Fixed Appliances, Leaf Expanders

Leaf Spring Activated Expander

The Leaf Spring Activated Expander from Leone is an evolution in design from the spring-loaded expander, designed with the technical and scientific collaboration of Dr. Claudio Lanteri and Mr. Filippo Francolini. Its small size body and two Nickel Titanium Memoria® leaf springs allow the release of calibrated and continuous forces to promote the dental expansion of the maxillary arch. Re-loading is needed when the two opposing leaf springs move apart. The intraoral activation will put the springs in contact again. Available in both 6 and 9mm of expansion and 450 grams and 900 grams of force. With each expansion appliance, we provide a custom swivel key that has an integrated activation recording tool directly on the handle.

Additional Options, Materials & Treatment Information

Treatment & Care

The Leaf RPE will be pre-activated upon arrival being held closed by a ligature wire. After insertion, clip the ligature wire to activate the appliance. The deactivated leaf springs will show the past expansion.

Expansion Protocol

6mm Screw
- Appointment 1: Cementation and initial activation by cutting ligature wire
- Appointment 2: (Scheduled 6 weeks after insert) – 10 activation turns
- Appointment 3: (Scheduled 4 weeks after the second appointment) – 10 activation turns
- Appointment 4: (Scheduled 4 weeks after the third appointment) – 10 activation turns
9mm Screw
- Appointment 1: Cementation and initial activation by cutting ligature wire
- Appointment 2: (Scheduled 8 weeks after insert) – 15 activation turns
- Appointment 3: (Scheduled 6 weeks after the second appointment) – 15 activation turns
- Appointment 4: (Scheduled 6 weeks after the third appointment) – 15 activation turns
This appliance should be cleaned every day with toothpaste and a soft toothbrush, morning and night. Encourage the patient to give sufficient time to clean thoroughly around the appliance, gums, teeth, and bands to maintain proper hygiene and prevent inflammation. 3 minutes is recommended.

Materials & Additional Options

Materials
- Wire: American Orthodontics Chromium Cobalt
- Screw: Leone LEAF RPE
  - Expansion options: 6 mm or 9mm
  - Force: 450 or 900 grams
Attachment & Band options:
- AO Maximum Retention Bands
- .022 Slot w/ Hook
- Headgear and .022 Slot with Hook
- MBT w/hook
- Double Slot w/ Hook

Reference

The Leaf expander is featured in the 2018 March edition of the JCO. Click here to view a copy of the article on the JCO website.

More About Leaf Spring Activated Expander

Also Known As:

Leaf RPE, Leaf spring expander

Who Made Me:

The Leaf Spring Activated Expander is a product of Leone Orthodontics of Florence, Italy. It was designed by Dr. Claudio Lanteri and Mr. Filippo Francolini. The Leaf Spring Activated Expander uses two Nickel Titanium leaf springs to expand the maxillary arch. The Spring-Activated Leaf Expander was developed to offer a gentler, more continuous expansion process compared to traditional turn-key expanders. Its innovative design uses leaf springs to apply constant force, reducing the need for regular adjustments. This expander was first introduced in the early 2000s and has gained popularity due to its ability to reduce patient discomfort while still providing effective expansion.

Customized Uniquely for You

We offer a plethora of customization options to ensure your appliance is expertly tailored to your preferences. With our array of automated machinery and highly skilled craftsmen, you can expect a consistent, high-quality product, every time.

The Dental is in the Details

We’re driven by hard-work and a relentless passion for dental excellence. It’s simple. ODL’s highly skilled lab technicians utilize the finest materials available to achieve ideal results for you and your patients. We stand by our craftsmanship and strive to exceed your expectations with every appliance.

Revolutionize the way you serve your patients with the Leaf Spring Activated Expander

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