Dr. Katie To explains periodontitis as a silent bacterial infection beneath the gum line that erodes bone without pain. Pocket depths of 4 mm, 5 mm, or 6 mm indicate bacterial load and tooth loss risk. Gum disease links to heart disease and diabetes, and it's a medical condition, not a hygiene failure.
Gum disease isn't a hygiene problem. It's a slow infection that's been living in your jaw, mostly without pain, for years. The gums and bone around your teeth are supposed to hold them firmly in place for life. When bacteria get below the gum line and stay there, they trigger inflammation that quietly eats away at bone. And because it rarely hurts, most people don't know it's happening until significant damage is done. For example, you go to a new dentist. They take measurements around every tooth and call out numbers to the hygienist. You hear 4s and 5s and a 6. You don't know what that means, but the hygienist looks serious. After the appointment, they tell you that you have moderate gum disease and you need a deep cleaning. You leave feeling embarrassed, like you should have brushed better. But gum disease has genetic components, systemic links, and risk factors that go way beyond the toothbrush. That's not a personal failure. That's a condition that needed earlier detection and a real explanation. Those numbers your hygienist calls out measure the depth of the pocket between your gums and your tooth. Deeper means more bacteria can hide there. Gum disease is the leading cause of tooth loss in adults. It's also linked to heart disease, diabetes, and systemic inflammation. Early treatment is almost always simpler, less invasive, and more effective than waiting. If nobody has ever explained what those numbers at your cleaning actually mean, you deserve a real conversation about your gum health.
