Does smoking make the teeth loose?
Yes. Smokers are six times more likely to have serious gum (periodontal) disease. Periodontal disease is a deep-seated form of gum disease. It involves not just the pink gum, but also the supporting bone and the membrane that holds the teeth in place. When gum disease damages these supports, the teeth become less stable and move too easily. Eventually they can become painful and loose, and need to be extracted.
Smoking affects the immune system and lowers its ability to reduce harmful bacteria that can cause gum disease.