The shape of teeth has an important influence on a person's oral health and facial beauty, and the implementation of orthodontic surgery is inseparable from the wearing of dental appliances. Then please see the introduction of Xingyuan dental experts below. Fixed appliances include: braces-braces are the most commonly used fixed appliances. The bracket consists of a belt, a steel wire and/or a bracket. As a fixed part of the appliance, the band is fixed around the teeth, and the bracket is usually stuck in front of the teeth. The arc-shaped steel wire passes through the bracket and is fixed on the belt ring. Tightening the bent steel wire can exert tension on the teeth, so that the teeth gradually move to the correct position. Generally speaking, adjusting braces once a month can get the expected effect, which can be achieved in several months to several years. The braces used now are smaller and lighter than those used in the past, and you won't see many metal parts after wearing them. Nowadays, children's braces are more colorful, with many bright and simple styles that adults like. Special fixed appliance-Special fixed appliance is used to suppress the thrust of sucking thumb or tongue. These appliances are fixed to the teeth with straps. Because this kind of appliance will cause great discomfort to eating, it can only be used as a last resort. Fixed gap retainer If the baby's teeth are missing prematurely, the gap retainer can keep the gap until the permanent teeth erupt. The band ring is fixed on the tooth next to the notch, and the steel wire is stretched to the tooth on the other side of the notch. Movable appliances include: braces-for adults, braces are another option for traditional braces. More and more orthodontists began to use various appliances to move their teeth. The calibrator works in the same way as the fixed appliance, but it has no wires and brackets. The calibrator is basically invisible. When eating, brushing and flossing can all be removed. Movable gap retainer is an instrument, and its function is the same as that of fixed gap retainer. It consists of a plastic or steel bifurcation between an acrylic base fixed to the mandible and specific teeth, thus maintaining the gap between these teeth. Mandibular positioning appliance mandibular positioning appliance is also called splint. This appliance can be worn on the top or bottom of the mandible, which is helpful to train the mandible and make it close to a more suitable position. The appliance can be used to correct temporomandibular joint diseases (TMJ). ? 0? 2? 0? 2