At our hunting camp recently, it was "debated" whether sows have tucks (exaggerated canines) like boars. I have not seen enough dead, older sows to really know. (By the way, EVERYTHING from rifle calibers to chainsaw techniques to grilling to game cleaning is "debated" at the camp.)
I found this cool Australian scientific paper which discusses aging boars and sows with the following pictures.
So now we know.
A link to the PDF of the article is found below.
A Man in the Woods