Types of Dental Calculus
1. Crystalline forms of Tartar. As the calculation of age on the surface of the tooth, inorganic component changes through several different crystalline forms. It is interesting to note that some of these crystalline forms of the terms very similar to crystal form in the tooth itself.
a. Newly formed calculus deposits appear as crystalline form called brushite.
B. In calculus deposits, which are a bit more Mature, but less than 6 months, in crystalline form in the first place octocalcium phosphate.
c. In Mature fields, which are more than 6 months, in crystalline form in the first place hydroxyapatite.
2. Location of the calculus deposits
a. The above gum calculus calculus deposits deposits located coronal (above) the gingival margin. Other terms used to refer to deposits coronal to the gingival margin are supramarginal calculation and salivary calculi.
1) although supragingival calculus deposits can be found on any of the tooth surface, they are usually in limited areas of the dentition, such as the lingual surfaces of the front teeth of the lower jaw, the front surface of the maxillary molars, and on the teeth, who gathered or malocclusion.
It is interesting to note that supragingival calculus often found in areas adjacent to major salivary ducts (for example the lingual surfaces of the front teeth of the lower jaw and face maxillary chewing teeth).
2) although of supragingival plaque and stones can form in any form, these deposits are often irregular, large deposits.
B. Subgingival calculus deposits deposits located apical (see below) the gingival margin. Other terms that were used for deposits to the apical gingival are beyond calculation and serum calculus.
1) distribution of subgingival deposits can be located in separate areas, or generalized around the mouth.
2) the Form of subgingival deposits most often flattened. It is believed that the form of a Deposit can be guided pressure pocket wall of the Deposit.