PMMA bone cement is an acrylic polymer formulated specifically for orthopedic and dental fixation, typically supplied as a two-component system (powder and liquid monomer) that polymerizes in situ to create a rigid, biocompatible interface. It is widely used in joint replacement surgery, spinal instrumentation, and dental prosthetics to mechanically interlock implants with bone and provide load transfer; engineers select it for its established biocompatibility, ease of application, and decades of clinical track record, though it is gradually being supplemented by newer formulations offering improved mechanical properties and reduced exothermic curing reactions.
Compliance & Regulations
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Compressive Strength(σc) | 90.00 | MPa | ISO 5833 | ||
Fatigue Strength (10⁷ cycles)(σf) | 14.00 | MPa | notes | ||
Flexural Strength (MOR)(σf) | 65.00 | MPa | ISO 5833 | ||
Fracture Toughness(KIC) | 1,500,000 | Pa·√m | — | ||
Poisson's Ratio(ν) | 0.3800 | - | — | ||
Ultimate Tensile Strength(σUTS) | 35.00 | MPa | — | ||
Young's Modulus(E) | 2.500 | GPa | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Glass Transition Temperature(Tg) | 378.2 | K | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Density(ρ) | 1.180 | kg/m³ | — |