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EXATEC is suitable for teeth that are severely damaged coronally. In the apical area, spiral-shaped retention lines optimize bonding (adhesion) with the composite and provide protection against twisting. For EXATEC posts with a post head, the two longitudinal extraction grooves serve for decompression and allow excess composite to flow out.
High flexural strength & high fatigue and fracture resistance
HT glass fiber, opaque: 1,400 MPa (according to EN ISO 178)
Homogeneous core build-up
Thanks to the dentin-like elastic modulus of 36.4 GPa (according to EN ISO 178), the transmission of masticatory forces to the dentin—and thus the risk of root fracture—is minimized.
Optimized adhesion due to a microporous and retentive surface
The fiber-structured, retentive surface eliminates the need for silanization, as demonstrated by comparative pull-out studies conducted at German universities.
HAHNENKRATT was the pioneering company in Germany in 1995 to manufacture root posts from fiber-reinforced composite materials.
Scientific studies and over 25 years of practical long-term experience—for example, at the ZZMK Carolinum in Frankfurt—demonstrate the superior advantages of our post systems, such as the micro-retentive surface of the post.
Studies at three different German universities confirmed that the unique surface structure results in optimized bonding between the post and the adhesive cement—without the use of silane or primer.
Today, it is undisputed that glass fiber root posts offer advantages for long-lasting, stable root build-up, such as a dentin-like modulus of elasticity to minimize the risk of root fractures. In addition, if necessary, a root canal revision is easier to perform compared to titanium posts.
However, back in 1995, when E. HAHNENKRATT GmbH became the first company in Germany to offer carbon fiber root posts and set the trend, all established manufacturers continued to rely on titanium root posts. After the introduction of Composipost in 1995, universities showed great interest, but it took decades for many to re-evaluate their established conventional views. In 1998, a dissertation at the Medical Faculty of Charité at Humboldt University of Berlin concluded that the use of a fiber-reinforced composite post combined with dual-cure composites was much more labor-intensive than inserting a titanium post using zinc phosphate cement.*) Today, the use of composites and glass fiber root posts is standard practice.
*) The references can be requested from E. HAHNENKRATT GmbH.
In this section, you will find answers to frequently asked questions about our dental instruments, as well as information on the materials, manufacturing, properties, and applications of our products.
Titanium root posts: High rigidity, but higher risk of root fractures
HT glass fiber root posts: Better force distribution, dentin-like modulus of elasticity to minimize root fractures
1. CYTEC
• Material: HT glass fiber (High Tenacity)
• Shape: Cylindrical-conical
• Surface: Micro-retentive, no silanization needed
• Application: For roots that are mostly cylindrical
• Available in various diameters (e.g., 1.0 mm to 2.1 mm)
2. CONTEC
• Material: HT glass fiber (High Tenacity)
• Shape: Double cone
• Surface: Micro-retentive
• Application: For roots with a conical shape
3. EXATEC
• Material: HT glass fiber or titanium (EXATEC-Ti & EXATEC-S)
• Shape: Conical in the apical area, some with a post head
• Surface: Micro-retentive (for glass fiber versions)
• Application: Especially suitable for teeth with severely destroyed coronal areas
The main difference between FS (Front Surface) and RS (Rear Surface) lies in the position of the reflective coating and the resulting image quality:
1. FS (Front Surface) mouth mirror
2. RS (Rear Surface) mouth mirror
The new pro modules feature the same outstanding qualities as the trusted CONTEC and CYTEC root posts, which have been proven for over 30 years, especially through:
pro LightTransmitting along the entire apical area of the post enables optimized and at the same time shortened initial curing of the composite, right up to the tip of the root post. In a tightly scheduled workflow, every second counts, providing valuable time savings so the dentist can proceed immediately to the next step without delay.
HAHNENKRATT mouth mirrors are manufactured with high-quality mirror coatings and precision components.
Front surface mirrors (FS) prevent double images and provide a clear, distortion-free view.
Depending on the model, different coating technologies are used to optimize brightness, contrast, and durability.
This results in reliable optical quality for precise work in everyday dental practice.
The abbreviations SS and CS refer to the thread types of mouth mirrors and their compatibility with handles:
SS (Simple Stem)
Used in Europe and other regions
CS (Cone Socket)
Conical thread (Cone Socket).
Especially common in the USA, Canada, South Korea, and Spain.
