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About us

Who is RTD Dental ?

Established in 1968 by Dr. Marc Reynaud, Recherches Techniques Dentaires (RTD) developed and commercialized the fiber- reinforced composite post and is the world-wide leader in this field. RTD is certified ISO 9001 / EN 13485, employs engineers, technicians and chemists, and is protected by a number process and design patents.

Today, RTD produces several of styles and shapes of translucent and tooth-colored posts, as well as cements and other accessory products for post-core restoration and reinforcement. Tens of millions of RTD posts have been successfully placed, in more than 100 countries, and they have been the subject of over 125 technical publications. Because innovation, through research and development, is central to our success, RTD re-invests a large percentage of its capital in human resources and equipment. The RTD development team includes dentists, engineers, and technicians specializing in dental materials science and chemistry.

In 1996, the expanding RTD relocated to a larger, brand new facility in nearby St. Egreve France. The new facility has been enlarged, in 2004, 2006 and again in 2007. In 2014 RTD opened a second facility to handle specific manufacturing operations. All aspects of manufacturing and quality control testing are done in-house. RTD‘s personnel has tripled in recent years.

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Dedication to product innovation

Because innovation, through research and development, is central to our success, RTD re-invests a large percentage of its capital in human resources and equipment for R&D.

The RTD development team includes dentists, engineers, and technicians specializing in dental materials science and chemistry. Collaboration between the RTD team and the academic, clinical and scientific communities allows continued innovation, especially in the field of fiber reinforced composite.
The constant in the forefront of our effort is improvement in mechanical properties; radiopacity, translucence, and the interfaces between the components, which improve fatigue and interlaminate shear strength.

Over 50 years’ time we have adapted and developed innovative materials, equipment and techniques to exercise complete and caring control of the process.

To ensure an adequate, cost-effective world-wide supply of quality posts, RTD has literally invented an “integrated equipment” production line, which includes no less than six separate process steps; synchronized in a continuous pulltrusion process.

The process combines exacting and proprietary combination of temperature, chemistry, speed and tension to produce multiple sizes of its varieties of posts.

About Us Quality Is Key

Quality is Key

RTD is highly automated and uses computer-driven technology to maintain full in-house control over raw materials for the FRC products: degree of polymerization, mechanical properties and dimensional tolerances- to name a few- on all of our posts. The long rods produced by pulltrusion are first visually inspected for aesthetic or physical defects.

RTD is certified 13485 documenting its complete control of this process in order to produce product of consistent quality.

According to ISO specifications, samples from each production run are taken and subjected to flexural strength testing.

Interlaminate Shear Strength (between the fibers and matrix) and degree of polymerization (99%) are also confirmed.

Upon passing these tests, the rod material is machined into the final post shapes using state – of - the-art computer-driven shaping machines, to within tolerances of two hundredths of a mm.

These dimensional specifications are then confirmed with high-tech scanners looking for concentricity and tolerances.

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Our ISO-mandated inventory control system facilitates tracking of all lot numbers of our material after it leaves our docks.

The RTD spirit of quality control also extends to our accessory products, drills, composite resins and discs. Our products are registered in over 100 countries, and were the first fiber post to be registered with the US FDA and Canadian Health Dept. Registration is now completed in such large countries including Russia, Japan, China and Mexico. To achieve this, all RTD products that stay in the mouth must also be proven biocompatible under universal standards.

To achieve these goals, RTD has created specialized laboratories for the synthesis of organic chemistries, and has acquired and integrated high-technology analysis equipment including:

4 fatigue test banks, to measure cyclic fatigue of raw materials, RTD posts and raw materials
3 Universal Testing Machines (Instron-type), for Flexural, Tensile and Push-Out Bond Strength
Chemical and thermal DSC analyzer, to confirm 99.9% polymerization
Thermocycling equipment
Densitometer, to quantify and compare radiopacity
Xenotest apparatus for measuring color stability
Light energy and transmission test equipment, to
Optical scanning microscope
Profilometer to control surface roughness