Mollusks possess sturdy protective shells, thanks to their internal nacre structure. Nacre, the natural nanocomposite, ...

Ceramic Crowns: Similar to porcelain, ceramic crowns are highly aesthetic and suitable for people with metal allergies. Metal Crowns: Made from gold or other alloys, metal crowns are extremely ...

Metal crowns are extremely durable, resisting deterioration and withstanding chewing and tooth biting. All-porcelain crowns ...