Ameloblastoma a locally invasive odontogenic tumour arising from the remnants of the dental lamina
and dental organ or odontogenic epithelium.
It is a benign, uni or multicystic intraosseous tumor, which originates from the dental lamina
and its remnants, with a characteristic lining of Parakeratinized layered squamous epithelium.
The enamel is produced by ameloblasts (Figure 2D) originated from the inner epithelium of the enamel organ, which is originated from the dental lamina
The cells in the alligator's dental lamina
behaved like we would expect stem cells to behave.
USC researchers identified three developmental phases for each alligator tooth unit, comprising a functional tooth (f), replacement tooth (r) and dental lamina
7,8 Another theory, well supported in the literature, is the hyperactivity theory, which suggests that supernumeraries are formed as a result of local, independent, conditioned hyperactivity of the dental lamina
An odontogenic cyst is formed by activation of odontogenic cell rests entrapped within the bone tissue or gingival tissue of the jaws, such as the epithelial remains of Malassez, the dental lamina
(cell rests of Serres), or the enamel organ.
Dental fusion, also called Sinodonty, is a dental anomaly which is the union of two tooth germs, which may happen in any of this-god of odontogenesis from the dental lamina
Ameloblastomas arise from residual epithelial elements of tooth development: dental lamina
, enamel organ, lining of odontogenic cysts or the basal cells of the oral mucosa.
As the jaws lengthen the dental lamina
grows posteriorly from the distal aspect of the second deciduous molar germ as a solid cord of epithelium, not connected with the surface.
In these cases, agenesis was one of the manifestations of an anomaly of the dental lamina
, specifically mild dysplasia.
At the initiation stage, around the sixth week of human development, the oral ectoderm gives rise to the oral epithelium, and then to the dental lamina
adjacent to the deeper mesenchyme separated by a basement membrane.
Odontogenic keratocyst are odontogenic cyst of epithelial origin first identified in 1876 derived from the remnants of the dental lamina
Controversies Regarding Histogenesis: The source of origin of lateral periodontal cysts remains controversial, with extensive debate in the literature over whether the lesion derives from the dental lamina
, reduced enamel epithelium, or rests of Malassez.
They include heredity, abnormal displacement of the dental lamina
in the embryonic life, axial inclination of erupting canines, retention or premature loss of deciduous canine, inadequate eruption space, supernumerary teeth, excessive length of crown, endocrine disorders, trauma, diet and intrauterine defects.