Portal:Dentistry/Selected picture

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Portal:Dentistry/Selected picture/1

Credit: dozenist

A mucocele is a swelling of connective tissue consisting of collected mucin from a ruptured salivary gland duct. The cause is usually trauma. It most commonly appears on the lower lip but can also be found on the inner cheek, tongue, and floor of the mouth.

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Credit: Kozlovsk

A fissured tongue is a benign condition characterized by deep grooves (fissures) in the dorsum of the tongue. It is associated with the Melkersson-Rosenthal syndrome, along with facial paralysis and swelling of the lips. Fissured tongue may also be found in most patients with Down syndrome and in association with geographic tongue.

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Credit: Gregory Maxwell

The human mandible is the largest and strongest bone of the face. It forms the lower jaw and holds the lower teeth in place. The mandible consists of a curved, horizontal portion, the body, and two perpendicular portions, the rami, which unite with the ends of the body nearly at right angles.

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Credit: Dozenist

Mandibular tori are bony growths in the mandible along the surface nearest to the tongue. They are usually present near the premolars and above the location of the mylohyoid muscle's attachment to the mandible. Mandibular tori are usually a clinical finding with no treatment necessary, but they may need to be removed when fabricating a denture.

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Cross-section of a tooth, showing enamel and dentin.

Credit: Dozenist

Dentin is the part of a tooth underneath enamel or cementum. It is formed by the odontoblasts of the dental pulp in a process known as dentinogenesis. Dentin has a complex structure, with microscopic channels, called dentinal "tubules," radiating outward through the dentin from the pulp cavity to the exterior cementum or enamel border. These tubules have different configurations in different species and ranges between 0.8 and 2.2 micrometers.