Reverse-pull Headgear / Face Mask (rod type)

Descrição do produto

The reverse-pull headgear (face mask) is used by orthodontists as an auxiliary device when correcting the human dentition, and is available in adjustable and rod types. It consists of a chin cup, a forehead pad and metal connectors, with a product size of 225 x 88 mm. Metal parts are made of austenitic stainless steel 12Cr18Ni9 and plastic parts of ABS; the traction hook must withstand a pull of no less than 10 N with the screw tightened. Traction force is generally 500-1000 g and can be adjusted to the patient age and tolerance; shelf life and warranty are both 36 months.