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

2019; Quintessence Publishing Company; Volume: 34; Issue: 4 Linguagem: Inglês

10.11607/jomi.7350

1942-4434

Katsuhiko Masuda, Erick Ricardo Silva, Daniele Botticelli, Karol Alí Apaza Alccayhuaman, Samuel Porfírio Xavier,

Endodontics and Root Canal Treatments

To evaluate the healing after sinus floor augmentation at antrostomies prepared with either drills or a sonic instrument.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.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.The use of a sonic device to prepare the antrostomy resulted in similar healing outcomes in both the antrostomy and the elevated regions.