Final answer:
Dental laboratories must renew their licenses at intervals set by local regulations, submitting proof of compliance with industry standards and other evidence as required.
Step-by-step explanation:
The specific frequency at which dental laboratories must renew their license to operate can vary depending on the jurisdiction and local regulations. Dental laboratories are often required to adhere to state or other regulatory bodies' rules, and it is important that they review these specific requirements regularly to ensure compliance. When applying to renew their registration, dental laboratories typically need to submit proof of ongoing compliance with industry standards, evidence of any continuing education by technicians if applicable, and sometimes proof of adherence to safety and hygiene protocols.