Abstract: With the development of science and technology, the dental orthodontic software system can automatically generate several orthodontic schemes. Aiming at the problem of how to help doctors and patients choose the most satisfactory scheme, a comprehensive evaluation and selection method for the invisible orthodontic scheme based on the analytic hierarchy process was proposed. In light of the orthodontic standards commonly used by orthodontists and the basic demands of patients, this paper proposed a hierarchical model for selecting the best invisible orthodontic scheme. The model took into account such three dimensions as occlusion, aesthetics, and orthodontic costs, and encompassed eleven orthodontic indicators, such as occlusion contact, crowding degree of dentition, dental arch symmetry, tooth movement difficulty, orthodontic cycle, and cost. The analytic hierarchy process was utilized to construct a paired comparison matrix, pass the consistency test, determine the weight of each index and each program, calculate the comprehensive weight, and conduct the sorting, thusobtaining the optimal program. Based on case studies, the paper conducted experiments on different cases, and resorted to the expert scoring method for experimental comparison. The results show that the comprehensive evaluation based on the analytic hierarchy process can provide an effective reference for doctors and patients to choose an appropriate invisible orthodontic scheme. 

Key words: orthodontic, analytic hierarchy process, pairwise comparison matrix, weight, optimal selection of scheme