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Dental cysts are usually caused due to root infection involving tooth decay. Untreated dental caries then allow bacteria to reach the level of the pulp, causing infection. The bacteria gains access to the periapical region of the tooth through deeper infection of the pulp, traveling through the roots.
Dental intrusion is an apical displacement of the tooth into the alveolar bone. This injury is accompanied by extensive damage to periodontal ligament , cementum , disruption of the neurovascular supply to the pulp, and communication or fracture of the alveolar socket.
If apex of tooth is displaced towards the palate and making contact with the tooth germ then tooth is extracted Intrusive Luxation: Displacement of tooth into the alveolar bone (pushed into the socket) causing fracture of the alveolar bone. It is the most damaging injury to the tooth and supporting tissues as ankylosis and pulp necrosis can occur.
Adult front teeth (which usually erupt at around six years of age) can be replaced immediately if clean. If a tooth is avulsed, make sure it is a permanent tooth (primary teeth should not be replanted, and instead the injury site should be cleaned to allow the adult tooth to begin to erupt). Reassure the patient and keep them calm.
Periapical granuloma, [1] also sometimes referred to as a radicular granuloma or apical granuloma, is an inflammation at the tip of a dead (nonvital) tooth. It is a lesion or mass that typically starts out as an epithelial lined cyst, and undergoes an inward curvature that results in inflammation of granulation tissue at the root tips of a dead tooth.
Intrusion is a movement in the field of orthodontics where a tooth is moved partially into the bone. Intrusion is done in orthodontics to correct an anterior deep bite or in some cases intrusion of the over-erupted posterior teeth with no opposing tooth. [1] Intrusion can be done in many ways and consists of many different types.
The same tooth also has an extensive periodontal defect. At this stage, without further information, it is difficult to tell which process has occurred first and lead to the death of the pulp. Combined periodontic-endodontic lesions take the form of abscesses and can originate from either or both of two distinct locations [ 1 ] and may be ...
The cyst surrounds the crown and extends for some distance along the root surface so that a significant portion of the root appears to lie within the cyst, as if the tooth was erupting through the centre of the cyst. The radiographic distinction between an enlarged dental follicle and a small dentigerous cyst can be difficult and fairly arbitrary.
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