Objective To explore the effect of oral implant restoration technology on occlusal function and oral symptoms in patients with dentition defect. Methods A total of 63 patients with dentition defect admitted to Suzhou Stomatological Hospital from September 2023 to December 2024 were selected, and they were divided into the control group (n =31) and the study group (n =32) by the random number table method. The control group was treated with conventional oral restoration technology, and the study group was treated with oral implant restoration technology. The occlusal function, oral symptoms and quality of life were compared between the two groups. Results After treatment, the maximum occlusal contact area and maximum occlusal force of the two groups were better than those before treatment, and those of the study group were better than those of the control group (P <0.05). After treatment, the scores of tooth loosening, gingival pain and gingival swelling of the two groups were lower than those before treatment, and those of the study group were lower than those of the control group (P <0.05). After treatment, the scores of functional limitation, physical pain, psychological discomfort, social dysfunction and psychological disorder of the two groups were lower than those before treatment, and those of the study group were lower than those of the control group (P <0.05). Conclusion The application of oral implant restoration technology in patients with dentition defect has a definite effect. It can effectively improve occlusal function and oral symptoms after treatment, which is conducive to reducing the impact of oral diseases on the quality of life of patients.