The presence or absence of bacteria in gingival pockets and the reaction in healthy pockets to certain pure cultures; a bacteriological and histological investigation
Waerhaug, J.; Steen, E.
Odontologisk Tidskrift 60(1-2): 1-24
1952
ISSN/ISBN: 0472-514X PMID: 14957364 Document Number: 10157
The authors describe a special technique for bacteriological examination of gingival pockets.× By means of this technique they investigate pockets in dogs and human beings. In dogs, furthermore, they undertake a histological investigation of pockets, after these have been filled with a concentrated bacterial culture. On the basis of these experiments they draw the following conclusions: 1. Pockets without calculus or deposits are as a rule sterile. 2. Pockets where calculus or deposits are present, are usually infected. 3. If pure cultures of pathogenic bacteria are inserted into healthy, bacteriα-free pockets, they cause a necrosis of the epithelium and an inflammation of the connective tissue with formation of exudate in the pockets. These processes lead to the regaining of a bacteriafree condition in the pockets after 48 hours at most. 4. 1Vhen the bacteria have been killed and or removed together with the necrotic tissue elements, the pocket epithelimn will join with the tooth surface as before the operation had been made. 5. Bacteria are not retained in a pocket if there are no calculus or other deposits on the tooth, or if there are no artificial crowns which allow bacterial retention. 6. By complete removal of the subgingival calculus it is possible to render infected pockets sterile again. 7. It is possible to obtain bacteriα-free pockets around artificial crowns which offer no retention possibilities.
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