Distal Molar Movement with Pendulum Appliance
Dentists are constantly faced with the challenge of regaining space after the permanent maxillary first molars have mesialized due to premature extraction or exfoliation of the deciduous second molars. With this event, a Class II molar relationship may result.
When gaining space or distal movement of the permanent maxillary first molars is needed, one of the many appliances that can be used is the pendulum appliance.
It consists of an acrylic Nance button for anchorage. Wires are extended from the acrylic and bonded to the first and second premolars or first and second deciduous molars for stability. Helical springs made of 0.032 TMA wire extends from the distal aspect of the acrylic and are inserted to the lingual sheath of the bands on the permanent maxillary first molars. When activated, it delivers a force of 200-250 grams per side and produce a swinging arc motion, hence the name “Pendulum“.
Distal Molar Movement with Pendulum Appliance – http://www.costbraces.org/distal-molar-movement/
by Dr. Erlene Joy C. Go