Teeth are extracted for a variety of reasons:
Decay has reached deep into the tooth
Infection has destroyed a large portion of the tooth or surrounding bone
There is not enough room for all the teeth in your mouth
Many dentists recommend extracting impacted teeth that are only partially erupted. Bacteria can enter around a partially erupted tooth and cause an infection, which can extend into the surrounding bone and become extremely serious. Impacted teeth continue trying to break through the gum tissue even if there is not enough room to accommodate them. The continued pressure caused by this attempted eruption can eventually damage the roots of nearby teeth. Removing a tooth that is impacted can often prevent infection, damage to adjacent teeth and bone, and save pain in the years to come.