Читать книгу Handbook of Oral Pathology and Oral Medicine - S. R. Prabhu - Страница 91

 Frequently impacted teeth: mandibular third molars followed by the maxillary third molars, maxillary canines and mandibular premolars

 Young adults are commonly affected; often detected on routine radiography

 Impacted deciduous teeth are extremely rare

 Impacted permanent first and second molars are rare

 Often supernumerary teeth are impacted (detected on radiography)

 Impacted teeth may or may not be symptomatic

 With no history of extraction, clinically the number of teeth present in the dentition is less than normal

 Impaction can be full or partial

 Symptomatic patients with lower third molar may complain of earache or paraesthesia of the lip

 Pericoronitis may occur (pain, inability to open the mouth, swelling of the pericoronal soft tissue)

 Often, all four third molars may be impacted

 Occasionally impactions are associated with syndromes or odontogenic cysts and tumours