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Immediate implants placed into infected sites: a histomorphometric study in dogs
A B Novaes1, G M Vidigal Júnior, A B Novaes
1Graduate Periodontology, School of Dentistry, Federal University of Rio de Janeiro, Brazil. novaesjr@forp.usp.br
Summary
Chronic periapical lesions in dogs did not prevent successful immediate dental implant placement. Osseointegration rates were similar in infected and healthy sites, suggesting implants can be placed in compromised areas with proper care.
Area of Science:
- Oral and Maxillofacial Surgery
- Dental Implantology
- Periodontology
Background:
- Periapical lesions represent chronic infections that may compromise dental implant success.
- Immediate implant placement offers potential benefits but requires careful consideration of the surrounding bone condition.
Purpose of the Study:
- To evaluate the effect of chronically infected sites on the immediate placement and osseointegration of dental implants.
- To determine if periapical pathosis is a contraindication for immediate implant placement.
Main Methods:
- Periapical lesions were induced in premolars of four dogs, with contralateral teeth serving as controls.
- After nine months, teeth were extracted, and 28 IMZ implants were immediately placed.
- Histomorphometric analysis and clinical/radiographic evaluation were performed after a 12-week healing period.
Main Results:
- All implant sites healed without inflammation or exudation.
- Implants were clinically immobile and radiographically integrated with normal bone.
- Osseointegration rates were 28.6% for experimental (infected) sites and 38.7% for control sites, with no statistical significance.
Conclusions:
- Chronically infected sites with periapical lesions may not be absolute contraindications for immediate implant placement.
- Careful clinical management, including preoperative and postoperative care, is crucial for successful outcomes.