Glass Fiber Post
Polydentia GF Posts

Advantages

White opaque posts with 80% glass fibers: strength, reliability and highest aesthetics.

  • Great aesthetic


  • High strength and reliability


  • Biocompatible


  • Approved by the Faculty of Medicine, Laboratory of Biophysics of the University of Lille, France


  • Elasticity modulus similar to that of dentine


  • Homogeneous distribution of forces


  • No stress concentrations in the dentine or root fractures


  • Excellent and strong adhesion to the core composite


  • Easy and fast to remove


  • Tissue sparing preparation


  • Direct composite core build-up in a single session


  • Can be autoclaved at 134 °C (273 °F)

Description

Polydentia GF Posts provide an excellent alternative to metal posts, and are the ideal solution for aesthetic restorations on both anterior and posterior teeth.

The post consists of a large number of unidirectional, individual glass fibers (diameter: 20 μm), embedded in a polyester resin matrix (a material especially appreciated for its allergy safety). The parallel, longitudinal fibers reinforce the post’s structure and enhance its flexibility.
The glass fiber post can be easily shortened at the required length; nevertheless, it is recommended to section the post perpendicularly to its long axis by using a medium or coarse diamond bur or separating disc, in order to prevent fraying of the micro-fibers.
The white, opaque color of Polydentia GF Posts ensures excellent aesthetic results, without undesirable coloring in the cervical area of the tooth.
If endodontic retreatment becomes necessary, the post can be easily removed by drilling, despite its high mechanical strength provided by the parallel fiber structure. Any commercial fiber post removal kit can be used.

The full length of the Polydentia GF Posts is 20 mm (.78”). These posts are available in four different sizes: 1.1-1.3 - 1.5 -1.7 mm (.043” -.051” - .059” - .067”) diameter.

The GF Posts Kits include matching drills (1.1-1.3-1.5-1.7 mm) which ensure a perfect placing of the post. The drills are also available separately as refills.

Mechanical properties:
The elasticity modulus of glass fiber posts is 42 GPa, which is very close to that of dentine – allowing a regulation of applied forces by redistributing them throughout all the dentine components. In contrast to this, metal posts have an elasticity modulus of 210 GPa, titanium posts 110 GPa, gold 77 GPa and zirconium dioxide 200 GPa. Glass fiber posts possess a very high mechanical resistance to compression (650 MPa). In addition, the stability of the post-and-core restorations is also increased by the high flexural strength (1500 MPa) of the post.

 

Drills for Fiber posts
Occlusal forces ditribution