| http://www.w3.org/ns/prov#value | - Only certain states, for example, allow dental hygienists to receive payment for the services they deliver.15 The matter presents even more of a challenge for centers located in states such as North Carolina and Virginia that do not certify dental hygienists: claims cannot be submitted for services provided solely by a hygienist, making the demand even greater for already scarce dentists.16, 17 Ev
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