-week-load group, showing a high remodeling activity. Marginal bone loss was significantly greater in the 12-week-load group than in the 4-week-load group. The ratio of fluorescence-labeled bone area in the inner thread region was significantly higher in the 4-week-load group than in the 12-week-load group. Conclusions: These findings demonstrate that static overload-induced forces can elicit changes in peri-implant bone in experimental animals. Int J Prosthodont 2008;21:437–444.


Full Text PDF File | Order Article

 

 
Get Adobe Reader
Adobe Acrobat Reader is required to view PDF files. This is a free program available from the Adobe web site.
Follow the download directions on the Adobe web site to get your copy of Adobe Acrobat Reader.

 

© 2017 Quintessence Publishing Co, Inc

IJP Home
Current Issue
Ahead of Print
Archive
Author Guidelines
About
Accepted Manuscripts
Submission Form
Submit
Reprints
Permission
Advertising
Quintessence Home
Terms of Use
Privacy Policy
About Us
Contact Us
Help