The armrest of a dental chair is usually used to provide support and comfort to the patient. It is generally located on both sides of the chair and can be adjusted as needed. The height and Angle of the handrail can be adjusted according to the height and comfort of the patient to ensure that the patient can maintain good posture and comfort when receiving treatment. Handrails are usually made of durable materials, such as plastic or metal, to ensure their stability and durability. The armrests of some dental chairs can also be equipped with additional features such as handles or buttons to control the height and tilt Angle of the chair. Overall, the armrests of dental chairs are an important part of providing patient support and comfort.