Question 139 · LDEK · Removable appliances
Which of the follwing is the multisectioned screw used in lower plates in the cases of incisor crowding when the tooth protrusion can be achieved?
- A. Przylipiak screw.
- B. Bertoni screw.
- C. Fisher screw.
- D. Beutelspacher screw.
- E. Schwarz screw.
Hint
Look for the multi-section screw that advances individual anterior segments in a lower plate.
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