<p>The pandemic period caused by the SARS-CoV2 virus is a global problem that has an impact on the community, including students. Task load and online learning systems are factors that cause students to experience stress, this can be one of the causes of disruption of the menstrual cycle. Changes in the menstrual cycle is a health problem for some women. This study aims to link stress levels during the coronavirus disease 19 pandemic to the menstrual cycle of UNS Diploma IV Midwifery students.This study analyzed primary data of observational analytic with a cross sectional design. The independent variable in this study was stress on students, while the dependent variable in this study was changes in the menstrual cycle. We used 84 sample consisting of all midwifery student in Sebelas Maret University with an age range of 17-22 years. There is no relationship between stress during the coronavirus disease 19 pandemic and student menstrual cycles with a p value of 0.925 indicating that there is no significant relationship between the two variables tested (p &lt; 0,05). There is no significant relationship between stress levels during the pandemic and the menstrual cycle of UNS midwifery diploma IV students.</p>

Background: Oral and dental health is important, especially for school-age children. Factors that can have an impact on the level of dental and oral health are health behaviors that are influenced by knowledge. Objective: To determine the relationship or correlation between knowledge of oral and dental health on the behavior of maintaining dental health in students of Madrasah Ibtidaiah Negeri 6 Ngawi. Methods: This study used a cross sectional study design with a population of 80 students. Sampling using a total sampling technique, namely the number of samples equal to the total population. Data was collected using a questionnaire filled out online. The data that has been obtained will be analyzed with the chi-square test. Results: The study showed that most of the respondents had good knowledge of oral and dental health. Having the behavior of maintaining dental health is in the moderate category. From the results of the analysis, there is a significant relationship between knowledge about oral health and dental behavior in students of Madrasah Ibtidaiah Negeri 6 Ngawi, namely p value 0.016 <0.05. Conclusion: There is a relationship between knowledge about oral health and behavior to maintain dental health.