A cementoblast is a biological cell that forms from the follicular cells around the root of a tooth, and whose biological function is cementogenesis, which is the formation of cementum.

What is the origin of Cementoblast?

Cementoblasts are of mesenchymal origin in the tooth germ. As with bone, cementogenesis starts with the deposition of an irregular collagenous matrix with an interfibrillar matrix, termed cementoid.

What does a Cementocyte do?

Like osteocytes in bone, cementocytes are reactive cells and can secrete cementum to help keep the tooth stable within the socket (Junqueira and Carneiro, 2003).

What is Cementoclast?

A multinucleated giant cell similar to an osteoclast that destroys cementum.

Which cell is responsible for cementogenesis?

Key cells in root formation are Hertwig's epithelial root sheath (HERS) cells. They appear to be involved in the initiation of the process, in root elongation, and in stimulating both cementogenesis and root dentinogenesis [28].

What is CEMENTOBLAST? What does CEMENTOBLAST mean? CEMENTOBLAST meaning & explanation

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Where is the CEJ located?

Cementoenamel Junction (CEJ)

The cementoenamel junction is the specific line around the tooth's perimeter, where the enamel covering the crown of the tooth meets the cementum protecting the root.

Where are Ameloblasts located?

Ameloblasts are cells present only during tooth development that deposit tooth enamel, which is the hard outermost layer of the tooth forming the surface of the crown.

What is cause Hypercementosis?

Hypercementosis is excessive deposition of cementum on the tooth roots. In most cases, its cause is unknown. Occasionally, it appears on a supraerupted tooth after the loss of an opposing tooth. Another cause of hypercementosis is inflammation, usually resulting from rarefying or sclerosing osteitis.

What is bundle bone?

Bundle bone is a histologic term for the portion of the bone of the alveolar process that surrounds teeth and into which the collagen fibers of the periodontal ligament are embedded. It can also be referred to as alveolar bone proper.

What is Sharpey's Fibres?

Sharpey's fibres (bone fibres, or perforating fibres) are a matrix of connective tissue consisting of bundles of strong predominantly type I collagen fibres connecting periosteum to bone. ... In the spine, similar fibres join the intervertebral disc to the adjacent vertebrae.

What is dentine?

dentin, also spelled dentine, in anatomy, the yellowish tissue that makes up the bulk of all teeth. It is harder than bone but softer than enamel and consists mainly of apatite crystals of calcium and phosphate.

What is the dentine of a tooth?

Dentin. That part of the tooth that is beneath enamel and cementum. It contains microscopic tubules (small hollow tubes or canals). When dentin loses its protective covering (enamel), the tubules allow heat and cold or acidic or sticky foods to stimulate the nerves and cells inside the tooth, causing sensitivity.

Is cementum harder than bone?

The cementum contains the periodontal ligament that attaches the tooth to the bone. The hard but porous tissue located under both the enamel and cementum of the tooth. Dentin is harder than bone. The tough, shiny, white outer surface of the tooth that is visible.

Is dentin vascular or avascular?

In contrast with bone, dentin is not vascularized, except in some fish teeth where the existence of vasodentin is well-documented [4].

What does the dental sac form?

The dental follicle, also known as dental sac, is made up of mesenchymal cells and fibres surrounding the enamel organ and dental papilla of a developing tooth. It is a vascular fibrous sac containing the developing tooth and its odontogenic organ. The dental follicle (DF) differentiates into the periodontal ligament.

What is Interglobular dentin?

Interglobular dentine (IGD) is an area of poorly mineralized dentine matrix. It has been reported that there is an association between the retraction of odontoblast processes (OP) and the formation of IGD. A variation of the extent of OP has been described depending on the region of the tooth and age.

What is interdental septum?

This is a cross section through the roots of two adjacent teeth, labelled 1 and 2. The alveolar bone between tooth sockets is referred to as the interdental septum (A). Note the radial arrangement of the principal fibers extending between the tooth socket and the root (B).

Is lamina dura bundle bone?

Lamina dura is compact bone that lies adjacent to the periodontal ligament, in the tooth socket. The lamina dura surrounds the tooth socket and provides the attachment surface with which the Sharpey's fibers of the periodontal ligament perforate.

Is bundle bone immature?

immature bone containing thick bundles of collagen fibers arranged nearly parallel to one another with osteocytes in between; a similar type of bone is found in regions penetrated by fibers of Sharpey, as at ligament and tendon attachments.

What does Hypercementosis look like?

Teeth affected by hypercementosis may also appear to be chipped, because cementum forms misshapen and jagged deposits can form on the tooth's apex. The deposits may appear as small white ridges along the top of the teeth, and they damage your smile.

Does Hypercementosis cause pain?

Signs and symptoms

It is experienced as an uncomfortable sensation in the tooth, followed by an aching pain. It may be noted on radiographs as a radiopaque (or lighter) mass at each root apex.

What is the second tooth in Hypodontia?

It rarely occurs in primary teeth (also known as deciduous, milk, first and baby teeth) and the most commonly affected are the adult second premolars and the upper lateral incisors.

What do Odontoblasts produce?

Odontoblasts are specialized cells that produce dentin and exhibit unique morphological characteristics; i.e., they extend cytoplasmic processes into dentinal tubules.

What is Turner's hypoplasia?

Turner's hypoplasia is an teeth abnormality that affect appearance of the teeth. Hypoplasia is quantitative defect of enamel and it is histomorphologically explained as an external defect involving the surface of the enamel and associated with reduced thickness of enamel.