The most significant drawbacks of zirconia-based materials are related to their mechanical properties. One concern is the potential friction against the tooth root and wearing down of opposing teeth. However, regular check-ups can help minimize the risk of damaging opposing teeth.
Another drawback is the transformation of tetragonal zirconia to monoclinic zirconia under external stresses such as sandblasting, grinding, and thermal aging. This transformation is accompanied by a volume expansion that induces compressive stresses, which can prevent the propagation of cracks. Despite this unique characteristic, it is important to be aware of the potential for transformation and its effects on the material's performance.
In terms of cost, zirconia crowns tend to be more expensive than metal-ceramic crowns. However, they offer advantages such as being stronger and lighter. Zirconia is also compatible with humans and does not cause allergic reactions, making it suitable for use in dental crowns. Its homogeneous color and absence of metal further enhance its suitability for dental restorations.
Zirconia-supported restorations present challenges for ceramists due to the material's insulating properties during the firing and cooling processes. To ensure tension-free cooling, a slow cooling protocol is recommended for these types of restorations.
In summary, the drawbacks of zirconia-based materials primarily revolve around concerns about friction and wear, the potential transformation of the material, and the challenges faced during the fabrication process. However, these drawbacks are minimal compared to the many advantages offered by zirconia, such as its high thermal resistance, low thermal conductivity, chemical stability, and excellent biocompatibility and mechanical properties.
Looking for a dental ceramic that combines strength, biocompatibility, and durability? Look no further than KINTEK's range of zirconia-based materials! Despite its higher cost and potential for wear on opposing teeth, zirconia is the top choice for posterior prostheses. With excellent mechanical properties and no risk of allergic reactions, it's the superior option for your patients' dental needs. Contact us today to learn more about our high-performance zirconia materials and elevate your dental practice to the next level!
