[Cotton roll or rubber dam in endodontic treatment?].

In a clinical-microbiological study of the bacterial flora on deep areas of carious dentine in deciduous and permanent human teeth the aseptic rubber dam technique was given preference to remove successive samples of dentine from the cavity floors. The application of the rubber dam made it possible to establish and maintain a surgically clean field of operation and were an effective safeguard against contamination through seepage of saliva.