Related Experiment Videos
Tissue reactions to abutment shift: an experimental study in dogs
Ingemar Abrahamsson1, Tord Berglundh, Satoshi Sekino
1Department of Periodontology, Sahlgrenska Academy, Gothenburg University, Gothenburg, Sweden. ingemar.abrahamsson@odontologi.gu.se
Clinical Implant Dentistry and Related Research
|October 11, 2003
Summary
Switching from a healing abutment to a permanent dental implant abutment did not affect tissue reactions. The resulting transmucosal attachment dimensions and quality were comparable to those from second-stage surgery.
Area of Science:
- Dental Implantology
- Periodontology
- Biomaterials Science
Background:
- Standard dental implant protocols involve healing abutments before permanent abutment placement.
- Tissue response to the transition from healing to permanent abutments is not well-documented.
Purpose of the Study:
- To investigate tissue reactions following the removal of healing abutments and placement of permanent abutments in dental implants.
Main Methods:
- Six beagle dogs received dental implants in extracted premolar regions.
- Healing abutments were compared with a Uni-abutment, followed by replacement with permanent abutments.
- Histometric, morphometric, and radiographic analyses were performed after 6 months.
Main Results:
- No significant differences in barrier epithelium length, connective tissue attachment height, or marginal bone levels were observed between abutment groups.
- Most radiographic bone loss occurred early; minimal changes were noted over the subsequent 6 months.
Conclusions:
- Replacing healing abutments with permanent ones establishes a transmucosal attachment.
- The quality and dimensions of this attachment are similar to those achieved with second-stage surgery abutments.