Objective To explore the application of bone splitting technique combined with bone condensing technique in oral implant bone augmentation and its effect on implant stability and safety. Methods A total of 60 patients who underwent oral implant bone augmentation treatment at Yidu Fenlubei Yake Dental Clinic from June 2022 to November 2023 were selected as the research subjects. According to the random number table method, they were divided into the control group and the observation group, with 30 patients in each group. The control group received guided bone regeneration technique treatment, and the observation group received the combined treatment of bone splitting technique and bone condensing technique on the basis of the control group. The implant survival rate, wound healing time, alveolar bone quality, periodontal indexes and complications were compared between the two groups. Results There was no significant difference in the implant survival rate between the two groups (P >0.05). The wound healing time in the observation group was shorter than that in the control group (P <0.05). The width, height and density of the alveolar bone at 3 and 6 months after implantation in the observation group were higher than those in the control group. The scores of SBI, GI and PLI at 6 months after implantation in the observation group were all better than those in the control group (P <0.05). The incidence of complications in the observation group was lower than that in the control group (P <0.05). Conclusion The application of the bone splitting technique combined with bone condensing technique in the treatment of oral implant bone augmentation can improve the clinical efficacy, implant stability and safety, enhance the alveolar bone quality, and improve the periodontal condition of patients.