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Surgically modelled reduced ridge in the beagle dog
D Kohavi1, S R Pollack, G Brighton
1Hebrew University-Hadassah School of Dental Medicine, Jerusalem, Israel.
Clinical Oral Implants Research
|July 1, 1991
Summary
Guided tissue regeneration (GTR) effectively creates reduced alveolar ridges in dogs. Membrane placement with proper sealing is crucial for predictable bone healing in experimental ridge reduction.
Area of Science:
- Oral surgery
- Regenerative medicine
- Veterinary dentistry
Background:
- Alveolar ridge reduction presents challenges in reconstructive surgery.
- Guided tissue regeneration (GTR) principles offer potential solutions for bone defects.
Purpose of the Study:
- To describe a reproducible surgical method for creating reduced alveolar ridges in dogs.
- To evaluate the efficacy of GTR using polytetrafluoroethylene membranes in experimental mandibular defects.
Main Methods:
- Four dogs underwent surgical creation of 3 mandibular defects on each side.
- Polytetrafluoroethylene membranes were placed on 4 defects; 2 were covered by gingival flaps only.
- Defects were assessed after 6 and 12 weeks of healing.
Main Results:
- Bucco-lingual width measurements indicated bone healing up to the membrane in GTR defects.
- Uncovered defects showed increased bony wall width over 12 weeks.
- Histology revealed excellent bone-to-membrane adaptation in well-sealed defects, with unpredictable healing in incompletely sealed defects.
Conclusions:
- GTR is a valuable tool for creating experimentally reduced alveolar ridges.
- Successful ridge reduction is dependent on complete membrane sealing to prevent connective tissue ingrowth.
- The described surgical method provides a reproducible model for studying alveolar ridge regeneration.