In the past few years, a white, shiny, and durable ceramic material known as zirconia has experienced a rise in its use as an orthopedic biomaterial for dental reconstruction. This material is highlyresistant to wear and tear, making it much more resilient than porcelain, which was conventionally used for crowns and bridges – and, more importantly, human tissue is receptive of it.
The hardness and sturdiness of zirconia restorations make them difficult to produce in many dental laboratories. For this reason, many of these labs have shifted towards utilizing computer-aided milling (CAM) systems for fabrication purposes.
Turning a block of zirconia into a dental restoration is made simpler with computer-aided machinery (CAM). The method is somewhat similar to a lathe; the block of zirconia is securely mounted and spun while a specialised tool carves away the excess material from its surface.
CAM systems possess an impressive level of precision unmatched by lathes or any manual attempts. This allows for the creation of complex patterns that may otherwise be impossible. Furthermore, zirconia restorations milled by these CAM systems take on a high degree of luminosity and translucency once glazed and polished, providing a breathtakingly realistic finish which nearly mimics the beauty of natural teeth.
To create a custom zirconia restoration, CAM technology is utilized, which begins with the digital generation of a model using CAD/CAM software. This model serves as an instruction guide for the CAM system to produce a toolpath for the milling machine.
A set of instructions, the toolpath, helps to steer the milling machine’s cutting tool along the surface of the zirconia block. To finalize this path, a CAM system works to complete the translation and send its commands to the machine to guide it in the correct motion.
Several hours may be spent anxiously waiting as the milling machine works on the restoration’s size and intricacies; when the work is finished, removal occurs, followed by refining any of the project’s coarse edges.
Once all the necessary preparatory steps have been completed, the restoration can be ready to be glazed and rendered perfect. This is done by immersing the restoration in an amalgamation of a cerulean liquid and then firing it off in a furnace. By the end of this, the restoration achieves its ultimate color and appears luminescent.
Consummating the process is the polishing stage, usually undertaken with manual tools. With diamond-attuned gadgets, the refurbishment is attended to until it is glossy and takes on an ethereal luminosity.
Zirconia restorations crafted through CAM milling are the ideal choice for individuals longing for strength, esthetics, and resilience. These durable restorations lend a natural look that can last for many years.
Post time: 2023-06-15