Objective: To analyze the effect of fine oral care on maxillary sinus lifting dental implantation under the integrated mode of medical care. Methods: A total of 30 patients with maxillary sinus external lift dental implantation in our hospital from January 2024 to July 2024 were selected and randomly divided into control group and observation group, with 15 cases in each group. The control group received traditional postoperative care for oral implantation, and the observation group received refined oral care under the mode of medical integration. Postoperative oral function, masticatory function and daily activity ability were compared between the two groups. Results: The three dimensions of speech function, swallowing function and smile display in the observation group were better than those in the control group (P < 0.05); the scores of personal care, diet intake and indoor activity in the observation group were higher than those in the control group (P < 0.05); the scores of hard food, soft food and sticky food in the observation group were higher than those in the control group (P < 0.05). Conclusion: Under the integrated mode of medical care, oral fine nursing has a significant impact on the maxillary sinus external enhanced dental implantation, and significantly improves the quality of life and oral health of patients.