A person 18 years old or over who has successfully completed 2 years' training in a school of dental hygiene approved by the board, or who is a full-time dental student who has satisfactorily completed at least half of the prescribed course of study in an accredited dental college, but who has not graduated from a dental college, is eligible to apply for examination. [1993, c. 600, Pt. A, §80 (AMD).]