Definition, Rarity, and Epidemiology - Tooth ankylosis is the fusion between a tooth and underlying bony support tissues. - It is a rare pathological condition in both deciduous and permanent teeth. - The prevalence of tooth ankylosis is still unknown.

Risk Factors, Diagnosis, and Causes - Risk factors for tooth ankylosis include genetic factors and dental trauma. - Diagnostic methods include clinical examinations, x-rays, and cone beam computerised tomography (CBCT). - The causes of tooth ankylosis are uncertain, but trauma, inflammation, and infection may contribute.

Signs and Symptoms - Tooth ankylosis can be recognised clinically by the loss of physiological mobility. - Radiographic detection may show loss of periodontal ligament space and evidence of replacement resorption. - Symptoms may vary depending on the growing state of teeth. - Decreased tooth count is a common symptom of tooth ankylosis.

Treatment and Prevention - Treatment for tooth ankylosis often involves removing the crown of the affected tooth. - Early orthodontic interception can help promote the recovery of lost space and tooth eruption. - Prevention and early intervention are crucial to avoid further progression and complications. - Interceptive orthodontic treatment has shown positive results in promoting space recovery.

Long-Term Stability and Treatment Options - Stability of interceptive/corrective orthodontic treatment for tooth ankylosis and Class II mandibular deficiency has been studied. - Orthosurgical treatment including anchorage from a palatal implant has been used to correct an infraoccluded maxillary first molar. - The effectiveness of the decoronation technique in the treatment of ankylosis has been evaluated. - Replantation and avulsion of permanent teeth have been studied, including survival rates and clinical outcomes. - Classification and diagnostic tools, as well as dental pathology and histological assessments, have been used in the diagnosis of tooth ankylosis.