At our office, we want all of our dental work to be beautiful, functional and enduring. Many times, finding the intersection point of these three qualities requires us to turn to new technologies and developments in dental materials. In the case of dental crowns, we utilize BruxZir milled zirconia as a beautiful restorative solution that stands up to even the toughest conditions.
In the human mouth, the farther back a tooth is, the more relative force it will receive during a regular day. Teeth closest to the jaw joint are situated right next to the masseter, the muscle responsible for chewing, biting and closing the mouth. This muscle can generate incredible amounts of force, enough to crack or fracture your own teeth. Because of this, many types of crowns will chip, break or fail in the rear of the mouth.
A diagram highlighting the masseter muscle.
In the past, porcelain fused to metal (PFM) crowns were the best tooth colored solution for posterior teeth, as their solid metal underpinnings are incredibly durable. However, the baked on porcelain can fracture and break during normal wear, requiring replacement or adjustment. Gold crowns were popular as well, so long as the patient was comfortable without a tooth colored restoration. Other materials, such as full porcelain crowns, are simply too fragile to be placed in such a functional position.
In contrast, Bruxzir crowns combine longevity, strength and natural beauty. They are milled out of a solid piece of engineered zirconia to match the color and shape of the original tooth. Since it is a single piece of material, it better matches the light characteristics of natural teeth. There is no metal backbone block out and less tooth structure has to be removed to accommodate the newly made crown.
While some materials (such as Emax) offer better translucency and color properties, nothing can stand up to BruxZir’s durability. They are essential chip, grind and crack proof. Even with heavy grinders and clenchers, the single piece zirconia will not fail or erode. No other material can offer this level of endurance in an esthetic, tooth colored package.
Even taking a hammer to a BruxZir crown will not ruin it's structural integrity.
We typically only place BruxZir crowns on molars and more rearward teeth. While these units are esthetically superior to PFMs, they are not as cosmetically versatile as Emax crowns. In essence, their incredible strength comes with the price of poorer relative translucency. For front teeth experiencing less average force and wear, we will typically place this more esthetic material. Of course, we still place PFM and gold crowns, but most patients are eligible and more willing to be fitted with these state-of-the-art units.
If you have any further questions about BruxZir crowns, or any other crown materials at our office, please give us a call. We would love to talk you through your crown options, and which material would work best for you personally!