(c) Except as otherwise provided in Section 1632.5, the board shall require each applicant to have taken and received a passing score on one of the following:

1. (1) A clinical and written examination administered by the Western Regional Examining Board within five years prior to the date of their application for a license under this section.
2. (2) The clinical and written examination developed by the American Board of Dental Examiners, Inc., within five years prior to the date of their application for a license under this section.

(d) Notwithstanding subdivision (b) of Section 1628, the board is authorized to do either of the following:

1. (1) Approve an application for examination from, and to examine an applicant who is enrolled in, but has not yet graduated from, a reputable dental school approved by the board.

2. (2) Accept the results of an examination described in subdivision (c) submitted by an applicant who was enrolled in, but had not graduated from, a reputable dental school approved by the board at the time the examination was administered.

   In either case, the board shall require the dean of that school or the dean’s delegate to furnish satisfactory proof that the applicant will graduate within one year of the date the examination was administered.