Immediately or delayed sinus augmentation after pseudocyst removal: A randomized trial

Area of Science:

• Oral and Maxillofacial Surgery
• Dental Implantology
• Regenerative Medicine

Background:

• Pseudocysts in the jaw can necessitate bone grafting procedures like sinus augmentation.
• Timing of sinus augmentation relative to pseudocyst removal impacts clinical outcomes.

Purpose of the Study:

• To compare clinical and histological results of sinus augmentation performed immediately versus 3 months after pseudocyst removal.
• To evaluate implant survival, bone resorption, complications, and patient satisfaction in a prospective randomized controlled study.

Main Methods:

• 33 sinus augmentations in 31 patients: one-stage (immediate) vs. two-stage (3-month delay) after pseudocyst removal.
• Histomorphometric analysis of bone biopsies at 6 months post-op.
• Assessment of implant survival, marginal bone loss, complications, and Visual Analogue Scale (VAS) for patient-reported outcomes.

Main Results:

• Comparable mineralized bone ratios between immediate and delayed augmentation (1.1% difference).
• One-stage group experienced graft leakage and acute sinusitis; two-stage group had no such complications.
• Higher median VAS scores for overall acceptance in the immediate group (1.4 increase).

Conclusions:

• Both immediate and delayed sinus augmentation achieve comparable histological results with low complication rates.
• The one-stage procedure offers a shorter treatment duration and higher patient satisfaction but is technically demanding.
• Further research may explore optimizing the one-stage technique for broader application.