Impacted teeth. Odontogenic periostitis of jaws. Lecture Impacted teeth. Odontogenic periostitis of jaws.

IMPACTED TEETH An impacted tooth is one that is partially erupted or unerupted and will not eventually assume a normal arch relationship withother teeth and tissues.

Causes of Impacted Teeth Role of civilization Local causes of Impaction Systemic causes of impaction

Local causes of Impaction Lack of space in the dental arch for eruption ; The density of the overlying or surrounding bone ; Long continued chronic inflammation with resultant increase in the density of the overlying mucous membrane ; Premature loss of the primary teeth ; Acquired diseases, such as necrosis due to infection or abscesses, and inflammatory changes in the bone due to exanthematous diseases in children;

Lack of space in the dental arch for eruption

Impacted teeth occur in the following order Mandibular third molars Maxillary third molars Maxillary cuspids Mandibular bicuspids Mandibular cuspids Maxillary bicuspids Maxillary central incisors Maxillary lateral incisors Maxillary or mandibular first molars are rarely impacted

Impacted teeth

Classification of impacted mandibular third molars A. Relation of the tooth to the ramus of the mandible and the second molar ; B. Relative depth of the third molar in bone; C. The position of the long axis of the impacted mandibular third molar in relation to the long axis of the second molar : vertical, horizontal, inverted, mesioangular, distoangular, buccoangular, linguangular.

Classification of impacted mandibular third molars

Radiographic visualization of impacted teeth

The removal of impacted mandibular third molars

Scheme of Periconitis

Scheme of Periostitis ( upper jaw )

Scheme of Periostitis ( lower jaw )

Acute Periostitis left upper jaw

Acute Periostitis left lover jaw

Acute Periostitis of hard pallate

Surgical treatment of periostitis

Treatment of abscess of hard pallatine