Fiber Force Pink Mesh 80x53mm 2pcs
Description
Mesh is used primarily to fabricate reinforcement frameworks for new construction dentures, and can also be used as a repair material.
Each package contains 2 sheets of material 53 mm x 80 mm, which is enough to fabricate at least 2.5 frameworks on average with full palatal coverage.
The Science of Fibers
The efficacy of fibers for the reinforcement of denture base acrylic and other composite resins is well documented.
The research tells us four things:
- Both metal and fibers reinforce acrylic/composite, to varying extents
- Fibers reinforce more than metals
- Some fiber materials are stronger than others (eg. E-glass stronger then polythelene)
- Some types of fibers reinforce more than others (eg. UD or uni-directional fibers are more resistant than braided fibers).
The attraction of using E-glass material is due to its physical properties. As seen in the table below, E-glass has on one hand a very high tensile strength, yet on the other hand is a relatively elastic material. This is ideal for the type of stress forces seen intra-orally: repetitive forces that place a long-term strain on the appliance. Due to their inherent fatigue resistance FiBER FORCE® reinforcements allow the appliance to stand up to the stresses delivered.
Material | Tensile Strength (MPa) | Young's Elastic Modulus (GPa) |
E-Glass | 2000 | 80 |
Steel | 531 | 200 |
Titanium alloy | 900 | 105-120 |
Stainless steel | 860 | 195 |
Chrome - Cobalt | 750 | 225 |
Chrome - Nickel | 570 | 170 |
Enamel | 10 | 100 |
Dentin | 100 | 20 |
Cortical Bone | 170 | 20 |
PMMA | 70 | 6 |
The overall level of reinforcement is further improved by the synergistic way the FiBER FORCE® and the acrylic/composite work together. With two materials bonded together chemically a "monoblock" is created - making the whole more resistant than the sum of its parts. This monoblock also shares and distributes loads in a more even way, as the FiBER FORCE® and the acrylic/resin have similar elastic properties. Thus the problems created when a very rigid material is simply sandwiched into the acrylic/composite are completely avoided.
Fracture Resistance
Internal data from the manufacturers of FiBER FORCE® compared the fracture resistance of unreinforced full upper dentures to those reinforced with mesh. Test results showed a 300% increase in fracture resistance with mesh reinforcement.
FiBER FORCE® dentures | 238.8 MPa to 271.6 Mpa |
Traditional dentures | 75.2 MPa to 83.2 MPa |
Comparative Fracture Resistance of Denture Acrylic repairs
One study that looked at the effect of reinforcing acrylic with E-glass FRC showed that repaired acrylic is never as strong as it was originally. Using E-glass braided fibers returned the repaired acrylic to its original strength, while using UD fibers increased the resistance of the acrylic beyond its original strength.
Repaired denture acrylic without fiber reinforcement | 46.7 N |
Repaired denture acrylic with woven pre-impregnated e-glass fibers | 75.8 N |
Control group (new denture acrylic) | 78.6 N |
Repaired denture acrylic with UD pre-impregnated e-glass fibers | 124.4 N |
