The Research of Dentition Defect Expert System Based on the AND/OR Tree with Positive and Negative Constraints

The purpose of this research is to solve multiple combination and inefficient of complex dentition defect diagnosis and treatment, we put forward the thought of building data structure of AND/OR tree and set the problem node as "AND tree" and the treatments rules as "OR tree", through introducing the positive and negative constraints to prioritization the complex rules of oral treatment and generating a diagnostic report with treatments order for medical staff make a diagnosis quickly and efficient. Results show that it is feasible to use AND/OR tree with the positive and negative constraints for reasoning data of dentition defect. Ensuring the accuracy of diagnosis in practical application and improving the efficiency of the diagnosis.