Hyrax

Also know as RPE (Rapid Palatal Expander) is one of the best orthopedic appliances available in orthodontics. It works by widening the bone in the upper arch. At an early age we can separate the mid-palatal suture in the upper arch allowing the palate to widen and create more room for the adult teeth or widen the smile to better fit with the lower teeth. Is typically used in phase I treatment to widen the arch, either prior or during fixed treatment. Our standard expander uses the 11mm Leone expander and has welded lingual wires expanding to the premolars or cuspids. It is constructed entirely of biomedical stainless steel, and the housing is completely smooth with no rough areas to aid in hygiene. With each expansion appliance, we provide a custom swivel key that has an integrated activation recording tool directly on the handle.

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Category: Expansion Tag: Upper

Description

Treatment & Care

Our expanders come in 7 or 11mm screws and vary in activation depending on the style. The typical rate of activation is one (1) per day. Each RPE requires four (4) activations per 1mm. It is Not uncommon to double up with one turn in the morning and one in the evening. Going too fast may damage periodontal membrane or roots of the teeth. Going too slow may result in producing more dentoalveolar change and less sutural split than normally desired. 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.

Materials
  • Wire: American Orthodontics Chromium Cobalt
  • Screw: Leone RPE
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

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