Modification of pendulum appliance / 实用口腔医学杂志

Among several intraoral distalizing devices,the pendulum appliance is one of the most commonly used noncompliance appli-ances.It is widely used to correct Class Ⅱ molar relationship.More healthy teeth can be preserved with the using of pendulum appliance in the tooth extraction of borderline cases.The pendulum appliance was modified and used in clinic.Long-term observasion showed that the modified pendulum appliace is effective in orthodontic treatment.