Results of oral cavity sanation performed upon 2366 pregnants during years 2003-2006 in the city of Derbent were studied. It was established that the need in caries and its complications treatment was equal to 78.91+/-0.84% of all pregnants. Due to the study of sanation refusal reasons and individually oriented educational work it was possible to reduce the number of unfavourable decisions (to refuse from sanation) from 15.02+/-1.77% in 2003 to 8.91+/-1.21% in 2006. Due to the reduction of this number and the ART-technique of caries treatment implementation in women with heavy pregnancy running the following sanation indeces improved: the portion of sanated pregnants from all needed in such procedure increased from 77.59+/-2.07% in 2003 to 87.45+/-1.41% in 2006, the number of filled carious lesions increased from 74.13+/-1.16% to 88.18+/-1.86% in 2006, the portion of extracted teeth from those intended for extraction 0- from 75.90+/-2.71% in 2003 to 89.17+/-1.75% in 2006.