The experimental group received supra and subgingival scaling associated with oral hygiene orientation (OHO)

Control group received only supragingival scaling with OHO too.

The experimental group received supra and subgingival therapy with periodontal curettes

A single calibrated examiner performed clinical examination in pregnant women participating in the measurement of parameters: probing depth, clinical attachment level, hyperplasia, recession, bleeding, presence of plaque and tooth mobility on a standardized form.

Quantitative parameters were evaluated at six sites per tooth: mesio/medium/ distobuccal and mesio/medium/distolingual through millimeter periodontal probe-type Williams. The bleeding and the presence of plaque in dichotomous variables were measured: present and absent. All patients received oral hygiene orientation (OHO).

The patients were randomly divided by lottery into two groups. The group 1, termed SUPRA/SUB received OHO, supra and subgingival scraping and the group 2: SUPRA supragingival scraping and OHO. In both groups, the scaling procedure was performed using periodontal curettes type Mc Call 13-14 and 17-18 (DUFLEX) in one session.

Within 30 days after the initial session scraping clinical parameters were reevaluated, and now, according to every need, the patients were submitted to the supra and subgingival therapy. Noting that full dental care was provided to participants.