In 1995, E. HAHNENKRATT GmbH was the first company in Germany to produce root posts made from fiber composite materials. Well-founded results from scientific studies as well as practice-oriented long-term experience for more than 25 years – such as at the ZZMK Carolinum in Frankfurt since 2003 – show superior advantages of the Cytec, Contec and Exatec post systems, such as the high fracture resistance or the micro-retentive post surface.

Cytec was newly complemented by the diameters 1.0 mm and 1.6 mm and Contec by the diameter 1.1 mm.

A recent test carried out at the IVW Institute in Kaiserslautern determined, among other things, the flexural strength of various root posts. The Cytec root posts from HAHNENKRATT achieved a high value of 1180 MPa on average .

The results for our 1.0 mm diameter Cytec root posts gave a bending strength of 1770 MPa on average.

This current result confirms earlier results on fatigue and fracture resistance from scientific comparative studies conducted, for example, at the Charité University in Berlin in 2004 :

Highest fracture resistance for Cytec blanco: 348.8 N (mean value)

Highest fracture resistance for Cytec carbon: 407.0 N (mean value)

Test specimens with Cytec blanco achieved an even higher fracture resistance of 509 N (median) in another study. in vitro. In comparison, scientific studies indicate a chewing stress of 30 – 80 N for premolars and canines and 150 – 250 N for incisors. an.

The unsurpassed flexural strength and high fatigue resistance are achieved by using high-strength HT glass fibers from the S/R group.

Cytec and Contec also differ from other root posts in the special mesh structure of the post surface. This micro-retentive surface supports the adhesive bond between the post and the resin (bonder/composite). The result is a secure adhesion – without the use of a silane – quite simple and efficient. This is confirmed by studies at three different German universities.