Temporomandibular Disorders (TMDs) are a group of conditions affecting the temporomandibular joint and related structures, frequently encountered in dental and medical practice. With the increasing use of large language models (LLMs) for health-related queries, this study aimed to evaluate the quality of responses provided by four leading AI platforms Google Gemini, Microsoft Copilot, ChatGPT, and Meta AI to the most commonly asked questions about TMDs. A set of 45 standardized questions covering definitions, symptoms, causes, diagnosis, and management of TMDs was used. Responses from each platform were assessed on a Likert scale (1–20) across four key domains: Understandability, Readability, Credibility, and Contextual Relevance. While all four AI models demonstrated potential as educational tools for patients seeking information about TMDs, their quality and consistency varied. Based on this Likert-scale assessment, the overall ranking was: Google Gemini (1st) > Microsoft Copilot (2nd) > ChatGPT (3rd) > Meta AI (4th).