dt post dimension

Optimal post shapes

Apical portion at .02 taper conserves the apical tooth structure, allows for use of longer posts and reduces the risk of incorrect post room preparation. With middle portions or varying tapers, DT Post® follows the natural shape of the canal walls, reducing the need for canal modification and optimizing post strength. The larger diameter, parallel coronal portion offers a significantly stronger post than either a single taper or parallel alternative, while reducing the amount of resin cement in the coronal space. (1), (2)

1. Pierre Boudrias, DMD, MSD, Salam Sakkal, DMD, MSD, Yuliana Petrova DMD. - Anatomical Post Design Applied to Quartz Fiber/Epoxy technology: A conservative approach. - Oral Health, November 2001

2. Pierre Boudrias, DMD, MSD, Salam Sakkal, DMD, MSD, Yuliana Petrova DMD. - Anatomical Post Design Meets Quartz fiber technology: Rational and case report. - Compendium, April 2001. - 337-348

Trust your crown and bridge work to DT POST®!

Unlike metal or ceramic, fiber posts exbibit physical properties that are very similar to dentin. This reduces stress transmission to the root, avoiding the possible irreversible longtitudinal fracture associated with other materials. Early clinical studies by Mannoci and Ferrari showed a 9% root fracture rate with cast posts at 4 years vs. a 0% fracture rate with fiber posts at 4 years.

Eliminate Root Fractures with DT POST®

DT POST® is manufactured from advanced glass fibers in a UDMA matrix. The modulus of elasticity closely resembles that of natural dentin, thus preventing the transmission of occlusal forces to the root. Stainless steel, zircanium and titanium posts transmit occlusal forces to the root, increasing the risk of root fracture. (3)

3. Asmussen E., Peutzfeld A., Heitmann T. - Stiffness, elastic limit and strength of newer types of endodontic posts. - J. Dent, 27. - 1999. - 275-278

Comparative analysis of modulus of elasticity (GPa)

dt post modulus graph

Create a safe mono-block restoration

DT POST® create strong bonds to resin cements, bonding agents (if used), and composite build up materials. These products, in turn, exhibit strong bonds to dentin. Since the fiber post offers a modulus of elasticity that close to that of dentin, the result is a completely bonded restoration with a safe distribution of occlusal forces that does not contribute to root fracture.


DT POST® and LOGIPOST® ISO use a UDMA resin matrix, well documented for its excellent biocompatibility. (4)

4. RadTech Europe 2005 Conference & Exhibition


Q. Why are DT POST® and LOGIPOST® ISO now made from E-glass in a UDMA resin?

A. Between 2001 and 2007, the 2nd generation Synca DT POST® was made from a Quartz glass in an epoxy resin. At that time, a manufacturer using quartz glass/epoxy resin offered superior fracture resistance and resistance to breakdown in cyclical fatigue testing over other manufacturers.

By 2004, CRA testing showed that another post manufacturer using E-glass in a UDMA resin exhibited the best fracture resistance overall. In this 2004 CRA study, all esthetic fiber posts are classified together as glass fiber and exhibited the following physical properties:

Post Brand Manufacturer Force required to break post (newtons)
DT POST® Synca 133*
Light Post® R.T.D. 117
Parapost White® Coltène/Whaledent 99
Snow Post® 74

*this test was completed on an earlier version; new version exhibits the same physical properties but is more radiopaque.

In addition, an important cyclical fatigue study published in Dental Materials showed that only 2 post manufacturers, namely the 2nd generation and 3rd generation fiber posts sold by Synca, were able to produce posts that resisted over 2,000,000 cycles of fatigue.

All other brands (including: ParaPost Fiber White™, FibreKor™, Luscent Anchors™ and Snowpost™) failed.

To offer continual progress to our clients, Synca DT POST® is now made from the E-glass/UDMA resin matrix. This maintains all the benefits of the 2nd generation product, while offering several advantages.

Some sellers of Quartz glass posts would want you to believe that Quarts posts are better, but this is simply not backed up by independent research.

Q. What is the difference between Quartz Glass and E-Glass?

A. Both these glasses are used in a variety of applications and have the same main ingredient: SiO2. With respect to dental posts, performance is not related at all to the type of glass used. It is relative to the combination of glass fiber/resin matrix and the processes used in manufacturing.

Q. What are the other advantages of Synca DT POST® (2007)?


Higher radiopacity:

It is possible to make DT POST® considerably more radiopaque than epoxy posts.

Higher bonding with self-adhesive cements:

A recent study undertaken by the University of Toronto compared an epoxy resin post against DT POST®. DT POST® offered statistically superior bond to self-adhesive cements.

No need to prepare surface for bonding/resin cement:

The subsequent U of T study then evaluated different surface treatment processes and their affect on bond strength. DT POST® achieved the same high bond strength without the need for surface preparation.

Previous studies with Quartz glass/Epoxy posts showed that surface treatment (H2O2 and Silane) was necessary to achieve highest bond strengths.


UDMA resin has been shown in numerous studies to be extremely biocompatible with very low toxicity. Studies on Epoxy show varying results.

Higher radiocapity

The number 1 complaint of previous fiber post systems is the difficulty of detecting the post on a radiograph. DT POST® and LOGIPOST® ISO have a considerably higher level of radiopacity.

dt post radiopaque

1. Pentron®'s FiberKleer™
2. R.T.D.®'s D.T. Light-Post® Illusion™
4. Coltene®'s ParaPost® Fiber Lux
5. Coltene®'s ParaPost® Taper Lux

Ideal under esthetic restorations

The transparent white color of DT POST® and LOGIPOST® ISO is invisible under all modern esthetic materials used for browns and bridges.

dt esthetic dt esthetic

2 Million cycles of fatigue resistance testing without failure*

Dental Materials Volume 21, issue 2, February 2005, pages 75-82
– ALL other post systems failed

dt post fatigue resistance

*Based on the materials used to make an earlier version of DT POST®

Up to 229% more force required to break*

DT POST® required a force of up to 229% greater to break than other posts evaluated. (CRANEWS, May 2004)

dt post break resistance

*Based on the materials used to make an earlier version of DT POST®

Higher Bond Strengths with self-adhesive resin cements

In a comparative study, DT POST® exhibited between 15% and 63% higher microtensile bond strength, depending on the brand of self-adhesive resin cement that was used.

dt post bond

*Trademarks of their repective manufacturers

Excellent light transmission for use with dual-cure resins

DT POST® and LOGIPOST® ISO offer excellent light transmission to quickly activate dual-cure cements.

dt post light transmission
dt post Double taper post system
biolight dual Double taper post system
logipost iso ISO taper post system
biolight st Single taper post system