Titanium Alloys For Stronger, Better-Fitting Dental Implants
Titanium Alloys For Stronger, Better-Fitting Dental Implants
Dental implants have been made of strong and long-lasting titanium for decades, but a new generation of titanium alloys are now set to improve restorative dentistry even further. To put this into context, pure titanium implants have a 97.7% success rate, while those made from titanium-zirconium alloys do even better, with an impressive success rate of nearly 99%, a recent clinical study found. These numbers show just how durable titanium alloys can be. They’re made by combining titanium with other elements, like zirconium or niobium, which results in a strong mix of metals. This is helpful for dentists who need to make implants for tricky jaw shapes. What’s more, many of these alloy implants also often have surface modifications that help them bond with the jawbone faster. This means patients get custom-fitted implants that match their jaw perfectly, and recover more quickly.
Stronger implants for narrow jaws
Titanium alloys are extremely strong, which means implants made from these materials are much less likely to break when you bite or chew. For instance, a titanium-zirconium alloy with 13%-17% zirconium is around 40% stronger than regular titanium (which is already very strong!). This increased strength is particularly beneficial for narrow-diameter implants, which are usually used for people who don’t have enough bone to support a standard implant. This can be the case for those with naturally narrow jaws, or those who’ve lost bone due to tooth loss or gum disease. Because narrow-diameter implants are thinner and more susceptible to bends or fractures, titanium alloys’ added strength can make a big difference in terms of durability.
Custom implant designs
Dentists also now have a lot more flexibility to create custom implants in different shapes and sizes, thanks to titanium alloys. This is ideal for patients with more unusal jaw shapes, as their implants can be tailor-made for a perfect fit. While titanium alone is still fine for most designs, the alloy version is stronger and, therefore, more suitable for complex cases. This is because these alloys can better withstand the extra stress that implants in uniquely-shaped jaws often tend to face. Take full-arch bridges, for example. These are single metal frameworks that replace all the teeth in either the upper or lower jaw, and they’re subject to a lot of bite force along the entire length, no matter the jaw shape. Thanks to titanium alloys, dentists can accurately create durable and complex designs, so they fit each patient comfortably and remain strong over time.
But pure titanium still has a role to play, even when the implants themselves are made of alloys. Titanium wire is often used to create thin metal bars that connect the implant to the framework, which is essentially the metal backbone that supports the replacement teeth. These bars help keep everything permanently in place. Titanium wire is strong and flexible, and implants or frameworks made from titanium have a 99% success rate after ten years. In order to get the best results, dental professionals should buy titanium wire that’s the right medical grade. This means the implants will be biocompatible with the patient’s gum tissue and continue to function well over time.
Surface modifications for better osseointegration
New titanium alloys also often have surface modifications that improve how well the implants integrate with the body. This helps the implants heal faster and with a shorter recovery period that lets patients resume their usual activities faster. Surface modifications are especially valuable for tricky cases, like narrow jaws or areas with thin bone, where it’s harder for the implant and bone to bond properly. Micro-rough surfaces are a good example here. These have a rough texture that’s achieved through a process called sandblasting and acid etching, which creates super-tiny pits on the implant’s surface. This increases the surface area of the implant, and, therefore, makes it easier for bone cells to attach and grow around it. The end result is a stronger bond between the implant and jawbone, along with a faster recovery time.
Next-generation titanium alloys are set to shape the future of dental restorations. Thanks to these impressive materials, patients can look forward to strong and reliable implants that fit their jaws perfectly.
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