Teeth hurt during a cold primarily because of sinus congestion and pressure. When you have a cold, the sinuses near your upper back teeth often fill with mucus and become inflamed, causing pressure on the roots of these teeth and resulting in pain or soreness. Additionally, colds can increase mucus and saliva production, which can make teeth more sensitive to temperature changes, such as cold air or drinks. Breathing through your mouth due to nasal blockage can also dry out your mouth, leading to further tooth sensitivity. Other contributing factors include:
- Temperature sensitivity due to exposed dentin when enamel wears down.
- Receding gums exposing sensitive tooth roots.
- Teeth grinding (bruxism) triggered by illness stress.
- Weakened immune response potentially affecting oral health.
- Cracks in teeth from cold exposure.
If the pain persists or is severe, a dental check-up is advisable to rule out cavities or other dental issues aggravated by the cold or illness.
