Dental emergencies happen. If a permanent tooth is knocked out, don't delay. Call us immediately for an emergency visit. Re-implanting a tooth works best when done within 30 minutes. After two hours, the procedure is unlikely to be successful. Call us after any blow to the mouth. A chipped tooth can be repaired, and any blow hard enough to chip a tooth is hard enough to move teeth out of alignment, even break the jawbone. Other dental emergencies include pain, swelling, or a lost filling. If you think it's an emergency, so do we.