The effect of glass fibre-reinforcement on the transverse strength, deflection and modulus of elasticity of repaired acrylic resins

✍ Scribed by Associate Professor Dr. Filiz Keyf; Gülay Uzun

• Publisher: FDI World Dental Federation
• Year: 2000
• Tongue: English
• Weight: 658 KB
• Volume: 50
• Category: Article
• ISSN: 0020-6539
• DOI: 10.1002/j.1875-595x.2000.tb00805.x

✦ Synopsis

Aim:

To test the effect of reinforcement qualities of glass fibre in the repair of acrylic fractures.

Methods:

Four types of heat-curing acrylic resin test specimens were fabricated. the bottom and sides of the specimens were placed in stone to form a repair template. lines were drawn 3.5 mm on each side of the centring mark. the 45 degree-bevel joint margins were cut at these lines to simulate fracture and the centre section was discarded. a 1 mm gap was created between the margins before repair with autopolymerising acrylic resin with and without glass fibre.

Outcome measures:

A three-point loading test was used to measure transverse strength, deflection and the modulus of elasticity of repaired acrylic resin joints.

Results:

The transverse strength of acrylic resins was increased with fibres.

Conclusion:

Glass fibre-reinforcement significantly increased resistance to deflection and increased the modulus of elasticity.