The second premolars extraction is often forgotten by the orthodontics in order to resolve the arch discrepancy. The second
premolars extraction has clinical and therapeutic considerations that make this extraction different than those of firts premolars.
The aim of this article is to evaluate the involved factors in the second premolars extraction and to make some consideractions
in relation to this kind of extraction.
(Rev Esp Ortod. 2006;36(4):237-248)