Arroyo Grande, California. For the California wine region, see Arroyo Grande Valley AVA. Arroyo Grande is a city in San Luis Obispo County, California, United States. The population was 17,716 at the 2013 census.
1 Tooth-colored resin fillings usually cost between $90 and $250 for one to two teeth, and between $150 and $450 for three or more.  Porcelain or cast-gold fillings are the most expensive option. They can cost anywhere from $250 to $4,500, depending on the size of the cavity.
2 â Composite fillings are more expensive than amalgam fillings. At my dental school, we charge $88 for a large amalgam filling in a back tooth and $135 for a large composite filling in a back tooth. Our prices are usually about 50-70% the cost of private practice fees. If youâre on a tight budget, amalgam may be your best choice.