If an adult tooth falls out of the mouth, schedule an appointment with your dentist immediately, ideally within 30 minutes of the tooth being outside the mouth. Saving the tooth depends on getting into the dentist as soon as possible, and until you do, these are the steps you should take in order to ensure that your natural tooth is preserved once it has been outside of the mouth for an hour or more.
Step 1: Touch the tooth only by the chewing, normally visible surface and NOT the root.
Step 2: If the tooth is dirty, gently rinse with warm water. Do not scrub, use toothpaste or soap, dry the tooth, or wrap in tissue/cloth.
Step 3: Reposition the tooth in the socket if you can.
Step 4: If you cannot reposition the tooth in the socket, keep the tooth in milk or tuck it in your mouth next to your cheek. KEEP THE TOOTH MOIST AT ALL TIMES.