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Fiber Post

(20 products)

Fiber posts are glass or quartz fiber-reinforced composite root canal posts used to restore severely broken-down endodontically treated teeth, offering an elastic modulus closer to dentine than metal posts, which reduces the risk of root fracture under functional load.

MedSTA supplies fiber posts in EGP with nationwide delivery across Egypt. Explore our complete Posts and Drills range, or shop all dental supplies available for fast delivery from MedSTA.

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How to Choose the Right Fiber Post for Endodontically Treated Teeth

  • Elastic Modulus — Glass fiber posts have an elastic modulus of 18–40 GPa, significantly closer to dentine (18 GPa) than metal posts (190–200 GPa). This modulus-matching reduces stress concentration at the post-dentine interface, lowering the risk of catastrophic root fracture under functional load — the key clinical advantage over metal systems.
  • Post Diameter Selection — Post diameter must not exceed one-third of the root width at any level. Standard diameters range from 1.0–2.0 mm (ISO size 1–5). Narrow roots (mandibular incisors, lower premolars) require ISO size 1 (1.0 mm); molar roots accommodate larger diameters without compromising residual dentinal wall thickness.
  • Taper and Length — Most fiber posts have a slight taper (0.04–0.08) matching root canal anatomy. Post length should equal the clinical crown height where possible; a minimum apical gutta-percha seal of 4–5 mm must be maintained below the post tip regardless of selected length.
  • Surface Treatment for Bonding — Fiber post surfaces are pre-treated with silane coupling agent during manufacture; additional air abrasion with 50 µm alumina or silane application immediately before cementation improves bond strength to dual-cure resin cement by 20–35% in published studies.
  • Cementation Protocol — Use a dual-cure adhesive resin cement with MDP monomer (Panavia, RelyX Ultimate) or a self-adhesive resin cement. Dual-cure activation ensures complete polymerisation at canal depths inaccessible to curing light alone.
  • Ferrule Requirement — A minimum 2 mm ferrule of sound coronal dentine above the finish line is essential; without ferrule, no post material can reliably resist crown failure under function regardless of diameter or cement quality.

Fiber Post Systems at a Glance

ParameterGlass Fiber PostsQuartz Fiber PostsMetal Posts (comparison)
Elastic modulus18–40 GPa40–60 GPa190–200 GPa
Failure modeRetrievable (repairable)RetrievableRoot fracture (non-repairable)
RadiopacityModerateLow-moderateHigh
Cement typeDual-cure resin cementDual-cure resin cementResin or GIC

Availability & Delivery in Egypt

MedSTA supplies glass fiber posts in ISO sizes 1–5 from multiple brands including RTD (France), overfibers, incidental, and economy generic kits, priced in EGP from 35 EGP per post. Cairo and Giza delivery within 1–3 business days; nationwide Egypt within 3–5 business days.

Frequently Asked Questions

What is the clinical advantage of fiber posts over metal posts?

The primary advantage is elastic modulus matching: glass fiber posts have a modulus of 18–40 GPa, compared to dentine at 18 GPa and metal posts at 190–200 GPa. Metal posts create a stress concentration mismatch predisposing to root fracture — a non-repairable failure requiring extraction. Fiber posts flex with the root under load, transmitting stress more evenly and producing retrievable crown or post fractures rather than the catastrophic root fractures associated with rigid metal posts.

How do I select the correct fiber post diameter for different root sizes?

Post diameter must not exceed one-third of the root width at any level. For narrow roots (lower incisors, lower premolars), ISO size 1 (1.0 mm) or size 2 (1.2 mm) is indicated to avoid excessive dentinal removal. Upper central incisors and upper premolars typically accommodate ISO size 3 (1.4 mm) or size 4 (1.6 mm). Always use the manufacturer’s matched drill — generic drills may overcut the canal diameter, reducing residual dentinal wall thickness below the 1.0 mm minimum.

Which cement should be used to bond a glass fiber post?

Dual-cure resin cement with MDP monomer (Panavia series, RelyX Ultimate, Multilink) is the gold standard for fiber post cementation because it bonds chemically to the silane-treated glass fiber surface and ensures complete polymerisation at canal depths inaccessible to curing light. Self-adhesive resin cements (RelyX Unicem) simplify the protocol and perform comparably in most studies. Zinc phosphate and glass ionomer cements are not recommended — their bond strength is insufficient for post retention under lateral functional loading.

Does a fiber post require a ferrule effect to succeed long-term?

Yes — a minimum 2 mm band of sound coronal dentine above the finish line (the ferrule) is essential for long-term success of any post-and-core restoration, including fiber posts. Without ferrule, no post material can reliably resist crown fracture under function. In teeth lacking adequate coronal dentine, orthodontic extrusion or surgical crown lengthening to expose a ferrule is preferable to placing a post in a compromised crown remnant.

Does MedSTA supply glass fiber posts in multiple sizes across Egypt?

Yes — MedSTA supplies glass fiber posts in ISO sizes 1 through 5 from multiple brands including economy kits (from 115 EGP), overfibers refills, and incidental brand posts sold individually from 35 EGP, allowing clinics to match post size to specific root anatomy without committing to large bulk packs. All products are priced in EGP with Cairo delivery within 1–3 business days and nationwide Egypt within 3–5 business days.

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