Serving your Orthodontic needs since 1990.

EX110 – Mini RPE

Appliance Purpose / Function:
The Mini expander is an all metal expansion appliance typically providing sutural separation. This expander preserves more tongue space than standard size screws, reduces tissue impingement allows easier access for hygiene, and provides greater comfort for the patient.

Appliance Components:

  • Bands on the 1st permanent molars
  • expansion screw
  • Swivel key for activation

Suggested Materials:

  • Wire: Chromium Cobalt wire Solder:
  • Silver Solder (Cadmium Free)


  • Laser welding (no solder)
  • Occlusal rests
  • Face mask hooks
  • Habit crib
  • Arch wire Tubes
  • Headgear Tubes
  • May be fabricated with 4 bands

Appliance Fabrication Standards:

  • Lingual bars extend to the mesial of the cuspids unless requested otherwise
  • The body of the RPE is as high in the palatal vault as possible without touching the tissue
  • The RPE is aligned with the midline
  • The body of the RPE should be no further distal than the middle of the first permanent molars

All information is from