Good biological BIO HPP Crown Better Restoration Dental Crown
BioHPP in clinical and scientific studies
Knowledge of the mechanical properties of a material is important
in order to be able to determine the envisioned indications from
it. The E-modulus, the maximum fracture resistance, the bond
strength and the polishing properties are crucial factors in this
In cooperation with Jena University (Outpatient Department for
Dental Prosthetics and Materials) and Regensburg University
(Specialist fi eld of Dental Prosthetics), BioHPP was scientifi
cally and clinically assessed during in vitro tests with regard to
the aforementioned material properties.
The E-modulus of BioHPP lies in the range of 4000 MPa, which very
strongly resembles the elasticity of human bone (e.g. in the
mandible). The chewing forces are therefore cushioned, even with
The maximum fracture resistance indicates the force - measured in
Newtons - at which the sample fails (4-part bridge on human stumps
in our trial structure).
Values of up to 1200 Newtons were reached during this test, which,
in comparison to a maximum chewing force of 500 Newtons for a human
bite, represents an adequate safety margin.
With the bond strength it is crucial that the framework can be
veneered with all traditional veneer composites. The advantage here
is that bond strengths of over 25 MPa are achieved using the
adhesive visio.link, whereas the required standard value according
to DIN EN ISO 10477:2004 is a max. 5 MPa.
The polishing properties of BioHPP are of eminent importance. These
properties counteract plaque deposits and discolouration even in
exposed surfaces and framework structures. Gum irritation is ruled
out due to the surface quality of the material and its low rough
depth of 0.018 µm RA (Jena Uni) .