Answer :
Final answer:
Dental hygienists and licensed dental assistants are not allowed to take impressions and bite registrations for fabrication of prostheses, but they can assist with cleaning and fitting them.
Explanation:
Dental hygienists and licensed dental assistants are not permitted to take impressions and bite registrations for fabrication of fixed and removable prostheses. This process involves the creation of prosthetic teeth or restorations based on a model or impression. However, they can assist in cleaning prostheses and perform other tasks such as fitting them to the patient's mouth.
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