Louis C., French physiologist, 1842-1910. See: Malassezia, Malassez epithelial rests.
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Respecto de la etiopatiogenia de los quistes periapicales se ha propuesto que estos se forman a partir de la estimulacion de los restos epiteliales de Malassez en el ligamento periodontal, provenientes de la degradacion de la vaina de Hertwig durante la odontogenesis, mediante los mecanismos y productos involucrados en la inflamacion periapical (Nair; Lin et al., 2007; Carrillo et al.).
Asi, ciertos tejidos orales postnatales podrian emplearse como fuente de celulas epiteliales, entre los que incluye celulas madre progenitoras del epitelio oral (OESCs); los restos epiteliales de Malassez (ERM) presentes en el ligamento periodontal (PDL) en la vaina epitelial radicular de Hertwig cerca de los extremos de una raiz en formacion; en el epitelio reducido del esmalte (REE) que cubre el esmalte durante la erupcion dental; el epitelio de union (JE) a nivel del cuello dentario; la lamina dental activa (DL) que se encuentra en el area retromolar a los 5 o 6 anos; los restos de la lamina dental del cordon gubernacular (GC), presentes por encima de los dientes en erupcion (9).
These cysts are seen most frequently in the jaws as odontogenic epithelial rests and have a very close association with the jaw bones.1 In jaws, postodontogenesis proliferation of the epithelial cells of Malassez, the reduced enamel epithelium and cell rests of Serres can give rise to odontogenic cysts.
Bhaskar connected the higher frequency of maxillary radicular cysts with the epithelial rests of Malassez, which seem to be more numerous in the maxilla than in the mandible [17].
THECs were performed using a Malassez hemocytometer after a 1:200 dilution with an eosinophil dilution liquid containing phloxine B.
These cysts have an epithelial lining that derives from the tooth-forming organ epithelia: the so-called glands of Serres (rests of the dental lamina), the rests of Malassez (rests of the root sheath of Hertwig), and the reduced enamel epithelium (remnants of the enamel organ after dental crown formation).
In the case of molars, in advanced developmental stages the apical loop leaves the external and internal epithelium, the so-called Hertwig epithelial root sheath, which is a structure necessary for the root to achieve the appropriate length; it is later divided and replaced by cementoblast precursors, called epithelial cell rests of Malassez [37].
Their presence in odontogenic cysts and tumors has been related to their derivation from the remnants of the dental lamina and rest of Malassez which are known to have glycogen-rich clear cells as a typical feature [3, 8].
We proceeded to count the total number of spores using a Malassez cell.