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Many students at Airlangga University are active smokers. This is because the age group of 17-23 is the target audience for cigarette marketing. Furthermore, they are in an experimental phase, with a strong desire to follow smoking trends. Smoking is associated with oral and dental health problems, such as teeth staining. Active smokers experience teeth staining twice as often as non-smokers. Teeth staining can be reduced by using charcoal-based toothpaste. Charcoal can absorb active carbon and, as a result, reduce teeth staining. The purpose of this research was to identify the relationship between respondents' knowledge about teeth staining and the benefits of charcoal with charcoal-based toothpaste use. The method used was quantitative analysis with data collection from 110 respondents using a non-randomized accidental sampling method with a questionnaire. The research results showed that 57.3% of the respondents had an excellent understanding of teeth staining, and 46.4% had an excellent understanding of the benefits of charcoal. However, 57.3% of the respondents did not choose toothpaste with charcoal content. This data was analyzed using multiple logistic regression, and the value (p) is > 0.05. In addition, a Spearman's rank correlation analysis was performed on the variables of understanding teeth staining and knowledge of the benefits of charcoal, resulting in a value (p) = 0.03. Therefore, it can be concluded that there was no relationship between the level of respondents' knowledge of teeth staining and their choice of charcoal-based toothpaste, but there was a relationship between understanding teeth staining and knowledge of the benefits of charcoal in toothpaste. So health promotion can be carried out with the aim of motivating active smoking students at Airlangga University to choose charcoal toothpaste. [ABSTRACT FROM AUTHOR]

This research attempts to examine the effectiveness of the areas without smokeables “Kawasan Tanpa Rokok”(KTR) policy in Udayana University, Denpasar which was implemented at about one year (June 2015-June 2016). Furthermore, this research aims to emphasize the rationality of the smokers which are continuing to smoke although the KTR signs was put in the Udayana University areas. To accent the private and personal rationality, the phenomenology method which focus on subjective actor (the smokers) was used in this research. This method is a qualitative method and purpose to collect the deeper data to expound the personal reasons of the smokers who always smoke continuously in KTR areas. From the result of the research, there were some problems that made the KTR policy was not effective in Udayana University areas. First, there was no clear sanction for the smokers; Second, the lecture and the university employee did not show the good instance to comply with the KTR policy; Third, a cigarette was sell openly in University store (Waserda); Fourth, there was no smoking areas for the smokers in Udayana University, Denpasar.