Most injuries to primary (baby) teeth occur between the ages of 2 and 3 years, when children are learning to walk and run. Injuries to primary teeth could potentially disturb the development and health of underlying permanent teeth. A baby tooth may change color after being subjected to trauma by a fall, running into furniture, impact with a blunt object or just rough play. Teeth may turn dark but in many cases the color will change back to normal after a few weeks.
The best way to preserve a tooth that has been knocked out is to put it back in its socket as quickly as possible. If immediate reimplantation is not possible, the tooth should be placed in a protective solution (milk or saline). Every tooth has a protective layer surrounding the root called peridontal ligament which is very sensitive and will dry out and die unless the tooth is immediately place in a protective solution.
Immediate attention by a pediatric dentist is essential and should include a health history, radiographic assessment, examination of mandible, maxilla head and neck. ( Next time........ Pediatric Dental Infection)