A Cutting Edge Design

Revolutionary Design for a Hassle-Free Experience

The Keles Keyless Expander (KKE) is a rapid palatal expander that features a built-in activation arm. It stands out from other palatal expanders by eliminating the need for a separate key, by its small size, and ease of use. This design offers numerous benefits, such as decreasing treatment duration and enhancing effective patient-friendly treatment by increasing compliance & comfort.

Quick Facts

  • No Key!

  • Patient Friendly

  • Small Size

  • Fast Treatment Duration

  • High Treatment Adherence

  • Intermittent Force

  • 0.2mm per activation

  • Intentionally reversible

Live At AAO 2025!

Live At AAO 2025!

Learn more about the Keles Keyless Expander at AAO!

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Published on JCO March Issue!

Published on JCO March Issue!

Brought to you by the inventor of the Keles Slider & Keles Face Mask

Successfully treated over 1,000+ patients

THE BENEFITS

NO KEY!

The unique built-in arm eliminates a separate key, ensuring a straightforward activation process.

HASSLE-FREE

No more frustration over finding the tiny activation hole, making incomplete turns, screw back-spin or misplacing the key.

FAST

Shorter treatment duration due to increased patient compliance.

SMALL

Its small size allows for deep placement, enabling true skeletal expansion and enhanced comfort.

DIFFERENT APPLICATIONS

2-Arm Design

4-Arm Design

Bonded Design

Hybrid Design

HOW DOES THE MECHANISM WORK?

The Keles Keyless Expander (KKE) consists of 9 pieces, its activation mechanism includes an arm (5), a screw (2), a spring (4), and a spring cap. The arm’s base and the screw’s center contain gears. The teeth of the 2 gears interlock since a spring pushes them together (this spring is housed within the spring cap and the arm). When activated with a finger, the arm rotates the screw, moving the two blocks outward, expanding 0.2mm. After the activation, the arm is pushed up, which disengages the teeth of both gears where the arm returns to its resting position and the screw stays stationary.

- The Unidirectional Screw System allows the expander to turn one way, like a unidirectional ratchet/wrench. With this system there is no screw back spiraling/reversing.

- If the doctor wants, the KKE can be reversed with the Reversal Kit

Keyless Design

Features a built-in activation arm that applies intermittent force when activated and expands 0.2mm per turn.

Full Activation: 1 Turn = 115° = 0.2mm

The upper restrictor sets the arm’s resting position, and activation completes when the lower restrictor meets the pin.

Upper Restrictor

Lower Restrictor

Maximum Expansion Locking System

THE UNIQUE DESIGN

When fully expanded, the stopper leans against the block's level change, preventing disassembly—a unique safety feature.

The “Stopper”

Block Level Change

SIZES

STEPS TO ACTIVATE

1

PUSH THE ARM STRAIGHT DOWN

2

PULL THE ARM STRAIGHT UP

Can be performed either by the patient or by a guardian/parent.

This is a passive movement that brings the arm to its initial position for the next turn.

INTENTIONALLY REVERSIBLE

The Keles Keyless Expander can be reversed both Intraorally & Extra orally using the Reversal Kit! Watch the animations to see how.

Intentional Intra-Oral Reversal

Intentional Extra-Oral Reversal

THE ARM CAN BE CUT DURING THE RETENTION PERIOD

After the activation phase of the treatment is over and the retention phase of the treatment starts the doctor can cut the activation arm to preventing overactivation