In addition to practices authorized in Section 1925, a registered dental hygienist in alternative practice may perform the duties authorized pursuant to subdivision (a) of Section 1907, subdivision (a) of Section 1908, and subdivisions (a) and (b) of Section 1910 in the following settings:
(a) Residences of the homebound.
(b) Schools.
(c) Residential facilities and other institutions and medical settings that a residential facility patient has been transferred to for outpatient services.
(d) Dental health professional shortage areas, as certified by the Department of Health Care Access and Information in accordance with existing office guidelines.
(e) Dental offices.