If, however, you are ever concerned about the health of your child's teeth, make an appointment to discuss your worries with his dentist. Most kids lose their first tooth in the years between kindergarten and first grade at the average age of six to seven years old. Don't worry if your child hits his eighth birthday before he loses his first tooth. What's more important is the order in which the teeth fall out and are replaced with permanent teeth.
United States Army Research Laboratory. The Army Research Laboratory (ARL) is the U.S. Army's corporate research laboratory. ARL is headquartered at the Adelphi Laboratory Center (ALC) in Adelphi, Maryland. Its largest single site is at Aberdeen Proving Ground, Maryland.
ARL has consistently provided the enabling technologies in many of the Army's most important weapons systems. Technology and analysis products are moved into RDECOM RDECs and to other Army, Department of Defense (DoD), government, and industry customers. The Army relies on ARL to provide the critical links between the scientific and military communities. The Laboratory must marshal internal and external science and technology assets to fulfill the requirements defined by or requested by the Soldier.