Hilgers Pendulum Appliance

The Pendulum Appliance is used to distalize the molars for the correction of Class II.

Effective arch development is achieved with rests on the premolars and a .032 TMA wire embedded in acrylic. It produces a wide swinging arc of force from the midline of the palate to the upper molars producing a pendulum motion of the spring. An adjustment loop can be added to the spring to aid in rotation of the molars. Lingual sheaths are spot welded onto the band and can be provided by the lab.

Category: Distalization Tag: Upper


Treatment & Care

Pre-activation of the springs should be done before insertion. Bend the spring 90 degrees, so they are parallel to the midline of the palate. Be aware that 1/3 of compression is lost during placement. Insert the spring into the lingual sheath using finger pressure and a Weingart plier. Use an elastic O-ring to hold the spring to the band.

The patient should be seen every three weeks, and reactivation should be done if needed. If needed, hold the center of the helix with a bird beak plier and push the spring distally.

This appliance should be cleaned every day with toothpaste and a soft toothbrush, morning and night. Encourage the patient to give enough time to clean thoroughly around the appliance, gums, teeth, and bands to maintain proper hygiene and prevent inflammation. 3 minutes is recommended.

  • Wire: American Orthodontic Chromium Cobalt
  • Springs: .032″ Titanium Molybdenum Alloy Arch wire Round
  • Acrylic: JBC Monomer and Polymer
Attachment & Band options:
  • AO Maximum Retention Bands
  • Leone Web Bands
  • AO .022 Slot w/ Hook
  • AO Headgear and .022 Slot with Hook
  • AO MBT w/hook
  • AO Double Slot w/ Hook