Generally speaking, it means about ten years, depending on how you use it. Good may take several years, and bad may take several years. When it breaks down, take it down and do it again. Even after tooth extraction, you can do dental implants. Usually pay attention to porcelain teeth, don't eat hard things, such as fried peanuts, don't be hot and cold. Don't worry now, oral technology is progressing rapidly, and no one can say what new progress and new technology will be in ten years, so don't worry.