Abstract: PURPOSE: To provide experience in 9 cases of transoral robotic surgery (TORS), and to explore the future application of robot in oral and maxillofacial surgery. METHODS: Nine cases with tumors in deep oral cavity were resected by using Da Vinci robotic surgery system in the Department of Stomatology, PLA General Hospital. RESULTS: All the patients completed the operation successfully. The shortest time of the operation area exposure was 20 min, the longest time was 90 min, the average time was 42.2 min. The shortest operation time was 5 min and the longest was 90 min, the average time was 40.9 min. Except for 1 case, who underwent bilateral neck dissection, there were 8 patients who were operated only by TORS. The average postoperative time was 3.25 d, and the average hospitalization time was 7.75 d. CONCLUSIONS: Resection of the tumors in deep oral cavity can be completed dependently by Da Vinci robotic surgery system, but there are still some difficulties in the operation of tongue base tumor in special patients, which needs a long exposure time of the operation area.

Key words: Da Vinci's robotic surgery system, Transoral robotic surgery, Minimally invasive surgery, Oral and maxillofacial surgery