Pekkton® ivory

High performance polymer for definitive aesthetic restorations on implants

To meet the demanding biomechanical criteria of prosthetic solutions, Cendres+Métaux has secured the exclusive rights to Pekkton® (PEKK): the top product among thermoplastic polyaryletherketones.



High performance polymer
  • Has similar characteristics to those of human bone
  • Shock absorption
  • Light-weight and natural for the patient
Pekkton® ivory
  • Available exclusively from Cendres+Métaux
  • The latest generation of polymers
Shock-absorbing: excellent for your restoration on implants
  • Shock-absorbing
  • Metal-free
  • Similar properties to biological materials
  • Extremely low water absorption
  • Caries control
  • Visible in the X-ray (non radiopaque)
  • Excellent «weight-to-strength ratio»
  • Can be sterilised
  • Biocompatible
For milling and pressing: easy to mill and perfect to polish
  • For an excellent fit and full control in the dental laboratory
  • Time savings and guaranteed consistent quality throughout the digital process
Aesthetic: high flexibility in the choice of veneering
  • Composites
  • Shells
  • Teeth
  • Ceramic crowns
Definitive: happy patients thanks to the natural feel in the mouth
  • Strong and light
  • No metal allergies
  • No taste
  • No thermal or electrical conductivity

Excerpt

Order-Nr. Product

0106 0011
0106 0020
0106 0022
Milling blank (with steps)
⌀ 98.5/16mm
⌀ 98.5/20mm
⌀ 98.5/24mm

0106 0028
0106 0030
0106 0032
Milling blank (compatible with Zirkonzahn®)
⌀ 95/16mm
⌀ 95/20mm
⌀ 95/24mm
0106 0003 Press ingots (10 p.)

0800 0626
0800 0627
Disposable press-stamp (without seal)
⌀ 12mm (50 p.)
⌀ 26mm (20 p.)

0800 0628
0800 0629
PEKKpress muffle former set
200g
600g
7020 2393 PEKKpress – pressing unit
7020 2394 PEKKtherm – temperature stabilisation and melting furnace
Pekkton® ivory is based on OXPEKK® by OPM, Oxford Performance Materials, Inc., USA.

Processing

1. Can material be reused?
No. Too much effort would be involved in cleaning the material properly. Risk of impurity inclusions.

2. What composite veneering materials can I use?
Pekkton® ivory was successfully tested with various veneering composites, including SR Nexco (Ivoclar Vivadent), Gradia (GC), Ceramage (Shofu), VitaVM LC (Vita Zahnfabrik), Anaxblend and Anaxflow (Anaxdent), S.LAY (WEGOLD Edelmetalle) and Signum (Heraeus Kulzer).

3. If a bridge doesn’t fit, can it be separated and rejoined?
No, this is not possible.

4. How good is the precision?
The precision of single crowns is between 20 μm and 50 μm so it meets the clinical requirements of 50 μm to 120 μm maximum. However, precision always depends on how accurately the dental technician works.

5. What is the difference between Pekkton® and PEEK?
In contrast to its competition, Pekkton® ivory has one additional ketone.
One additional ketone results in better mechanical properties.

Benefits for the user:
  • Better, easier and faster to polish
Benefits for the dentist:
  • Surface is more attractive and more compact, thus decreasing the risk of bacterial colonization
  • Less risk of chipping

The structure of the base monomers is different. The ketone / ether ratio results in different mechanical and physical properties.
The structure of the polymers is different and the process behavior leads to different results in terms of strength, rigidity, melting point and melting behavior.

6. Indication for a removable restoration: can removable prostheses (model casting) be realized with clasps? If yes, under what conditions?
For dental applications, Pekkton® ivory is the most stable high-performance polymer on the market and ideal for fixed restorations. Due to its outstanding properties, the material is also an excellent choice in cases where a removable restoration is indicated. Compared to PEEK, however, Pekkton® ivory is less flexible. Due to the current lack of clinical experience using clasp prostheses, we do not recommend this indication at this time.

7. Wax weight
You can press up to 0,6g wax with a Pekkton® ivory press ingot (1g).

Scientific knowledge

1. What is the situation regarding the formation of biofilm?
Results always depend on surface roughness. If surface quality is comparable, biofilm formation on high-performance polymers is less than on metal alloys, but slightly more than on ceramics.

2. Regarding bridges, how many units are possible?
State of development today: With Pekkton® ivory, screw-retained bridges on implants (bonded to titanium bases) with maximum two pontics in the anterior and posterior region can be fabricated. Bridges on natural teeth with maximum one pontic.

Material science

1. What is the shrinkage of Pekkton® ivory?
≈ 1.3 % (volume).

2. Why is Pekkton® ivory darker/grayer than competitor products?
The focus of development was its chemical and mechanical properties, not the color. Any change to the color, similar to that of competitor products, would be at the expense of its excellent properties. The whitish-gray color is neutral and provides the ideal basis for reproducing the desired tooth shade.

3. Can the residual material from milling blanks that are no longer suitable for use be utilized for the pressing technique?
Practice has shown that metal shavings or other impurities can build up after milling pure, implant-quality Pekkton® ivory. To maintain the high standard of quality and for reasons of traceability, we advise against the reuse of residual materials.

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Clinical cases

Robert Arvai, Chur (Switzerland).


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The PAEK family

PEEK, PEKK – these terms are both numerous and confusing, but these materials all have one thing in common: they belong to the family of poly-aryl-ether-ketones, known as PAEK for short. PAEK are high-performance thermoplastics which, thanks to a wide temperature range, have high strength, rigidity and resistance to hydrolysis and are suitable for extremely demanding conditions. When thermoplastics are processed, it is only the form and not the chemical property that is altered. A crucial advantage! The material also does not display any porosity or monomers.

The best-known family member: PEEK
In recent years, poly-ether-ether-ketone (PEEK) has become synonymous with top-class high-performance polymers. PEEK enjoys widespread acceptance in medicine and is well established in several specialisms.

The latest generation: PEKK
Not just theory, but practical studies prove the advantages of poly ether ketone ketone (PEKK) in dentistry. Unlike PEEK, PEKK displays both amorphous and crystalline material properties. This makes PEKK particularly interesting. Thanks to its unique mechanical, physical and chemical properties, PEKK lends itself to a broader range of uses than PEEK:
  • up to 80% greater compression strength than PEEK
  • wider processing window of parameters than PEEK

PEKK stands at the apex of the PAEK family.

The PEKK chemical structure guarantees the best mechanical properties of all PAEK. The PEKK has for example up to 80% greater compression strength than PEEK.

In contrast to its competition, Pekkton® ivory has one additional ketone.
One additional ketone results in better mechanical properties.

Benefits for the user:
  • Better, easier and faster to polish
Benefits for the dentist:
  • Surface is more attractive and more compact, thus decreasing the risk of bacterial colonization
  • Less risk of chipping

The structure of the base monomers is different. The ketone / ether ratio results in different mechanical and physical properties.
The structure of the polymers is different and the process behavior leads to different results in terms of strength, rigidity, melting point and melting behavior.


↑ Back to overview