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Sinus Floor Augmentation by Intraoral Endoscopic Approach for Biomaterial Study in a Rabbit Model.

Ivan Valdivia-Gandur1, Víctor Beltrán2, Eduardo Borie3

  • 1Biomedical Department, Universidad de Antofagasta, Antofagasta, Chile.

In Vivo (Athens, Greece)
|October 31, 2019
PubMed
Summary

A new minimally invasive surgical model for sinus floor augmentation (SFA) in rabbits was developed. This refined technique ensures normal healing and minimal animal morbidity, improving surgical predictability for future research.

Keywords:
Sinus floor augmentationanimal modelsbone regenerationendoscopy

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Area of Science:

  • Oral and Maxillofacial Surgery
  • Veterinary Surgery
  • Biomaterials Science

Background:

  • Sinus floor augmentation (SFA) is a common procedure in dental implantology.
  • Existing animal models for SFA may have limitations in terms of invasiveness and predictability.
  • A need exists for a refined, minimally invasive surgical model for SFA research.

Purpose of the Study:

  • To develop and evaluate a novel, minimally invasive, endoscopically assisted surgical model for sinus floor augmentation (SFA) in rabbits.
  • To assess the feasibility, safety, and predictability of the developed SFA model.
  • To establish a reliable preclinical platform for SFA research.

Main Methods:

  • Anatomical dissection was performed on two rabbits to refine the surgical approach.
  • An endoscopically assisted intraoral SFA procedure was performed unilaterally in six rabbits.
  • An allograft biomaterial was placed in the created subantral space, and outcomes were monitored for 4 weeks.
  • Cone-beam computerized tomography (CBCT) was used for SFA verification, alongside monitoring of animal health and behavior.

Main Results:

  • All rabbits survived the procedure with no significant complications such as bleeding or infection.
  • Mild inflammation was observed, with no adverse effects on feeding, weight, feces, or behavior.
  • Normal tissue healing was confirmed, and CBCT verified successful augmentation.

Conclusions:

  • The developed endoscopically assisted SFA model in rabbits is a safe and effective refinement of existing techniques.
  • This minimally invasive approach reduces animal morbidity and enhances surgical predictability.
  • The model provides a reliable platform for future experimental studies on sinus floor augmentation and biomaterials.