My boy Rudy lost his teeth when the new ones came in however My girl Gizmo lost all of hers except for the top two canine/fangs.  She finally lost them at 18 months.  I wasn't too concerned because they didnot interfere with her bite and the new teeth were coming in perfectly straight.  She did not have bad breath with it either.  I hope this helps.  If they are not coming in out of line or causing problems, I would agree with the wait and see advise.     
				__________________   Dakota, Gizmo and Rudy's MA:       |