BEST DENTAL CLINIC IN ANNA NAGAR! Sleep is a vital part of good health. It gives us a chance to rest, repair and recover our energy for another day. It bolsters our immune system and helps promote better health—even better oral health. Getting enough sleep improves blood flow, allowing the body to more efficiently transport nutrients that make the mouth healthier. Breathing through the mouth due to sleep apnea can contribute to gum disease.  Poor sleep quality can contribute to temporomandibular joint disorder (TMD), which can cause jaw pain, jaw mobility issues,   and headaches.