Comparing the Performance of Different Artificial Intelligence Tools in Evaluating Dental Morphology Model Assignments.

OBJECTIVES: This study aimed to compare scores obtained for evaluating maxillary left canine tooth models prepared from soap in a dental morphology course using different artificial intelligence (AI) models and dental educators with the same rubric, and to evaluate the feedback generated by the AI models. METHODS: Assignment models prepared by students were scored by ChatGPT 5.2, Gemini 3 Pro, and Grok 4.1 AI tools, and by dental educators using the same evaluation criteria. The quality of feedback generated by AI models was evaluated by experts using the Global Quality Scale (GQS). Data were analysed using SPSS v27.0, and normality was assessed using the Shapiro-Wilk test. Statistical differences between the three AI tools and expert scores were examined using the Friedman Test and Bonferroni-corrected multiple comparisons, and agreement among evaluators was assessed using Kendall's W coefficient. RESULTS: A significant difference was found between the AI models and expert ratings (p < 0.001), with all AI models receiving higher scores than the experts. Significant differences were also found among the AI models' GQS scores (p < 0.001); Gemini 3 Pro produced the highest feedback quality, while ChatGPT 5.2 produced the lowest. CONCLUSION: AI models can be used as supportive tools in the assessment and feedback processes in dental education; however, in terms of contextual awareness and personalised feedback, they are not yet at a level to replace expert evaluations.