Is gingival col Keratinized

The interdental gingiva consists of a col-shaped part, bordered by a vestibular and palatal/lingual interdental papilla. The col is covered by a stratified non-keratinized epithelium (17, 30–32), whereas a stratified keratinized epithelium covers the interdental papillae (18).

Is gingival epithelium Keratinized?

Oral gingival epithelium is keratinized while the sulcular and junctional epithelia (JE) as well as the lining mucosa are not keratinized (14).

What part of gingiva is Keratinized?

The keratinized gingival is the part of the oral mucosa which covers the gingiva and hard palate. It extends from the free gingival margin to the mucogingival junction and consists of the free gingiva as well as the attached gingiva.

What is gingival col?

A valley-like depression which connects the gingival papillae situated in the interproximal space between two teeth. It lies below, and conforms to the shape of, the interproximal contact. It is covered by non-keratinized epithelium. The col is considered an important site for the initiation of chronic periodontitis.

Is gingiva attached non Keratinized?

Attached gingiva – This tissue is adjacent to the free gingiva and is keratinized and firmly attached to the bone structure. It can range from 3-12 mm in height.

Why gingiva is coral pink in color?

What color is the human gingiva? It is frequently described as “coral pink” and is dependent upon the thickness of epithelium, the degree of keratinization, the magnitude of pigmentation, and the underlying vascularization1.

Is masticatory mucosa Keratinized?

In different regions, the mucosa shows adaptation to differing mechanical demands: Masticatory mucosa consists of a stratified squamous keratinized epithelium tightly attached to the underlying tissues by a collagenous connective tissue, whereas lining mucosa comprises a nonkeratinized epithelium supported by a more …

Why gingiva is firm and resilient?

39. Consistency: The gingiva is firm & resilient with exception of the movable free margin, tightly bound to underlying bone.  The collagenous nature of lamina propria & its contiguity with mucoperiosteum of alveolar bone determines the firmness of attached gingiva.  Resilient is due to gingival fibers.

Is buccal mucosa Keratinized?

For example, the epithelium lining the floor of the mouth, the ventral side of the tongue, the buccal mucosa, and the soft palate is nonkeratinized; however, the epithelium associated with the gingiva and hard palate is usually keratinized.

What demarcates the free gingiva from the attached gingiva?

A shallow linear depression, the gingival groove, can be observed in some areas, distinguishing the free gingival margin from the attached gingiva.

Article first time published on

What is non Keratinized epithelium?

Nonkeratinized epithelium is a stratified squamous epithelium found in lips, buccal mucosa, alveolar mucosa, soft palate, the underside of the tongue, and floor of the mouth. Unlike keratinized epithelium, nonkeratinized epithelium is moist, and it contains living cells in the surface layer.

What is Keratinized tissue?

Keratinized tissue, also known as keratinized mucosa, refers to the band of tissue surrounding your teeth at the point where they meet the gums. The word “keratinized” is used to describe cells that produce large amounts of a protein called keratin, making them strong and better at forming barriers.

Why are some cells Keratinized?

The cells on the surface of stratified squamous keratinized epithelium are very flat. Not only are they flat, but they are no longer alive. They have no nucleus or organelles. They are filled with a protein called keratin, which is what makes our skin waterproof.

What is alveolar gingiva?

[jin-ji´vah, jin´jĭ-vah] (pl. gin´givae) (L.) the part of the oral mucosa covering the tooth-bearing border of the jaw; called also gum. … Called also alveolar gingiva. free gingiva the portion that surrounds the tooth and is not directly attached to the tooth surface.

What type of tissue is gingiva?

The gingiva is part of the masticatory mucosa that provides an internal defense mechanism against pathogens and mechanical stress. It is composed of a dense, vascular fibrous tissue with a keratinized stratified squamous epithelium.

Which papillae are Keratinized?

Usually, the fungiform papillae are located in the border of rostral apex of the tongue exhibiting the rounded form. They are covered by keratinized epithelial cells. In the fungiform papillae, several taste pores were observed on the surface.

Is tongue epithelium Keratinized?

This epithelium is keratinized. Specialized mucosa is located on the dorsum of the tongue, shows a keratinized epithelium and includes lingual papillae and taste buds as specialized structures (2).

Is the soft palate Keratinized?

The soft palate has a non-keratinized epithelium, with underlying minor salivary glands and striated muscle. The largest tonsils (the palatine tonsils) are embedded in the sides of the soft palate.

What cells are Keratinized and dead?

Keratin is an intracellular fibrous protein that gives hair, nails, and skin their hardness and water-resistant properties. The keratinocytes in the stratum corneum are dead and regularly slough away, being replaced by cells from the deeper layers (Figure 2).

Is the epidermis Keratinized?

This epidermis of skin is a keratinized, stratified, squamous epithelium. Cells divide in the basal layer, and move up through the layers above, changing their appearance as they move from one layer to the next.

Why stratified epithelium is called Keratinized epithelium?

Keratinized surfaces are protected from absorption by keratin protein. Keratinized epithelium has keratin deposited on the surface which makes it impermeable and dry. Examples of keratinized stratified squamous epithelium include skin, epidermis of the palm of the hand and sole of the foot, and the masticatory mucosa.

Why gingiva is scalloped?

Thin gingival tissue is associated with a thin band of the keratinized tissue, scalloped gingival contour suggestive of thin bony architecture and is more sensitive to inflammation and trauma.

Is alveolar mucosa part of gingiva?

Alveolar mucosa is the soft, thin mucous membrane that sits above the marginal gingiva and the attached gingiva, and continues across the floor of the mouth, cheeks, and lips.

Why stippling is seen in gingiva?

The attached gingiva extends from the free gingiva coronal to the alveolar mucosa. Stippling is typically seen in the attached gingiva as it is firmly attached to the underlying cementum and alveolar bone with the help of the collagen fibers of the connective tissue. Stippling is often lost as age progresses.

Is the cheek Keratinized?

Nonkeratinized squamous epithelium covers the soft palate, inner lips, inner cheeks, the floor of the mouth, and ventral surface of the tongue. Keratinized squamous epithelium is present in the gingiva and hard palate as well as areas of the dorsal surface of the tongue.

Why is oral epithelium Keratinized?

The type of epithelium covering these surfaces is a keratinized or para-keratinized stratified squamous epithelium, which provides the masticatory mucosa its capacity to better support the stress upon which it is subjected during mastication.

Are your lips Keratinized?

The external covering of the lip is keratinized stratified squamous epithelium. Note also the numerous hair follicles. As the epithelium approaches the so-called red area of the lip, the epithelium becomes non-keratinized stratified squamous epithelium.

What is the consistency of the gingiva?

The consistency of the normal gingiva is firm and resilient. The gingiva is palpated with a blunt instrument to check for its consistency. The gingival connective tissue is composed of collagen fibers and is firmly bound to the underlying mucoperiosteum, giving it a firm and resilient consistency.

What is shape of gingiva?

Gingival zenith (most apical point of gingival tissue) is distal to longitudinal axis of maxillary central incisors and canines. Gingival zenith of maxillary lateral incisors should coincide with their longitudinal axis.

What is edematous gingiva?

Enlargement of marginal and interproximal gingival tissues. Results from collagen loss and an accumulation of interstitial fluid. Tissues are easily compressed with a blunt instrument. Diffuse redness.