denture flange
The portion of a denture base that extends from the cervical areas of the artificial teeth to the border of the denture, occupying the vestibular space.
Full Definition
The denture flange is the peripheral extension of the denture base that fills the buccal and labial vestibules of the oral cavity. It plays a critical role in retention and stability by forming a peripheral seal against the soft tissues. The flange is described as labial, buccal, or lingual depending on its location, and its thickness and length must be carefully controlled during fabrication. Over-extended flanges cause soft tissue irritation, while under-extended flanges compromise retention. Laboratory prescriptions frequently specify flange dimensions based on the clinician's impression tray and border-moulding records.
Usage
Usage note: The term 'flange' and 'border' are sometimes used interchangeably in clinical notes, but in laboratory contexts 'flange' refers to the body of the extension while 'border' refers specifically to its edge.
In Context
- "The buccal denture flange was reduced by 1 mm following the patient's complaint of sulcus irritation." — Laboratory adjustment record
- "Correct flange length was confirmed against the border-moulded impression before processing." — Fabrication checklist