Armrest for dental chair with mouse touch device for patient use comprising an armrest (1) fixed to the dental chair, featuring a mouse touch-type input peripheral (2) on its edge connected via USB or radio frequency wireless connection to a CPU, central processing unit (3), which manages programs and sends information to an LCD, liquid crystal display (4), placed within sight of the patient, regardless of the height and tilting movements of the dental chair, enabling patient interaction with various interface programs, such as Internet access, games, watching videos, choose music media or social media, among others, simply using the fingertips.