Tusks, the extra-oral teeth.

  title={Tusks, the extra-oral teeth.},
  author={Nasoori Alireza},
  journal={Archives of oral biology},
  • Nasoori Alireza
  • Published 9 July 2020
  • Medicine, Biology
  • Archives of oral biology


Current Perspectives on Tooth Implantation, Attachment, and Replacement in Amniota
The diversity of tooth attachment, implantation and replacement in extant and extinct amniotes is evaluated in order to derive hypothetical evolutionary trends in these different dental traits over time and synthetic definitions or redefinitions of most commonly used terms are proposed.
Vestigial Tooth Anatomy and Tusk Nomenclature for Monodon Monoceros
The conclusions reached are that the narwhal tusks are the expression of canine teeth and that vestigial teeth have no apparent functional characteristics and are following a pattern consistent with evolutionary obsolescence.
Morphology of the deciduous tusk (tush) of the African elephant (Loxodonta africana).
The tusk of the African elephant is preceded by a deciduous tooth generally known as the tush, which apparently has no function but provides the anlage and orientation for the development of its permanent successor.
Synthetic Hydroxyapatite as a Biomimetic Oral Care Agent.
Synthetic hydroxyapatite is a promising biomimetic oral care ingredient that may extend the scope of preventive dentistry, due to its biocompatibility and similarity to biologically formed hydroxyAPatite in natural tooth enamel.
Xerostomia and Hyposalivation
Salivary gland hypofunction has been selected as the overarching term for subjective symptoms and objective signs of dry mouth and its different aspects-xerostomia, hyposalivation, and altered saliva composition-are reviewed with respect to prevalence, diagnosis, and etiology.
Histogenesis of the chequered pattern of ivory of the African elephant (Loxodonta africana).
Investigations showed that the distinctive pattern of elephant ivory was the result of the sinusoidal, centripetal course followed by dentinal tubules, and it was suggested that this leads to cell crowding, increased pressure between odontoblasts and subsequent apical movement of their cell bodies, cell degeneration and fusion.
Measuring Rabbit (Oryctolagus cuniculus) Tooth Growth and Eruption by Fluorescence Markers and Bur Marks
It is concluded that the application of fluorochrome staining can be used to measure tooth growth in teeth that are not accessible for bur marks or in animals that are too small to assess tooth eruption or growth by bur marks.
The three-dimensional arrangement of the mineralized collagen fibers in elephant ivory and its relation to mechanical and optical properties.
It is shown that ivory has a graded structure with varying MCF orientations and that MCF of the mid-dentin are arranged in plywood like layers with fiber orientations oscillating in a narrow angular range around the tusk axis.
The ins and outs of the evolutionary origin of teeth
It has been shown that teeth develop from dermal, endodermal or mixed epithelia and, therefore, developmental distinctions between teeth and dermal denticles are diminished, and the “inside‐out” hypothesis must be rejected.
Tooth length and incisal wear and growth in guinea pigs (Cavia porcellus) fed diets of different abrasiveness.
The findings suggest that other factors than diet abrasiveness, such as mineral imbalances and in particular hereditary malocclusion, are more likely causes for dental problems observed in this species.