When sourcing dental consumables, the most critical factor is regulatory compliance. You must ensure the supplier holds ISO 13485 certification, which is the specific quality management system for medical devices. For market access, products must have CE Marking (MDR 2017/745) for Europe or FDA 510(k) clearance for the United States. Additionally, verify that sterile products, such as surgical sutures or anesthetic needles, have valid Sterilization Certificates (EO or Gamma) to ensure patient safety.