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Damage to the inferior alveolar nerve is a risk of lower wisdom tooth removal (and other surgical procedures in the mandible). [20] This means there is a risk of temporary or permanent numbness or altered sensation to the lip +/- chin on the side the surgery is taking place.
Temporary and permanent inferior alveolar nerve (IAN) damage is a known complication of the surgical removal of impacted lower third molars, happening in 1 in 85 patients and 1 in 300 extractions, respectively. Studies have shown that certain risk factors may increase the likelihood of IAN damage.
This is due to the close proximity of the apex of a primary tooth to the permanent tooth underneath. The permanent dentition can suffer from tooth malformation, impacted teeth and eruption disturbances due to trauma to primary teeth. The priority should always be reducing potential damage to the underlying permanent dentition. [36]
Coronectomy should be considered if there are signs that the patient is at a high risk of nerve damage during extraction: Lower wisdom tooth is shown to be close to the inferior alveolar canal radiographically: [6] Signs of narrowing or diversion of the canal; Roots are darkened/ Canal is interrupted; Interruption of lamina dura
These high risk wisdom teeth can be further assessed using cone beam CT imaging to assess and plan surgery to minimise nerve injury by careful extraction or undertaking a coronectomy procedure in healthy patients with healthy teeth. [9] The risk of nerve injury in relation to mandibular dental implants is not known but it is a recognised risk ...
Impacted wisdom teeth; Other names: Impacted third molars: 3D CT of an impacted wisdom tooth adjacent the inferior alveolar nerve prior to removal of wisdom tooth: Specialty: Dentistry, oral and maxillofacial surgery: Symptoms: Localized pain and swelling behind the last teeth: Complications: Infections, loss of adjacent teeth, cysts: Usual ...
As growth of the alveolar bone continues and the adjacent permanent teeth erupt, the ankylosed deciduous tooth appears to submerge into the bone, although in reality it has not changed position. Treatment is by extraction of the involved tooth, to prevent malocclusion, periodontal disturbance or dental caries. [3]
The inferior alveolar nerve, which is a branch of the mandibular nerve, must be identified during surgery and worked around carefully in order to minimize nerve damage. The numbness may be either temporary, or more rarely, permanent. [25] Recovery from the nerve damage typically occurs within three months after repair.
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