This fine example of Federal Period architecture (1785) was rescued from demolition through the joint efforts of Historic Delaware County, Inc. and Nether Providence Township. It is now maintained by the Friends of the Leiper House, Inc. and the Township.
But youâre probably wondering, how long does it take to become a dental assistant thatâs certified? Becoming certified takes a relatively short amount of time, and usually takes no more than 6 months to a year after completing an accredited dental assisting program.
The Certified Dental Assistant exam is approximately 4 hours long and consists of 320 test questions. On a scale of 100 to 900 available points, test-takers must pass with a score of 400 or better, which they earn by completing 3 test sections:1  General chair-side test: 120 questions.f you're in a dental assisting role, whether as a hygienist, assistant, or technician, your duties might vary by practice, or even by state.