For purposes of subsection (a) of § 19a-88, the Commissioner of Public Health shall adopt regulations, in accordance with the provisions of chapter 54, not later than January 1, 2008. Such regulations shall include, but not be limited to, (1) a definition of “retired from the profession” as that term applies to dentists, (2) procedures for the return to active employment of such dentists who have retired from the profession, and (3) appropriate restrictions upon the scope of practice for such dentists who are retired from the profession, including restricting the license of such dentists to the provision of volunteer services without monetary compensation.