👉 The term "opal" is a medical term that refers to a type of stone found in the mouth. It includes both natural and artificial stones, which are used for various dental purposes such as filling cavities or as a cosmetic tooth color. In the context of medicine, it's important to note that opal is not a real gemstone but rather a type of mineral from the rhodolite family that has been used in traditional Chinese medicine for centuries. The term "opal" can also