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Impacted wisdom teeth are classified by their direction of impaction, their depth compared to the biting surface of adjacent teeth and the amount of the tooth's crown that extends through gum tissue or bone. Impacted wisdom teeth can also be classified by the presence or absence of symptoms and disease. Screening for the presence of wisdom ...
Because impacted teeth do not erupt, they are retained throughout the individual's lifetime unless extracted or exposed surgically. Teeth may become impacted because of adjacent teeth, dense overlying bone, excessive soft tissue or a genetic abnormality. Most often, the cause of impaction is inadequate arch length and space in which to erupt.
Ankylosis of deciduous teeth may rarely occur. The most commonly affected tooth is the mandibular (lower) second deciduous molar. Partial root resorption first occurs and then the tooth fuses to the bone. This prevents normal exfoliation of the deciduous tooth and typically causes impaction of the permanent successor tooth.
There is evidence that use of antibiotics before and/or after impacted wisdom tooth extraction reduces the risk of infections by 66%, and lowers incidence of dry socket by one third. For every 19 people who are treated with an antibiotic following impacted wisdom tooth removal, one infection is prevented. [19]
In addition, the differences in alveolar process density determine the easiest and most convenient areas of bony fracture to be used, if needed during tooth extraction of impacted teeth. [ 23 ] During chronic periodontal disease that has affected the periodontium (periodontitis), localized bone tissue is also lost.
[9] [7] Rather than removal of excessive or irregular areas of labial cortex, it involves the removal of intraseptal bone and repositioning of labial cortical bone. This technique is commonly used in an area where the ridge is of relatively regular contour and adequate height but presents an undercut to the depth of the labial vestibule because ...
Treatment will depend on whether the tooth has an open or closed apex and how long the tooth has been out of the mouth prior to dental clinic arrival (see Dental Trauma Guide for full treatment details) 4 weeks: splint removal, clinical and radiographic examination 3 months: clinical and radiographic examination
The most common location of dry socket: in the socket of an extracted mandibular third molar (wisdom tooth). Since alveolar osteitis is not primarily an infection, there is not usually any pyrexia (fever) or cervical lymphadenitis (swollen glands in the neck), and only minimal edema (swelling) and erythema (redness) is present in the soft tissues surrounding the socket.