@@jannalam6861that’s the catch to collect more money. Whereas porcelain’s shade is permanent. It may have coffee stains and the likes but can be polished easily.
A cautionary tale......I had a double implant and it took 18 months till the procedure was complete. I had 4 major small operations. 2 for scraping the bone ( this is something you don't want! ) A gum operation which required 2 separate visits. There were 3 more normal dentist appointments. It ended up costing about $7500 US. In the end I am OK but I am once bitten twice shy.