Maxillary Tuberosity
Pronunciation: too-ber-AH-sit-ee
The rounded posterior prominence of the maxilla behind the third molar region, important for surgical access and prosthetic considerations.
Full Definition
The maxillary tuberosity is the bulbous posterior extension of the maxilla that forms the posterolateral boundary of the maxillary sinus. This anatomical structure contains cancellous bone and is covered by a thick layer of soft tissue, making it a common site for bone harvesting in minor grafting procedures. The tuberosity may be enlarged (hypertrophic) and require reduction for proper denture fit or clearance for opposing mandibular teeth. During third molar extractions, the tuberosity is at risk for fracture due to its cancellous nature and may require careful surgical technique. Understanding tuberosity anatomy is essential for preventing oroantral communications during posterior maxillary procedures.
Usage
Usage note: May be abbreviated as 'tuberosity' when context is clear.
In Context
- "Tuberosity reduction was necessary to provide adequate clearance for the lower third molar." — Pre-prosthetic surgery report
- "Care was taken during extraction to avoid fracturing the weakened maxillary tuberosity." — Surgical technique note