The Costco Gas Station hours are usually longer than the Costco Warehouse opening hours, so make sure that you are viewing the Costco Gas Station hours, and not the Store Hours, if you search through an app or with google maps.
All dental hygienists in the United States must be licensed by the state in which they practice, after completing a minimum of two years of school and passing a written board as well as a clinical board exam. State requirements vary by state, and are controlled by state dental boards.
In what states are dental assistants allowed to polish? This question requires two answers. In some states, dental assistants can perform coronal polishing as an expanded function. In Arkansas, California, Minnesota, and Michigan, the procedure can be performed by a registered dental assistant (RDA). Dental assistants in Idaho, Nebraska, New Mexico, Oklahoma, and Tennessee obtain a certificate after training is completed.