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4. Asymmetrical (crooked) smile

The facial nerve controls the buccinator muscle, located within the cheeks. Its job is to make the cheek area flat and pull the angle of the mouth back. This is important to keep the food in the right position during chewing. It also helps with smiling and whistling and helps newborn babies to suckle. When the facial nerve is affected, this muscle becomes weak which makes the person unable to smile properly.

smile bell's palsy

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This site offers information designed for educational purposes only. You should not rely on any information on this site as a substitute for professional medical advice, diagnosis, treatment, or as a substitute for, professional counseling care, advice, diagnosis, or treatment. If you have any concerns or questions about your health, you should always consult with a physician or other healthcare professional.