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Evaluation of a subcutaneously implanted hydroxylapatite-avitene mixture in rabbits
Summary
Microfibrillar collagen hemostatic agent (Avitene) mixed with hydroxylapatite improved surgical handling in rabbit mandible implants. Histology confirmed an acceptable host response, preserving hydroxylapatite characteristics.
Area of Science:
- Biomaterials Science
- Surgical Innovation
- Veterinary Medicine
Background:
- Hydroxylapatite is a widely used bone substitute material.
- Surgical manipulation of bone graft materials can be challenging.
- Hemostatic agents are used to control bleeding during surgery.
Purpose of the Study:
- To evaluate the effect of mixing Avitene with hydroxylapatite on surgical handling.
- To assess the host response and material characteristics of the composite implant in vivo.
- To determine the suitability of this composite for mandibular reconstruction.
Main Methods:
- Avitene and hydroxylapatite were mixed and implanted subcutaneously in rabbit mandibles.
- Surgical manipulation of the composite was assessed qualitatively.
- Radiographic and histological examinations were performed at 1, 3, and 6 months post-implantation.
Main Results:
- The Avitene-hydroxylapatite mixture significantly enhanced the ease of surgical manipulation.
- Radiographic analysis showed no adverse effects on the hydroxylapatite implant.
- Histological examination revealed an acceptable host response with no degradation of implant properties.
Conclusions:
- Mixing microfibrillar collagen hemostatic agent with hydroxylapatite improves its surgical handling.
- The composite material elicits an acceptable host response and maintains the favorable characteristics of hydroxylapatite.
- This combination shows promise as a biomaterial for craniofacial and mandibular reconstruction.