PRECAUTIONS:- Use of direct cores with fiber posts is not indicated for extensive oral rehabilitation in patients with parafunctional habits.
Use of the direct core with fiber post should only be indicated to teeth with a minimum height of 2 mm of coronal dentin.
EXACTO should only be cut with diamond burs on high speed under water cooling.
Scissors and pliers cannot be used.
Use eye protection and a mask to avoid inhalation of particles.
Fiber posts must be completely covered by the cementing agent or the composite resin.
Exposed fibers absorb water which deteriorates the mechanical properties of the posts.
INDICATION: Support of restorations and prosthetic crowns.
Greater radiopacity: allows radiographic visualization Standardized burs with inactive tip: precise calibration of posts according to burs present in the kit; very thin cement layer.
High concentration of fibers: better mechanical properties.
Special glass fiber: excellent transmission of light.
Double taper: matches root canal shape.
Modulus of elasticity similar to dentin´s: lower risk of root fracture.
Silicone stop: identifies post size and indicates place for cutting.
Direct use (prefabricated): saves clinical time and decreases lab costs.
Longitudinal fibers: easy removal Versatility of sizes: indicated for most clinical cases.