Feeling discomfort when eating hot or cold foods? Tooth sensitivity can be more than just a minor annoyance—it could signal a deeper issue. David Okano, MD, breaks down what different types of tooth sensitivity—whether triggered by cold, heat, or sweet foods—could indicate and how early intervention can help prevent long-term damage. He also shares insights on when to seek dental care, what treatments may be required, and how you can protect your smile for years to come.