Sleep apnea is a serious sleep disorder causing repeated breathing pauses, leading to oxygen imbalance. It can result in loud snoring, choking, and daytime fatigue. The two main types are central sleep apnea (brain signal failure) and obstructive sleep apnea (airway blockage), with the latter being more common and treatable by a dentist. Symptoms include morning headaches, insomnia, and excessive daytime sleepiness. Fortunately, dentists offer effective treatment options to manage sleep apnea and improve sleep quality.