![]() ![]() Zirconia is probably the best-performing all-ceramic material in dentistry in terms of flexural strength. Zirconium Oxide: The champion when it comes to strength This means a material that offers high flexural strength and high fracture resistance allows very thinner restorations to be produced and is therefore well suited for minimally invasive treatment options. A high-strength material allows a low wall thickness. High flexural strength also benefits the thickness of the restoration walls. Minimally invasive treatment options with thin wall thicknesses.When high pressure/stress is exerted on the material or restoration, especially on bruxism patients, flexural strength determines which a material should be used. High flexural strength is essential for stress-bearing restorations such as posterior crowns.The more extensive the restoration is, the stronger the material should be. The more strength a material offers, the more units a restoration can include. Materials with high flexural strength offer advantages with these applications in particular: Current research is pushing towards an industry standard, but that has not been currently achieved. For the values to be comparable, they must be obtained using the same measuring method. However, the flexural strength determined during a test depends heavily on the measuring method used and the surface preparation of the test samples, for instance on whether a material is polished or ground.Ĭomparisons between different materials are therefore not always definitive and values measured with different measuring methods are not comparable. The higher the value, the more impacting forces the material can withstand. Flexural strength indicates how much force is required to break a test sample of a defined measurement diameter.Īs soon as this value is exceeded, the test specimen breaks. Note: Measuring methods vary!įrom a scientific point of view, flexural strength is the resistance of a material to breakage or fracture. With good reason: flexural strength is a key value when it comes to the durability of a material such as zirconium oxide. Every manufacturer of dental materials provides MPa values that indicate flexural strength. Megapascal is the mega unit used to measure the intensity of pressure or force per unit area that a material is able to withstand before breaking. It is expressed in the metric system as megapascals or MPa. Flexural strength: one of the key values when evaluating the durability of a materialįlexural strength is a term frequently used in the dental lab world.
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