Schröder ventilation
The Schrodinger Dersche ventilation , named after the Berlin dentist Hermann Schroeder , although they Shadoan and Farrar was already described in the 19th century by Desirabode, is a very infrequently used surgical treatment measure in the upper or lower jaw . It is also known as apical ventilation ( cortical trephination ).
indication
In acute apical periodontitis , drainage of the secretion ( pus ) through the root canal after trepanation of the tooth is not always achievable or sufficient. This applies e.g. B. also for teeth that are already filled with roots. At this stage of the inflammation , even an incision would not bring relief, because the process has not yet penetrated into the subperiosteal or submucosal tissue (located under the periosteum or mucous membrane), but is spreading in the bone around the tip of the root: the enosteal stage . Since this is associated with very severe pain, rapid intervention is required.
Surgical technique
After infiltration or conduction anesthesia , a buccal incision about 1.5 cm long is made directly on the bone. The mucoperiosteal flap is loosened or raised a little with a raspatory . With a medium round burr , a canal is drilled into the bone up to the region of the root tip until the secretion is drained. This pressure relief provides immediate relief.
In order to keep the drainage opening open, drainage is carried out using a small gauze strip and this is changed daily.
forecast
Schröder's ventilation usually prevents a further exacerbation (spread, worsening) of the inflammation and leads to rapid improvement. After the infection has subsided, a root tip resection or, if necessary, tooth removal is possible after about two weeks , measures that are contraindicated during the acute stage .
Legal
Schröder's ventilation is no longer mentioned in more recent textbooks on dental surgery because it was incorrectly carried out.
