This depends on the person, but typically when someone suffers from sinus congestion and a sinus infection, the resulting inflammation results in pain that spreads to other parts of the body. This can manifest itself as pain in the shoulders, neck, hips and/or teeth. If you experience this type of pain when bending over, it's likely due to your sinuses and allergies. Treat your allergies and congestion problems with over-the-counter medication or through natural treatments such as steam inhalation or nasal aspirins. Once your condition is under control, your dental pain should disappear as well.