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  2. Cementoenamel junction - Wikipedia

    en.wikipedia.org/wiki/Cementoenamel_junction

    This irregular fragmentation of Hertwig's epithelial root sheath yields an equally irregular limit of cervical enamel and an irregular onset of formation and deposition of cementum. Consequently, the relationship between cementum and enamel at the CEJ presents an irregular contour, as observed during scanning electron microscope (SEM) analysis ...

  3. Non-carious cervical lesions - Wikipedia

    en.wikipedia.org/wiki/Non-carious_cervical_lesions

    Non-carious cervical lesions on an incisor belonging to Australopithecus africanus. Arrows show the location of the lesions. Non-carious cervical lesions (NCCLs) are a group of lesions that are characterised by a loss of hard dental tissue at the cementoenamel junction (CEJ) region at the neck of the tooth, without the action of microorganisms or inflammatory processes. [1]

  4. Dental abrasion - Wikipedia

    en.wikipedia.org/wiki/Dental_abrasion

    For successful treatment of abrasion, the cause first needs to be identified and ceased (e.g. overzealous brushing). Once this has occurred, subsequent treatment may involve the changes in oral hygiene, application of fluoride to reduce sensitivity, or the placement of a restoration to help prevent further loss of tooth structure and aid plaque ...

  5. 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]

  6. Ameloblast - Wikipedia

    en.wikipedia.org/wiki/Ameloblast

    The secretory end of the ameloblast ends in a six-sided pyramid-like projection known as the Tomes' process. The angulation of the Tomes' process is significant in the orientation of enamel rods, the basic unit of tooth enamel. Distal terminal bars are junctional complexes that separate the Tomes' processes from ameloblast proper.

  7. Epithelial root sheath - Wikipedia

    en.wikipedia.org/wiki/Epithelial_root_sheath

    The sheath is also responsible for multiple or accessory roots (medial growth) and lateral or accessory canals in the root (break in epithelium). [3] It is controversial, but HERS may be involved in cementogenesis and the secreting of cementum, or that HERS-derived products might be related to enamel-related molecules, and that these proteins might initiate acellular cementum formation.

  8. Striae of Retzius - Wikipedia

    en.wikipedia.org/wiki/Striae_of_Retzius

    They bend obliquely near the cervical region. They curve occlusally near the cuspal regions or the incisal regions. Produced during the second stage of enamel calcification, also known as the maturation stage, ameloblasts produce matrix and enamel at the rate of 4 micrometers per day; however every fourth day there is a change in development ...

  9. Tooth wear - Wikipedia

    en.wikipedia.org/wiki/Tooth_wear

    Abfraction is a form of noncerious cervical lesion, where there is a loss of tooth substance at the cervical margins, purportedly caused by minute flexure of teeth under occlusal loading. This occlusal loading is one factor that interacts with chemical, biological,and behavioral factors in which result in this abfraction.

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