Many people experience severe dental issues, often linked to poor dietary habits. When teeth are damaged, people should seek alternatives to replace their natural teeth. Especially when choosing porcelain veneers, it's important to understand the available types. So, how many kinds of non-precious metal porcelain veneers exist? Below, we invite an expert to explain.
1. Nickel-Chromium Alloy Porcelain-Fused-to-Metal Crowns: Using this metal as the base has poor biocompatibility, causing allergic reactions in some individuals. The slow release of nickel and beryllium elements can lead to gum discoloration and oral toxicity, affecting human health. They are typically banned in developed countries.
2. Cobalt-Chromium Alloy Porcelain-Fused-to-Metal Crowns: These offer decent physical properties. Since they contain no nickel, their biocompatibility is significantly improved, and the likelihood of causing gum discoloration is reduced. The cobalt-chromium alloy from Germany's BEGO company is considered the most ideal. For patients with less stringent requirements, the restorative results are still acceptable.
3. Pure Titanium Porcelain-Fused-to-Metal Crowns: Titanium exhibits no allergenic, carcinogenic, or teratogenic effects when in contact with the human body. It integrates well with bone tissue, epithelium, and connective tissue, making it the most biocompatible metallic material.
4. Modern medical research confirms nickel's allergenic and carcinogenic properties. This can cause mild gum inflammation in some individuals, leading to slight redness and swelling where the crown meets the gumline. This compromises gum health, affects aesthetics, and indicates poor biocompatibility.
5. Cobalt-chromium alloy porcelain-fused-to-metal crowns exhibit superior biocompatibility and restorative outcomes. They are less likely to cause allergies, offer corrosion resistance, and significantly reduce the risk of black line formation at the gum line compared to nickel-chromium alloys. However, a very small number of individuals may still experience this issue. Pure titanium porcelain-fused-to-metal crowns demonstrate good biocompatibility but are prone to porcelain chipping.
Through the above explanation of dental crown types, we should all actively seek understanding. We also hope patients will thoroughly research their options, clearly distinguish between types, and proactively choose the most suitable one for themselves.