Oral implantology is a discipline that combines theory and practice, and its research involves many fields such as ecology, psychology, and genetics. In view of the clinical application of this subject, this article will discuss the practice of combined PBL (problem-based learning) teaching method, introduce the background and significance of this topic in detail, and analyze the current status and development trends of related research at home and abroad. Next, this article combines PBL teaching method to design a model for oral implantology teaching at the postgraduate level, and discovers problems through experimental results and actual situations. The experimental results showed that the average score of the experimental class was 89.3 points, while the average score of the control class was 74.3 points; the participation rate of the experimental class ranged from 93% to 96%, while the participation rate of students in the control group ranged from 82% to 88%. The overall performance of students in the experimental group who have been trained by PBL teaching method is better than that of students who have not been trained, which shows that this method is feasible and can improve the effect of oral implantology teaching.