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Impacted wisdom teeth are classified by the direction and depth of impaction, the amount of available space for tooth eruption and the amount of soft tissue or bone that covers them. The classification structure allows clinicians to estimate the probabilities of impaction, infections and complications associated with wisdom teeth removal. [31]
A treatment controversy exists about the need for and timing of the removal of disease-free impacted wisdom teeth. Supporters of early removal cite the increasing risks for extraction over time and the costs of monitoring the wisdom teeth. Supporters for retaining wisdom teeth cite the risk and cost of unnecessary surgery.
Sometimes impacted wisdom teeth (wisdom teeth that are stuck and unable to grow normally into the mouth) cause recurrent infections of the gum (pericoronitis), and may be removed when other conservative treatments have failed (cleaning, antibiotics and operculectomy).
This may involve having fixed or removable appliances for a few months before the transplant is done. [10] Occasionally the tooth to be transplanted will need to be removed before there is enough space available at the donor site. [10] These teeth can be kept in liquid nitrogen until pre-surgical orthodontic treatment is completed. [10]
Most often, the cause of impaction is inadequate arch length and space in which to erupt. That is the total length of the alveolar arch is smaller than the tooth arch (the combined mesiodistal width of each tooth). The wisdom teeth (third molars) are frequently impacted because they are the last teeth to erupt in the oral cavity.
When extracting lower wisdom teeth, coronectomy is a treatment option involving removing the crown of the lower wisdom tooth, whilst keeping the roots in place in healthy patients. This option is given to patients as an alternative to extraction when the wisdom teeth are in close association with the inferior alveolar nerve , and so used to ...
The frequency for ankylosis to happen in deciduous teeth is far more frequent than that in permanent teeth, with a ratio of about 10 to 1, and the majority of [4] the ankylosed teeth occur in lower teeth, about twice as often as in the upper teeth. [6] Therefore, it is strongly believed that their incidence may be due to different causes.
The teeth to be removed are either struck with a hammer-like tool or jerked to the side with a lever-like tool to loosen them, before being extracted. Among the Uma people of Central Sulawesi , all of a young girl's incisors (four upper and four lower) were removed in the rite of passage called ( Uma : mehopu’), which was performed at the ...
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