Question 124 · LDEK · Removable appliances
The screw that enables the jaw to expand in three directions is:
- A. Fischer screw.
- B. Bertoni’s screw.
- C. Przylipiak’s screw.
- D. Beutelspacher screw.
- E. Hyrax.
Hint
Look for the screw that splits a plate into three parts, widening both sides while advancing the anterior segment.
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