E-GLASS vs. QUARTZ-GLASS

E-glass in UDMA resin vs. Quartz-glass in Epoxy resin

Why are Biolight posts made from E-glass in a UDMA resin?

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

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

  • 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.

  • Since 2008, Synca posts are now manufactured from the E-glass/UDMA resin matrix. This maintains all the benefits of the 2nd generation product, while offering several advantages.



What is the difference between E-glass and Quartz-glass?

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.



What are the other advantages of SYNCA Biolight Post?

1. Higher radiopacity:


It is possible to make Biolight posts considerably more radiopaque than epoxy posts.


2. Higher bonding with self-adhesive cements:


A recent study undertaken by the University of Toronto compared an epoxy resin post against Biolight Posts. Biolight offered statistically superior bond to self-adhesive cements. A 2013 university study showed that Biolight DUAL benefit from a unique surface roughness that was not present in any other post evaluated.


3. No need to prepare surface for bonding/resin cement:


The subsequent University of Toronto study then evaluated different surface treatment processes and their effect on bond strength. Biolight posts 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.


4. Biocompatibility:


Biolight posts are epoxy-free and BIS-GMA-free.