Calcium hydroxide has limited effectiveness in eliminating bacteria from human root canal when assessed by culture techniques
AIM To determine to what extent does calcium hydroxide intracanal medication eliminate bacteria from human root canals , compared with the same canals before medication , as measured by the number of positive cultures , in patients undergoing root canal treatment for apical periodontitis ( teeth with an infected root canal system ) .
Microbiological evaluation of clindamycin as a root canal dressing in teeth with apical periodontitis.
The present investigation was design ed to study the effect of clindamycin on  root canal infection  when placed as an intracanal dressing . Twenty-five teeth with necrotic pulps and periapical radiolucencies were included . Following initial bacteriological sampling and routine instrumentation , clindamycin powder mixed to a paste with saline was applied for 14 days . The presence or absence of bacteria was determined in sample s taken immediately after removal of the dressing , and after a period of 7 days during which the canals were filled with sampling fluid . Bacteria were recovered from four and six teeth respectively . The results indicated that clindamycin offered no advantage over conventional root canal dressings , such as calcium hydroxide , and it is therefore not recommended for use in routine endodontic therapy
Calcium hydroxide has limited effectiveness in eliminating bacteria from human root canal when assessed by culture techniques
AIM To determine to what extent does calcium hydroxide intracanal medication eliminate bacteria from human root canals , compared with the same canals before medication , as measured by the number of positive cultures , in patients undergoing root canal treatment for apical periodontitis ( teeth with an infected root canal system ) .