Only 30% of Kids wear Mouth guards when playing sports. Save a tooth preserving kit is like the air bag in your car. When all other safety measures fail, Save-A-Tooth is there to prevent permanent tooth loss from an accident. In the event that a tooth is knocked out, place tooth root down into the preserving solution within 15-30 minutes. Save-A-Tooth tooth saver will preserve your tooth for up to 24 hours. Your Save a tooth kit is good for up to 2 years.