"Synthetic fillers" refers to man-made substances that are used to bulk up or add volume to a product or material.
Sentences with «synthetic fillers»
Our products are free of synthetic fillers and synthetic ingredients. (beneathyourmask.com)
The risks for synthetic fillers are about the same as natural fillers, but the only difference is that synthetic problems are harder to correct, due to the longevity of the filling. (thefashionablehousewife.com)
But what if instead of drilling holes into teeth and patching them up with synthetic fillers, dentists could coax our pearly whites to regrow themselves? (scientificamerican.com)