WISDOM TOOTH EXTRACTION
Wisdom teeth are the last teeth to come through, growing at the rear of your jaw. Most people have four wisdom teeth – one in each ‘corner’ at the back of their mouth. Usually, wisdom teeth come through during the late-teens to early-twenties. As they are the last to come through, there isn’t always enough room remaining for them to grow through properly.
Given this, wisdom teeth can sometimes grow through at an angle, potentially getting ‘stuck’ and only coming partway out. When this happens, it is known as having an ‘impacted’ wisdom tooth.
Due to this, wisdom teeth can need treating. Usually this would be through a full extraction. However, in some cases, where the location of the tooth may cause risk of nerve injury, a dentist can remove just the ‘crown’ of a tooth. This is known as a coronectomy.
WHY DOES A WISDOM TOOTH NEED EXTRACTING?
Some reasons wisdom teeth can require extraction include:
- tooth decay (dental caries)
- gum disease (also called gingivitis or periodontal disease)
- pericoronitis (when plaque causes an infection of the soft tissue that surrounds the tooth)
- an abcess (a collection of pus in your wisdom teeth or surrounding tissues due to bacterial infection)
- as well as a number of other infection and illness related reasons.
CORONECTOMY
In cases where a full extraction carries too high a risk – for example, due to the nerve in your jaw being too close to the roots of the wisdom tooth – a coronectomy can be used to prevent any risk of nerve injury.
During a coronectomy, the crown of the wisdom tooth will be removed, with the roots being left in your jaw, intact. This treatment isn’t recommended if the tooth or its roots are infected.
APICECTOMY
Apicectomy treatment is also known as root surgery. This is where the tip of a tooth’s root (the apex) is removed in a minor surgical operation. This can be carried out if infection or other complications persist following root canal treatment, or if the dentist has been unable to seal the very tip of a root with a normal filling. An apicectomy then allows the removal of any apex infection, preserving the natural tooth, as opposed to extracting it.
Using local anaesthesia, the area around the tooth is numbed, before the nearby gum tissue is raised away from the tooth, gently, to allow access to the apex infection. This is then thoroughly cleaned out, before the tip of the root is removed and a special cement placed to seal the new opening. Finally, the gum tissue is replaced, to allow for healing to occur. Sutures (stiches) are often used to hold the gum back in place.
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