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2. Boulangerite - Wikipedia

   en.wikipedia.org/wiki/Boulangerite

   It is a really heavy, though soft mineral, which is easily breakable, though it cannot be scratched by using fingernails due to the same hardness (2.5–3). The mineral being heavy although being soft is due to its compact mass. The cleavage is generally good. In case of the fibrous type, the fibers are flexible. It is an opaque mineral.

3. Kaolinite - Wikipedia

   en.wikipedia.org/wiki/Kaolinite

   Kaolinite (/ ˈ k eɪ. ə l ə ˌ n aɪ t,-l ɪ-/ KAY-ə-lə-nyte, -⁠lih-; also called kaolin) [5] [6] [7] is a clay mineral, with the chemical composition Al 2 Si 2 O 5 4.It is a layered silicate mineral, with one tetrahedral sheet of silica (SiO 4) linked through oxygen atoms to one octahedral sheet of alumina (AlO 6).

4. Remineralisation of teeth - Wikipedia

   en.wikipedia.org/wiki/Remineralisation_of_teeth

   P11-4 is a self-assembling β-peptide. It builds a 3-D bio-matrix with binding sites for Calcium-ions serving as nucleation point for hydroxyapatite (tooth mineral) formation. The high affinity to tooth mineral is based on matching distances of Ca-ion binding sites on P11-4 and Ca spacing in the crystal lattice of hydroxyapatite.

5. Mineralized tissues - Wikipedia

   en.wikipedia.org/wiki/Mineralized_tissues

   Mineralized tissues are biological tissues that incorporate minerals into soft matrices. Typically these tissues form a protective shield or structural support. [ 1 ] Bone, mollusc shells , deep sea sponge Euplectella species, radiolarians , diatoms , antler bone, tendon , cartilage , tooth enamel and dentin are some examples of mineralized ...

6. Tooth decay - Wikipedia

   en.wikipedia.org/wiki/Tooth_decay

   Amelogenesis imperfecta, which occurs in between 1 in 718 and 1 in 14,000 individuals, is a disease in which the enamel does not fully form or forms in insufficient amounts and can fall off a tooth. [42] In both cases, teeth may be left more vulnerable to decay because the enamel is not able to protect the tooth. [43]

7. Tooth enamel - Wikipedia

   en.wikipedia.org/wiki/Tooth_enamel

   Due to the unique structure of enamel, the mechanical properties are very interesting. Enamel is the hardest material in the body and is one of the most durable load-bearing biological materials. It has been shown to have a fracture toughness three times greater than that of geological hydroxyapatite, the main mineral in enamel. [65]