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Updated: Jan 29, 2026

Calvarial Model of Bone Augmentation in Rabbit for Assessment of Bone Growth and Neovascularization in Bone Substitution Materials
Published on: August 13, 2019
Antrostomy Preparation for Maxillary Sinus Floor Augmentation Using Drills or a Sonic Instrument: A Microcomputed
Purpose:
To evaluate the healing after sinus floor augmentation at antrostomies prepared with either drills or a sonic instrument.
Materials And Methods:
Sinus mucosa elevation was performed bilaterally in 18 rabbits. The antrostomy was prepared with either drills or a sonic instrument. The elevated space was filled with a collagenated porcine bone, and the access antrostomy was covered by a collagen membrane. The animals were euthanized in groups of six after 2, 4, and 8 weeks of healing. Microcomputed tomorgraphy (microCT) and a histologic analysis was performed.
Results:
After 8 weeks of healing, remaining defects occupying about 28.9% and 26.0% of the antrostomy were found at the microCT analysis. At the histologic analysis, new bone was formed from the margins of the antrostomy, reaching the central region over time. After 8 weeks of healing, 29.1% ± 18.6% and 28.4% ± 15.6% of new mineralized bone was occupying the analyzed zone in the antrostomy at the drill and sonic sites, respectively.
Conclusion:
The use of a sonic device to prepare the antrostomy resulted in similar healing outcomes in both the antrostomy and the elevated regions.
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