Leone
Low stock (10 units)Regular price LE 1,500.00 EGPUnit price /Unavailable
Leone
Leone Micro Sect Screws (1 WAY) (100)
Low stock (10 units)Regular price LE 15,000.00 EGPUnit price /Unavailable
Leone
Leone Medium Screws (2 WAY) (100)
Low stock (10 units)Regular price LE 8,500.00 EGPUnit price /Unavailable-
Leone
Leone Standard Screws (2 WAY) (100)
Low stock (10 units)Regular price LE 8,500.00 EGPUnit price /Unavailable 
Leone
Low stock (10 units)Regular price LE 4,500.00 EGPUnit price /UnavailableLeone
In stock (30 units)Regular price From LE 900.00 EGPUnit price /Unavailable-
Dentaurum
Dentaurum Hyrax Expansion Screw
In stock (30 units)Regular price LE 1,475.00 EGPUnit price /Unavailable
How to Choose the Right Expansion Screw for Your Practice
- 1-Way vs 2-Way vs 3-Way Activation — A 1-way screw expands along a single axis (typically transverse), a 2-way screw allows independent transverse and sagittal activation from one appliance, and a 3-way (multidirectional) screw adds vertical control for more complex arch discrepancies.
- Turns-Per-Day Activation Protocol — Standard rapid palatal expansion protocols typically call for a quarter-turn once or twice daily, with each full turn producing roughly 0.2mm of expansion; slower semi-rapid protocols reduce this frequency to limit patient discomfort.
- Self-Expanding Leaf Spring vs Manual Screw — A self-expanding leaf spring applies continuous light force without requiring daily patient or parent activation, useful for cases prioritizing compliance-independent expansion over a manual screw's more controllable, higher-force activation schedule.
- Screw Size and Available Expansion Range — Screw body size should be selected against the measured arch width discrepancy, since an undersized screw can reach its full activation range before the target expansion is achieved, requiring a mid-treatment appliance remake.
- Appliance Integration — Expansion screws are embedded in acrylic (removable expansion plates) or soldered into a fixed appliance (Hyrax, Haas-type designs); fixed integration generally delivers more predictable skeletal expansion in growing patients.
- Screw Body Material and Corrosion Resistance — Stainless steel screw bodies should resist corrosion under continuous salivary exposure over the multi-month activation and retention period without the mechanism seizing.
Expansion Screw Types at a Glance
| Type | Activation Axes | Compliance Dependence | Best Suited For |
|---|---|---|---|
| 1-Way (Standard) Screw | Single axis | Daily manual turning | Simple transverse arch expansion |
| 2-Way Screw | Transverse + sagittal | Daily manual turning | Combined width and length correction |
| 3-Way (Multidirectional) Screw | Transverse + sagittal + vertical | Daily manual turning | Complex multi-plane arch discrepancies |
| Self-Expanding Leaf Spring | Single axis | None (passive) | Compliance-independent mild expansion |
Availability & Delivery in Egypt
MedSTA supplies Leone expansion screws priced in EGP with delivery to practices across Cairo, Giza, Alexandria, and all Egyptian governorates. Store screw mechanisms in a dry environment and avoid excessive handling of the threaded shaft before use, since residual moisture can accelerate corrosion of the activation mechanism in Egypt's coastal humidity.
Frequently Asked Questions
1-way vs 2-way vs 3-way expansion screw — what is the difference?
1-way vs 2-way vs 3-way expansion screw — what is the difference?
A 1-way screw expands along a single axis, typically transverse. A 2-way screw allows independent transverse and sagittal activation from a single appliance. A 3-way (multidirectional) screw adds vertical control, useful for cases with a more complex arch discrepancy.
How many turns per day for a standard rapid palatal expansion protocol?
How many turns per day for a standard rapid palatal expansion protocol?
Standard rapid palatal expansion protocols typically call for a quarter-turn once or twice daily, with each full turn producing roughly 0.2mm of transverse expansion; slower semi-rapid protocols reduce the frequency to limit patient discomfort.
When is a self-expanding leaf spring preferred over a manual screw?
When is a self-expanding leaf spring preferred over a manual screw?
A self-expanding leaf spring applies continuous light force without requiring daily activation by the patient or parent, making it useful for compliance-dependent cases, while a manual screw offers more controllable, higher-force activation for cases needing a specific expansion schedule.
How do I select the correct expansion screw size for the needed correction?
How do I select the correct expansion screw size for the needed correction?
Screw body size should be matched to the measured arch width discrepancy; an undersized screw can reach the end of its available activation range before the target expansion is achieved, which forces a mid-treatment appliance remake.
Does MedSTA supply Leone expansion screws across Egypt?
Does MedSTA supply Leone expansion screws across Egypt?
Yes. MedSTA delivers Leone 1-way, 2-way, and 3-way expansion screws to orthodontic practices across Cairo, Giza, Alexandria, and all Egyptian governorates, priced in EGP with nationwide delivery.