Any person licensed or legally authorized to practice dentistry or as a dental hygienist in this Commonwealth at the time this act takes effect shall thereafter continue to possess the same rights and privileges with respect to the practice of dentistry or as a dental hygienist without being required to be licensed anew under the provisions of this act, subject, however, to the power of the board, as provided in this act, to suspend or revoke the license of any such person for any of the causes set forth in this act, and subject to the power of the board to require any such person to renew biennially with the board, as provided in this act.
63 P.S. § 127