There are two kinds of dentures that can be used to replace multiple teeth at once. Full dentures are probably the most well-known; they’re generally the most cost-effective option for replacing all of the teeth in an arch (or both arches) at once. Patients who still have plenty of healthy teeth should get partial dentures instead. This type of dental prosthetic is often compared to a puzzle piece, as it can be customized to fill in the empty spaces in your mouth wherever they might be located.