A dental chair is a specialized, adjustable medical seat that supports patients during dental procedures, featuring ergonomic designs, integrated equipment (lights, suction, instruments), and controls for positioning (height, tilt, headrest) to provide comfort and optimal access for dentists. Its uses include examinations, cleanings, fillings, extractions, and oral surgery, serving as the central hub for treatment by allowing precise patient positioning for efficient, ergonomic work for the dental team.