Fixed Expansion


RPE Banded

This adaptation of the RPE is a good alternative when rapid palatal expansion is desired but the patient is in mixed dentition or banding of the first bicuspids might be a problem. Due to the rigid nature of these appliances, the 2 banded version is also a good choice in cases with a difficult path of insertion. The anterior arms of the expansion screw are soldered directly to the palatal wires thus eliminating the need for bicuspid bands.

RPE Bonded

An alternative to the banded design this fixed expander uses posterior acrylic coverage which is bonded directly to the teeth. The posterior bite blocks free up the occlusion removing cuspal interferences. Head gear tubes, arch wire tubes, and reverse pull hooks can all be added as desired. The Bonded RPE is available with the traditional RPE screws as well as the Super Screwtm, and the Compact RPE.

Haas Expander

A fixed maxillary expander that uses acrylic pads and heavy lingual wires to apply pressure to both the teeth and the palatal tissue during expansion. The lingual wires are soldered to bands on the first bicuspids and the first molars and extend into the palate where they are embedded in the acrylic pads.

Quad Helix

• This fixed metal expander (also available as a fixed/removable) is capable of applying forces in numerous directions depending upon how it is activated. The four helical loops (two in the first bicuspid region and two in the second molar region) can be activated in unison or individually to achieve the desired results. The appliance is soldered to bands on the first molars and lingual arms run from the bands forward to the cuspids or first bicuspids as desired.

Fixed Mandibular Expander

Used as an alternative to the removable Schwarz appliance, this fixed metal expander provides lateral expansion in the mandibular arch. It is a good option when patient cooperation might be an issue. A miniaturized version of an RPE screw is placed lingual to the anteriors. Heavy arms extend back from the screw and are soldered to bands on the first molars. Lingual arms of .036 are also soldered to the molar bands and extend forward contacting the lingual of the bicuspids or D's and E's.