Leaving the tooth untreated or infected is likely to become increasingly painful as it comes into contact with hot and cold foods; chewing can also make this pain worse. Sometimes the pain can become continuous and may be accompanied by swelling. The longer the infection is left within your tooth, the lower the success rate of subsequent treatment becomes.
Removing the tooth (extraction):
If the tooth is removed, your body is easily able to remove any residual infection. You may then choose to leave the gap, or replace the tooth with an implant, bridge, or denture. Unfortunately, bridges can damage your other teeth and dentures often feel bulky. Missing a back tooth can affect your ability to chew and can put increased pressure on your remaining teeth, which could cause these to break or crack. Missing a front tooth could have a massive effect on your self confidence.