IMPACTED TEETH What is a Impacted teeth? An impacted teeth is the one whose normal eruption is impeded in the mouth and it fails to assume it's normal anatomical arch relationships.. Such a tooth does not gain it's position even beyond the chronological eruption date. Causes/Etiology- Causes of Impaction can be broadly divided into local and systemic causes. Local causes- 1) Irregularities in position of tooth especially when it buries under crown of adjacent tooth. 2) Increased density of the overlying or surrounding bone. 3) Increased density of the overlying mucosa due to chronic inflammation. 4) Problem of space in the jaw due to Underdevelopment. 5) Early extraction of deciduous predecessor followed by drifting of adjacent teeth. 6) over retention of deciduous teeth. 7) Infection of the bone. Sys...