first get your baby tooth removed.
get an x-ray to know the position of impacted permanent canine.
since it is close to maxillary sinus
region,there is more chance of sinus injury
while extracing tooth.
vist an oral and maxillofacial surgeon to get prompt treatment.
if there is chance of normal eruption of teeth as per the x-ray,retain it.
avoid application of pressure in this area.