Portal:Dentistry/Selected picture
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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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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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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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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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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.
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Orthodontics is a specialty of dentistry that is concerned with the study and treatment of malocclusions, which may be a result of tooth irregularity, disproportionate jaw relationships, or both. The word comes from the Greek words ortho meaning straight and odons meaning tooth. There are many reasons why orthodontic therapy may be desired, including to allow proper eruption of teeth.
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Dental braces are a device used in orthodontics to correct alignment of teeth and their position with regard to occlusion. They are often used for malocclusions such as underbites, overbites, cross bites, open bites, or crooked teeth. Most orthodontic patients are children or teenagers, however, more adults have been seeking orthodontic treatment.
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A dental bur is a type of drill bit used in a handpiece (commonly called a dental drill). Burs are used in dentistry to shape teeth in preparation for a filling or other type of restoration, including crowns and bridges. The burs are usually made of tungsten carbide or diamond. The three parts to a bur are the head, the neck, and the shank. The head of the bur contains the blades which produce the cutting action.
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