Don’t miss this exclusive handout offer by Head and Neck Rehab!
This quick-reference guide walks you step-by-step through how to measure mouth opening accurately in patients with or without dentition. Based on current dental and rehabilitation literature, it explains practical methods, landmarks to use when teeth are missing, and common measurement mistakes to avoid.
Whether you’re a clinician new to MIO assessment or simply want a reliable refresher, this guide helps you:
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understand what MIO is and why it matters
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measure mouth opening when patients have no teeth
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choose appropriate tools and reference points
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interpret measurements confidently for documentation and treatment planning