leeway space

leeway space,

the amount by which the space occupied by the primary canine and first and second primary molars exceeds that occupied by the canine and premolar teeth of the secondary dentition, usually averaging 1.7 mm on each side of the dental arch.

---

leeway space,

n the arch circumference difference between the primary canine, first primary and second primary molars, and the permanent canine and the first and second premolars. According to Black's means, the maxillary arch leeway space is 1.9 mm, and the mandibular arch leeway space is 3.4 mm.