Abstract: Objective To analyze the risk factors of appliance in orthodontics, in order to provide a reference for clinical safe handling. Methods By understanding the mechanism of action and clinical classification of appliance, analyze the common risk factors during clinical handling, and then put forward the suggestions. Results Although appliance has risks during clinical handling, they are able to be controlled. Conclusion By patients and physicians making great efforts together, appliance will play further important therapeutical effect in orthodontics.

Key words: appliance, orthodontics, risk, suggestion