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Volume 34 , Issue 4
July/August 2019

Pages 819827

Antrostomy Preparation for Maxillary Sinus Floor Augmentation Using Drills or a Sonic Instrument: A Microcomputed Tomography and Histomorphometric Study in Rabbits

Katsuhiko Masuda, DDS, PhD/Erick Ricardo Silva, DDS, MSc/Daniele Botticelli, BMBS, PhD/Karol Al. Apaza Alccayhuaman, DDS/Samuel P. Xavier, DDS, PhD

PMID: 30768660
DOI: 10.11607/jomi.7350

Purpose: To evaluate healing after sinus floor augmentation at antrostomies prepared with either a drill or a sonic instrument. Materials and Methods: Sinus mucosa elevation was performed bilaterally in 18 rabbits. The antrostomy was prepared with either a drill 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 tomography and a histologic analysis were performed. Results: After 8 weeks of healing, remaining defects occupying about 28.9% and 26.0% of the antrostomy were found in the microcomputed tomography analysis. In 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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