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100% digital retainer made of PEEK

The most aesthetic, durable, and comfortable orthodontic retainer – designed for a lasting smile.

Retainer milled and polished from a single block of PEEK

The most aesthetic, durable, and comfortable orthodontic retainer – designed for a lasting smile.
Detail Detail icon
Mini-extension = 0.5 mm in height
Detail Detail icon
Bandeau = 1 mm de hauteur – soit 0,04"
Detail Detail icon
Thickness = 0.50 mm – that is, 0.02"
Mini-extension = 0.5 mm in height
Bandeau = 1 mm de hauteur – soit 0,04"
Thickness = 0.50 mm – that is, 0.02"
The most aesthetic, durable, and comfortable orthodontic retainer – designed for a lasting smile.
The most aesthetic, durable, and comfortable orthodontic retainer – designed for a lasting smile.
The most aesthetic, durable, and comfortable orthodontic retainer – designed for a lasting smile.

PEEK (Polyetheretherketone)

The most suitable material

PEEK belongs to the category of high-performance polymers, positioned at the top of the thermoplastics pyramid. It offers exceptional mechanical and thermal properties, unmatched by standard engineering materials.

This premium-grade thermoplastic is primarily used in high-value applications within demanding sectors such as aerospace, energy, and medicine.

In the medical field, PEEK is notably used to replace intervertebral discs or as a framework for dental prostheses, thanks to its remarkable strength and flexibility.

 

 

  • Does not deform with chewing
  • Does not break
  • Slight flexibility
  • Biocompatible
  • Aesthetic
  • Does not discolor
  • Does not attract dental plaque
  • Metal-free
  • Precision milling down to the micron

 

Material Young’s modulus
PEEK 4 Gpa
3-strand stainless steel, 0.215 151 Gpa
Nitinol 75 Gpa

Where chewing can cause plastic deformation in our metal retainers, PEEK will always remain within elastic deformation. It even performs better than NiTi.

Excellent fatigue resistance compared to steel and NiTiNOL

https://eztain.com/wp-content/uploads/2024/09/Gif_Eztain_sans-pad1.gif
Advantages
A retainer built for the long term
  • Excellent mechanical resistance to fracture and torsion
  • Outstanding wear resistance
  • Flexible material
  • Milled from a single block
  • Milled in all three spatial dimensions
  • Resistant to aging-related degradation
  • Maintains its original color over time
A retainer suitable for all patients :
  • Biocompatible material
  • Chemically inert (resistant to acidic food exposure)
  • Hypoallergenic
  • Metal-free (no Nickel)
  • Can be sterilized
  • Natural aesthetics with A2 or White shade
  • Reduced dental plaque: perfectly polished surface with no undercuts
  • Preserves physiological tooth movements thanks to the material’s flexibility
  • No artifacts in radiographic examinations
  • No electrolytic conductivity
A retainer that’s comfortable for both patient and practitioner :
  • Natural feel in the mouth
  • Flexible material : more comfortable than rigid alternatives
  • Polished, smooth surface with gentle geometry
  • Perfect 3D fit
  • No occlusal interference
  • Easy to place and position
  • Very quick bonding
  • No discomfort from wires that can irritate the tongue

Bonding protocols

To be followed for optimal and hassle-free bonding

Bonding protocols
Sandblasting to remove all plaque and improve the bonding surface.
Rinsing + Drying
Bonding protocols
Etching with 35–37% phosphoric acid for 15 to 30 seconds
Bonding protocols
Thorough rinsing + drying.
Carefully check for a chalky white appearance of the enamel
Bonding protocols
Apply Scotchbond adhesive for 20 seconds on the lingual surfaces, then air-dry for 5 seconds.
Follow with light curing (photopolymerization)
Bonding protocols
Apply a drop of flowable composite on each tooth
Bonding protocols
Position the retainer onto the composite spots. Adjust the positioning using a probe.
Perform light curing (photopolymerization).
Bonding protocols
Cover the retainer with Transbond LR composite.
Shape the composite using a microbrush
Bonding protocols
Light cure each composite spot for 10 seconds
To be followed for optimal and hassle-free bonding
Bonding protocols
Sandblasting to remove all plaque and improve the bonding surface.
Rinsing + Drying
Bonding protocols
Etching with 35–37% phosphoric acid for 15 to 30 seconds
Bonding protocols
Thorough rinsing + drying.
Carefully check for a chalky white appearance of the enamel
Bonding protocols
Apply Scotchbond adhesive for 20 seconds on the lingual surfaces, then air-dry for 5 seconds.
Follow with light curing (photopolymerization)
Bonding protocols
Apply a drop of flowable composite on each tooth
Bonding protocols
Position the retainer onto the composite spots. Adjust the positioning using a probe.
Perform light curing (photopolymerization).
Bonding protocols
Cover the retainer with Transbond LR composite.
Shape the composite using a microbrush
Bonding protocols
Light cure each composite spot for 10 seconds

eZtain : where innovation meets peace of mind –
Retainers that change the game

Intellectual Property

  • Patent filed on August 22, 2017, in France
  • Granted and in effect since March 1, 2019
  • REF : FR3070256A1
  • Supported by HEGE Conseil

Regulations

  • Complies with the requirements of EU Regulation 2017/745
  • Manufactured under controlled conditions
  • Device monitoring – Materiovigilance in place
  • CE-certified raw materials
  • Instructions for use available
  • Declaration of each device to the ANSM (French National Agency for Medicines and Health Products Safety)

Development was carried out in partnership with INSA

  • 9 times stronger than a 0.016″ x 0.016″ steel retainer
  • 8 times stronger than a 3-strand 0.0215″ retainer
  • 6 times stronger than a Penta-One retainer
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