implant special

Maxillary sinus mucous retention cyst removal: thoughts?

Last Updated June 15, 2017
Reviewed By:  OsseoNews Team

I have a 31-year old healthy male with recent history of extracted maxillary right first molar due to failed root canal treatment. The patient rejects removable and fixed partial denture options but agreed to augmenting the sinus in preparation for implant placement. CBCT revealed large maxillary sinus mucous retention cyst. Treatment plan was to remove cyst with delayed graft. The sinus was exposed, cyst enucleated and sinus chamber thoroughly flushed and evacuated with sterile saline. Clinically, I could visualize the medial and inferior sinus walls. The access was tacked closed with Mem-Lok membrane and tissue sent for biopsy. Patient was prescribed short-term steroids and Flagyl/Augmentin combo. 4-day post-evaluation patient is asymptomatic and surgical site is healing well.

The immediate post-surgical CBCT still exhibited radiopaque density in the inferior sinus half. My thoughts are these are remnants of the thickened inflammatory mucosal lining. Am I correct to expect that this will gradually subside over time? I plan to rescan and hopefully graft in 4 months. Any comments or thoughts are appreciated.











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