R.I. Gen. Laws § 5-31.1-38: Advertising.

(a) All advertising by any facility rendering dental-care services to the public shall contain the name of the dentist or dentists who either directs or owns the facility.

(b) Any person or corporation who or that operates a dental referral service that is engaged in the business of offering to refer patients to dentists must disclose in all advertising that dentists pay a fee to the referral service to participate in the service.