Maximum part of Leeway Space | MDS AIPGDEE preparations B-IDS

Maximum part of Leeway Space is provided by which tooth?
A. Primary Canine
B. Primary First Molar
C. Primary Second Molar
D. All contribute equal space

Ans. (C)

In contrast to anterior teeth, the permanent premolars are smaller than the primary teeth they replace, The mandibul r•primary second molar is on the average 2 mm larger than the second premolar, while in maxillary arch, e pr' ary second molar is 1.5 mm larger. The primary first molar is only slightly larger then the first premolar, but contribute to extra 0.5 mm in mandible .