Fixed Appliances, Leaf Expanders

Leaf Spring Self 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. The metal framework is 3D printed for the most predictable and accurate fit. The simple two appointment process starts with a scan at appointment one and then delivery on the following date. No need for separators.

Additional Options, Materials & Treatment Information

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

Materials & Options

Materials

Wire: American Orthodontics Chromium Cobalt
3D Framework: Cobalt-Chromium
Screw: Leone LEAF RPE
- Expansion options: 6 mm or 9mm
- Force: 450 or 900 grams

Attachment & Band options:

Headgear and .022 Slot with Hook
MBT w/hook
Double Slot w/ Hook

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.

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.

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.

Our skilled digital technicians can help you conceptualize a design that provides maximum retention for the appliance. Metal can be designed that runs snug to the lingual with exact fitting rests over the occlusion. Options are available to cup the lingual and the buccal. This revolutionary technology will change the way you serve your patients.

More About Leaf Spring Self Activated Expander

Also Known As:

Leaf expander, Spring-loaded 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 Leaf Spring Expander was designed as a more patient-friendly alternative to traditional expanders. Introduced in the 2000s by Leone Orthodontics, this appliance uses spring-loaded mechanisms to provide continuous, gentle expansion without requiring manual turns by the patient or clinician. It has become a popular choice for improving patient comfort while still achieving effective skeletal expansion.

Treatment & Care

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 Self Activated Expander

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Leaf Spring Self Activated Expander