[Some frequently used substances, instruments and methods in mouth care with regard to evidence-based applications]

The purpose of this study was to evaluate current practice in mouth care as few data exist in this area. By means of a questionnaire nurses were asked which mouth care substances, methods and instruments they used in their clinical practice. They were also asked about their clinical experience. The most frequently used substances and instruments were then examined with regard to their evidence base using an evaluation system bases on a compilation of scientific literature. The results show that nurses' selections of mouth care substances and instruments are mainly based on their clinical experience and on traditions. There is little scientific evidence for their mouth care practice. Using assessment instruments in order to assess oral conditions and evaluate nursing interventions as well as using more substances with proven effect has the best potential to improve practice. There is an obvious need for evidence-based guidelines and standards.