sometimes called tartar.
Dental calculus is a hardened deposit of dental
plaque found on your teeth and under your gums. This is also one of the pre-disposing
factors for gingival inflammation. Calculus forms on natural teeth surface and dental
prosthesis. Presence of plaque is necessary for the formation of calculus.
Generally, it can only be removed with special instruments by a dentist or dental
Gum disease (periodontal disease):
Tooth (dental) erosion: