In vitro evaluation of surface roughness of titanium abutments after air polishing with different abrasive powders.

Objectives: The purpose of this study was to evaluate the effects of air polishing with sodium bicarbonate and erythritol powders on surface roughness and morphological changes in titanium abutments.

Methods: A total of 45 grade V titanium discs were divided in three groups: Group A (Control) air polished with air/water; Group B, air polished with sodium bicarbonate powder; and Group C, air polished with erythritol powder. After air polishing, the samples' roughness (S) in micrometres were analysed with an optical profilometer.

[Validation of the Oral Impacts on Daily Performance index among the Portuguese population].

The Oral Impacts on Daily Performance (OIDP) questionnaire is an oral health-related quality of life indicator. It was developed in order to assess the influence of oral conditions on the self-ability to execute daily activities. The main goal of this research was to validate the OIDP for the Portuguese population aged 18 years and above.

study of the effect of an essential oil and a delmopinol mouth rinse on dental plaque bacteria.

Context: Mouthrinses are used, by many of our patients, as a complement to daily dental hygiene routine. The use of a toothbrush and an interproximal cleaning method may not be enough to control dental plaque. Essential oils and delmopinol mouth rinses are effective for the prevention of dental caries and gingivitis.

Oral health habits, attitudes and behaviors of Portuguese adolescents.

Purpose: Oral health has a profound impact on the health of adolescents. The aim of the present study was to obtain information on habits, knowledge and oral hygiene attitudes of Portuguese teenagers and to study the gender differences concerning these issues.

Methods: A total of 1203 adolescents participated in the study (55.