While you should be visiting your dentist every six months or so, there may be a time when you need to have an emergency dental visit. First, if you notice any loose teeth, or even a filling or crown, becoming loose, you should be sure to make an appointment to fix it. Aside from loose teeth, if you’re experiencing extreme tooth pain, you should be sure to get it checked out. This can be a sign of a cracked tooth, damaged gums, or even tooth decay.