(1) Diagnosis and treatment planning;

(2) Surgical or cutting procedures on hard or soft tissue;

(3) Fitting and adjusting of correctional and prosthodontic appliances;

(4) Prescription of medicines;

(5) Placement, condensation, carving or removal of permanent restorations, including final cementation procedures;

(6) Irrigation and medication of canals, try-in cones, reaming, filing or filling of root canals;

(7) Taking of impressions for prosthodontic appliances, bridges or any other structures which may be worn in the mouth;

(8) Administration of injectable and/or general anesthesia;

(9) Oral prophylaxis procedures.

(1) Extra-oral duties or functions specified by the supervising dentist;

(2) Operation of dental radiographic equipment for the purpose of oral radiography if the dental assistant has complied with the requirements of section 1656 of the Code.

(3) Examine orthodontic appliances.

(1) Take impressions for diagnostic and opposing models, bleaching trays, temporary crowns and bridges, and sports guards;

(2) Apply non-aerosol and non-caustic topical agents;

(3) Remove post-extraction and periodontal dressings;

(4) Placement of elastic orthodontic separators;

(5) Remove orthodontic separators;

(6) Assist in the administration of nitrous oxide analgesia or sedation; however, a dental assistant shall not start the administration of the gases and shall not adjust the flow of the gases unless instructed to do so by the dentist who shall be present at the patient's chairside at the implementation of these instructions. This regulation shall not be construed to prevent any person from taking appropriate action in the event of a medical emergency.

(7) Hold anterior matrices;

(8) Remove sutures;

(9) Take intra-oral measurements for orthodontic procedures;

(10) Seat adjusted retainers or headgears, including appropriate instructions;

(11) Check for loose bands;

(12) Remove arch wires;

(13) Remove ligature ties;

(14) Apply topical fluoride, after scaling and polishing by the supervising dentist or a registered dental hygienist;

(15) Place and remove rubber dams;

(16) Place, wedge and remove matrices.

(17) Cure restorative or orthodontic materials in operative site with light-curing device.

For the purpose of this section a supervising licensed dentist is defined as a dentist whose patient is receiving the services of a dental assistant in the treatment facility and is under the direct control of said licensed dentist.