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Healing at implants with and without primary bone contact. An experimental study in dogs
A Scipioni1, G B Bruschi, M Giargia
1Department of Periodontology, Göteborg University, Sweden.
Clinical Oral Implants Research
|February 1, 1997
Summary
This study shows that bone regeneration and osseointegration can occur in titanium fixtures placed in surgically created bone defects. Even implants with initial lack of direct bone contact achieved successful osseointegration and healthy peri-implant tissues.
Area of Science:
- Dental Implantology
- Oral Surgery
- Biomaterials Science
Background:
- Alveolar ridge defects pose challenges for dental implant placement.
- Predictable bone regeneration and osseointegration are crucial for implant success.
Purpose of the Study:
- To evaluate ridge expansion using a specific technique in dogs.
- To assess osseointegration of titanium fixtures in surgically created bone defects.
- To compare osseointegration in defects versus non-defective bone sites.
Main Methods:
- Ridge expansion surgery was performed on beagle dogs with reduced alveolar ridges.
- Titanium plasma-sprayed fixtures were placed in surgically created defects and control sites.
- Histological examination was conducted 3 months after fixture installation and 4 months of plaque control.
Main Results:
- Bone regeneration and osseointegration were observed in fixtures within surgically created defects.
- The amount of bone-to-implant contact was comparable between defect and control sites.
- Peri-implant mucosa exhibited similar dimensions and composition at both test and control implants.
Conclusions:
- Ridge expansion techniques can facilitate predictable bone regeneration.
- Osseointegration is achievable even in titanium fixtures placed in surgically created bone defects.
- Implants in defects showed comparable outcomes to those in non-defective bone, suggesting potential for treating compromised ridges.