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  2. Amelogenesis imperfecta - Wikipedia

    en.wikipedia.org/wiki/Amelogenesis_imperfecta

    Enamel appears to be comparable to dentine in its radiodensity on radiographs. Type 3 - Hypocalcified Enamel defect due to malfunction of enamel calcification, therefore enamel is of normal thickness but is extremely brittle, with an opaque/chalky presentation. Teeth are prone to staining and rapid wear, exposing dentine.

  3. Molar incisor hypomineralisation - Wikipedia

    en.wikipedia.org/wiki/Molar_Incisor_Hypominerali...

    Molar incisor hypomineralisation (MIH) is a type of enamel defect affecting, as the name suggests, the first molars and incisors in the permanent dentition. [1] MIH is considered a worldwide problem with a global prevalence of 12.9% and is usually identified in children under 10 years old. [2]

  4. Dentinogenesis imperfecta - Wikipedia

    en.wikipedia.org/wiki/Dentinogenesis_imperfecta

    Discoloured teeth - teeth may be amber, brown, blue or opalescent; Bulbous shape to the tooth crown due to cervical constriction; Tooth wear/Non-carious tooth surface loss (NCTSL) - due to the poorly mineralised dentine, the enamel of the tooth is unsupported and subsequently shears or chips off as it is subjected to biting forces. This exposes ...

  5. Human tooth development - Wikipedia

    en.wikipedia.org/wiki/Human_tooth_development

    This mineralized phase occurs very early around the 3rd or 4th month of pregnancy. This marks the first appearance of enamel in the body. Ameloblasts make enamel at the location of where the cusps of the teeth are located. Enamel grows outwards, away from the center of the tooth. [citation needed]

  6. Ectodermal dysplasia - Wikipedia

    en.wikipedia.org/wiki/Ectodermal_dysplasia

    The development of tooth buds frequently results in congenitally absent teeth (in many cases a lack of a permanent set) or in the growth of teeth that are peg-shaped or pointed. The enamel may also be defective. Cosmetic dental treatment is almost always necessary and children may need dentures as early as two years of age.

  7. Dental fluorosis - Wikipedia

    en.wikipedia.org/wiki/Dental_fluorosis

    The white opaque areas in the enamel of the teeth are more extensive but do involve as much as 50% of the tooth. Moderate: 4: All enamel surfaces of the teeth are affected and surfaces subject to attrition show wear. Brown stain is frequently a disfiguring feature Severe: 5: All enamel surfaces are affected and hypoplasia is so marked that the ...

  8. Musk's SpaceX preparing to launch tender offer in Dec at $135 ...

    www.aol.com/news/musks-spacex-preparing-launch...

    By Krystal Hu and Kenrick Cai (Reuters) -Elon Musk's SpaceX is preparing to launch a tender offer in December to sell existing shares at a price of $135 per share, two sources familiar with the ...

  9. Dental lamina - Wikipedia

    en.wikipedia.org/wiki/Dental_lamina

    The dental lamina is a band of epithelial tissue seen in histologic sections of a developing tooth. [1] [2] The dental lamina is first evidence of tooth development and begins (in humans) at the sixth week in utero or three weeks after the rupture of the buccopharyngeal membrane. It is formed when cells of the oral ectoderm proliferate faster ...