Obturator
Pronunciation: OB-tyoo-ray-tor
A prosthetic device used to close or occlude an opening in the palate resulting from surgery, trauma, or a congenital defect such as a cleft palate.
Full Definition
An obturator is a specialised prosthesis that restores form and function following partial or total resection of the maxilla or hard palate. It prevents communication between the oral and nasal cavities, thereby enabling speech, swallowing, and mastication. Obturators are classified as immediate (surgical), interim, and definitive, reflecting the stage of post-operative healing. Editors must distinguish an obturator from a conventional removable partial denture, although the two share some structural features. The term 'obturator' is also used in anaesthesia for a separate instrument; in prosthodontic documents the palatal prosthetic context must be clear.
Usage
Usage note: Specify the stage of the obturator (surgical/immediate, interim, or definitive) in clinical documents. Do not confuse with a 'speech-aid prosthesis' or 'palatal lift prosthesis', which address different clinical problems.
In Context
- "An interim obturator was placed at the time of surgery to restore palatal continuity." — Surgical prosthodontics operative note
- "The definitive obturator was fabricated six months post-resection once tissue maturation was confirmed." — Maxillofacial prosthetics case summary