01/20/2026
Do your teeth suddenly feel more sensitive in the winter? Cold weather brings real changes that affect your mouth, your teeth, and even how you breathe.
Cold temperatures can cause your teeth to expand and contract slightly. Over time, this movement can irritate the inner layers of the tooth, especially if the enamel is already thin or if the gums have begun to recede. That’s one reason cold air and cold drinks may feel sharper this time of year.
Lower humidity also plays a role. Winter air is dry, and indoor heating systems remove even more moisture from the environment. This can reduce saliva flow, leading to a drier mouth. Since saliva protects enamel and neutralizes acids, less saliva often leads to greater sensitivity, irritation, and a higher risk of decay.
Breathing patterns change in winter, too. Many people breathe through their mouths more often because of congestion or cold air. Mouth breathing dries oral tissues and exposes teeth directly to cold air, which can increase discomfort and sensitivity.
Here are a few gentle ways to support your teeth in winter:
→ Drink water consistently, even when you don’t feel thirsty
→ Use a fluoride toothpaste made for sensitive teeth
→ Breathe through your nose when possible and consider a humidifier indoors
→ Keep up with regular cleanings so early changes don’t go unnoticed
At Dr. Fred Blum & Associates, we help patients manage seasonal sensitivity and protect their enamel year-round. If winter discomfort is lingering, your smile may be asking for support.
