Oxytalan
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Oxytalan fibers are elastic-like fibers that run parallel to the tooth surface and bend to attach to cementum. Fibrillin builds the oxytalan fibers, which causes the elastic behavior.[1]
In the cellular anatomy of teeth, oxytalan fibres are a component of the extracellular matrix. They were first described by Fullmer & Lillie (1958) in periodontal membranes. On light microscope examination, these fibres may be distinguished from mature elastic fibers by their failure to stain with aldehyde fuchsin solutions, unless they have been oxidized by potassium permanganate, performic acid or peracetic acid.
Under electron microscopy they appear to be composed of microfibrillar units, 7–20 nm in diameter with a periodicity of 12–17 nm.
From their morphology, localization and staining properties it seems likely that these fibers are an immature form of elastic tissue.
They can be found on the surface of smooth muscles. They are largely associated with blood vessels.
The fibers' resistance to formic acid breakdown gave rise to the term "oxytalan".[2] Elaunin, oxytalan, and elastic are the three different forms of elastic fibers. The thinnest, or oxytalan fibers, are perpendicular to the dermoepidermal junction and are the most superficial. In this work, electron microscopy was used to study these oxytalan fibers of human skin. They noticed that they appear to be related to bundles of fibers in a parallel pattern. 10 to 12 nm is the diameter of each. The elastic system's function in maintaining the architecture of the skin, especially at the dermoepidermal junction, is another important element to take into account. The acknowledgement of the existence of the adhesion between the basement lamina and the oxytalan fibers that Kobayasi described is supported by their observations. The fact that these structures resemble the fibrillar component of elastic fibers must be emphasized.[3]
The oxytalan system's histological appearance is distinguished by fiber ramifications and anastomoses.[4]
The periodontal membranes of all human teeth, as well as those of monkeys, rats, guinea pigs, and mice, contain oxytalan fibers.[5][6]
It is also mentioned that a portion of oxytalan fibers support the lymphatic and blood vessels that lead to the teeth .In periodontal membranes of teeth under higher stress, as those used as bridge abutments, there is an increase in both the quantity and size of oxytalan fibers.[6]