Abstract: The Expert Consensus on Intraoral Digital Impression Taking for Fixed Prosthodontics of Tooth and Dental Arch Defects was released in November 2024 and implemented in December, filling the gap of standardized operation guidelines in this field. Digital impression technology, as the foundation of digital oral restoration, collects three-dimensional information of oral soft and hard tissues through intraoral scanners and converts it into digital models through various optical measurement techniques. Compared with traditional impressions, it has advantages such as seamless workflow, stable accuracy, high patient comfort, and convenient data management. The Consensus has established a standardized operation system covering all processes, including instrument preparation and disinfection, optimization of the treatment environment, preoperative oral preparation, and scanning operations, and has clarified key requirements such as equipment calibration, temperature and humidity control, and preparation body design. At the same time, a ‘preoperative-intraoperative-postoperative’ full-process quality control system needs to be established to address multi-dimensional influencing factors such as equipment, operation, patients, and materials. However, the current technology still faces challenges such as scanning blind spots and insufficient equipment standardization, which need to be optimized through technological innovation, operational optimization, multi-technology integration, and industry support. In the future, digital impression technology will develop towards standardization, intelligence, portability, and popularization, expand application scenarios, deepen multi-technology integration, promote high-quality development of oral restoration, and provide patients with better restorative treatment services.

Key words: digital impression, scanning accuracy, stability, comfort, disinfection