Maxillofacial Prosthetics — Obturators
An obturator closes a palatal/maxillary defect (commonly post-maxillectomy or cleft) to restore speech, swallowing and esthetics.
Sequence of Obturators
- Surgical obturator — placed at the time of surgery; supports the packing and restores palatal contour immediately.
- Interim (temporary) obturator — during healing as the defect remodels.
- Definitive obturator — final prosthesis once healing is complete (usually 3-6 months).
Aramany Classification
Classifies maxillectomy defects to guide RPD-style design of the definitive obturator (Class I = resection along the midline, etc.). Remaining teeth provide retention and support.
Goals
Separate the oral and nasal/sinus cavities, restore intelligible speech, allow mastication, and provide esthetic support to the midface.
Exam Tips ⭐
Order: Surgical → Interim → Definitive obturator. Aramany classification is for maxillectomy defects.
📝 Practice MCQs — Maxillofacial Prosthetics — Obturators
Q1. The obturator placed at the time of surgery is the:
A. Definitive obturator
B. Interim obturator
C. Surgical obturator
D. Feeding plate
Show Answer
✅ Answer: C
The surgical obturator is delivered at the time of resection.
Q2. The Aramany classification is used for:
A. Cleft lip
B. Maxillectomy (palatal) defects
C. Mandibular defects
D. TMJ disorders
Show Answer
✅ Answer: B
Aramany classifies maxillary/palatal resection defects for obturator design.
Q3. The correct sequence of obturators is:
A. Definitive → Interim → Surgical
B. Surgical → Interim → Definitive
C. Interim → Surgical → Definitive
D. Surgical → Definitive → Interim
Show Answer
✅ Answer: B
Surgical, then interim during healing, then definitive.
Q4. A key functional goal of an obturator is to:
A. Increase bone density
B. Separate oral and nasal cavities
C. Whiten teeth
D. Erupt teeth
Show Answer
✅ Answer: B
Obturators restore the oronasal seal for speech and swallowing.
📧 Get Free NEET MDS MCQs in Your Inbox
50 high-yield MCQs + mnemonics + AI study tips — completely free
No spam. Unsubscribe anytime.