A. Maxillary permanent first premolars
B. Maxillary permanent lateral incisors
C. Maxillary permanent canines
D. Maxillary permanent second molars
# The average "Leeway space" available in each half of the maxilla is approximately:
A. 0.9 mm
B. 2.9 mm
C. 4.0 mm
D. 6.9 mm