Do you mean you want to be a
dental assistant? It would depend on what kind of education/experience you have. From what I've been able to find dental assistants in the US earn anywhere from $24,000 - $34,000/year.
Below is an example of a current ad for a dental assistant in Providence, RI.
dentplus dental
66 kennedy plaza
Providence, Rhode Island 02903
Providence
Website: DentPlus Dental Center
Post on site: From 4/22/2008 until 7/6/2008
Categories: Dental
Job Type: Regular
Full/Part Time: Full Time
Salary: Annual Salary
$24,000.00 to $28,000.00