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Vertex Castavaria, The Generation Next

There is a complete misunderstanding saying that Hot Cure acrylics are grossly superior to Cold Cure systems. This is false and not in accordance with latest Research and Developments which resulted in premium innovations. Presently, it is the right timing to make things more clear about the New generation of Cold Cure / Pour type acrylics and Vertex-Dental’s success no.1 “Vertex Castavaria”.

In Europe, denture Base Hot/Cold Cure Acrylics have to be CE-Certified in class IIa and the physical properties are tested in accordance with ISO 20795 (2008); Base Polymers – part 1 Denture base polymers. This international standard replaces the well known ISO 1567 (2001).

There is a complete misunderstanding saying that Hot Cure acrylics are better than Cold Cure acrylics. So it is time to give a full and detailed explanation in this regard.


To keep control of Premium quality, the ISO/TC106 committee specified the limits of Denture base polymers for their application as a denture in the mouth of a patient.


The most important properties to compare materials are:

The flexural strength which actually explains the endurance of a materials in the mouth, tested through three-point bending.

The flexural modulus says something about the capability of the material to absorb forces, in other words the elasticity of materials.

The water sorption says something about the amount of absorbing liquids by the denture for instance coffee or tea.

The water solubility gives an indication about the migration of materials out of the denture for instance rest monomer.

Charpy impact strength is the capability to absorb impact forces (embedding/dropping) on the denture.

Color stability gives an indication about the stability in color of the denture in relation with time for instance by aging of the accelerator systems or discolorisation of the pigments.

Bonding to the acrylic teeth where 5 out of 6 teeth must show no clean bonding surface after having been removed by pulling force.


So let us compare the ISO 20795: type I, class 1 standards for Heat Cured denture base polymers with our Cold Cure Vertex Castavaria properties and the result are amazing:



The flexural strength:
- Physical prop. Acc. ISO20795
at least 65 MPa

- Vertex Castavaria
72 ± 2 MPa

The flexural modulus:
- Physical prop. Acc. ISO20795
at least 2000 MPa

- Vertex Castavaria
2149 ± 47 MPa

The water sorption:
- Physical prop. Acc. ISO20795
no more than 32µg/mm³

- Vertex Castavaria
25.5 ± 0.3µg/mm³

The water solubility:
- Physical prop. Acc. ISO20795
no more than 1.6µg/mm³

- Vertex Castavaria
1.3 ± 0.2µg/mm³

Charpy impact strength: 
- Physical prop. Acc. ISO20795
at least 8 kJ/m² (unnotched) 
- Vertex Castavaria
9.1 ± 1.1 kJ/m²

Color stability:

- Physical prop. Acc. ISO20795
no chance in color
- Vertex Castavaria


The conclusion is that Vertex Castavaria is superior because it reaches all specification limits in accordance with ISO 20795: type I, class 1 for Hot / Heat Cure denture base polymers.

Zeist, 15-09-2010 by Rik Jacobs / Connie Peterse van der Koppel

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As previously announced, Vertex-Dental and Nextdent shall be moving into new headquarters next year.
24 Oct 2014 - ThermoSens training for Excent Tandtechniek Hellevoetsluis in The Netherlands
On the 21 st of October our international trainer Menno Pot provide a ThermoSens training to 5 dental technicians from Excent Tandtechniek...
15 Oct 2014 - The 7th World Dental Show 2014, Yokohama, Japan
The 7th World Dental Show 2014, Yokohama, Japan took place in October.
11 Sep 2014 - Three new colors are added to the ThermoSens shade guide
Vertex-Dental adds three new colors to the ThermoSens shade guide using the AIM system.
10 Jul 2014 - The managing board from Vertex-Dental B.V. signed the papers for starting the build of the new HQ in Soesterberg
On 10 th of July Rik Jacobs (director sales & marketing) from Vertex-Dental signed the papers for building the new headquarters for...
23 May 2014 - Train the trainer days in The Netherlands, Zeist
On 19 th till 21 st of May Vertex-Dental trained its new and international trainers on creating ThermoSens over dentures.
03 May 2014 - ThermoSens training in Greece
On May 3rd our international trainer Javier Ubeda trained 14 people in Athens on Vertex ThermoSens.
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