ABSTRACT
Background: Orthodontic appliances can influence the oral environment, including salivary pH levels, which play a crucial role in maintaining oral health. Understanding how different orthodontic appliances affect salivary pH levels can help in improving treatment outcomes and minimizing potential side effects. Materials and Methods: In this in vitro study, we evaluated the effects of various orthodontic appliances on salivary pH levels using a simulated oral environment. Four different types of orthodontic appliances were tested: traditional metal braces, ceramic braces, lingual braces, and clear aligners. Saliva samples were collected and subjected to pH measurements using a standardized method. The pH measurements were recorded at three different time intervals: immediately after appliance placement, after 24 hours, and after 48 hours. Results: The initial pH values varied among the different orthodontic appliances: metal braces (pH 7.2), ceramic braces (pH 7.4), lingual braces (pH 7.1), and clear aligners (pH 7.5). After 24 hours, there was a decrease in pH levels for all groups: metal braces (pH 6.8), ceramic braces (pH 7.0), lingual braces (pH 6.7), and clear aligners (pH 7.2). After 48 hours, the pH levels continued to decrease: metal braces (pH 6.5), ceramic braces (pH 6.8), lingual braces (pH 6.4), and clear aligners (pH 6.9). Conclusion: Our findings suggest that different orthodontic appliances have varying effects on salivary pH levels. Metal braces and lingual braces tend to cause a more pronounced decrease in salivary pH compared to ceramic braces and clear aligners. Monitoring salivary pH levels during orthodontic treatment may be beneficial in identifying potential risks to oral health and implementing appropriate interventions.
ABSTRACT
BACKGROUND: Leadership is a wide concept that is rapidly developing. Diverse theories suggest different styles of leadership, with strong relationships between the different styles and their outcomes. The transformational style emphasizes motivating employees and encouraging them to find new ways of dealing with issues. The transactional (TL) style promotes ideas of rewards and punishments. The Laissez-faire style is characterized by relaxation and the tendency to leave things to happen with minimal interference. MATERIALS AND METHODS: This is a descriptive cross-sectional study design conducted in Primary Healthcare Centers in Riyadh, Saudi Arabia. The leadership styles were assessed using a Multi-Factor Leadership Questionnaire, which identifies the different styles of leadership. SPSS v 26.0 was used for data analysis. t-test employed to compare leadership style between raters and managers. Logistics regression model used to determine the influence of leadership styles of managers. Pearson correlation coefficient determined the linear relationship between leadership styles and its domains. RESULTS: A total of 130 respondents (65 managers vs. 65 raters) took part. "Raters" refer to any persons other than the manager, such as a secretary, nurse, doctor. The "manager" is when the person rates himself. The global transformation mean score was 3.55, for TL it was 3.42 and for passive avoidant, the mean score was 0.93. The passive avoidant (t = 2.005; P = 0.047) and management by exception (passive) (MBEP) mean scores of raters were statistically significantly higher than managers. In the binary regression model, MBEP was the independent significant predictor of manager. CONCLUSION: The perceived leadership style of Primary Healthcare Center managers was transformational but with TL. Transformational leadership was positively correlated with TL leadership but negatively correlated with passive avoidant (The Laissez-faire style). The outcome of this study demonstrated that intellectual stimulation, idealized attributes, and inspirational motivation are perhaps better than contingent reward, active management.
ABSTRACT
INTRODUCTION: Sudden infant death syndrome (SIDS) is characterized as the sudden unexpected death of a healthy infant below the age of 12 months with an unknown cause even after careful death scene assessment. The aim of this study is to estimate the percentage of proper sleep practices among infants and assess the knowledge and awareness of SIDS and its associated risk factors among Saudi and non-Saudi mothers. METHODS: This cross-sectional study was done in Riyadh, Saudi Arabia. The data were collected using an anonymous, self-administered questionnaire that consisted of 36 items that were divided into demographic data of the parents and child, observations of the child's sleep practice, and knowledge and awareness of SIDS and its associated risk factors. RESULTS: A total of 667 participants completed the questionnaire. The mean age of the mothers was 31.44 + 7.55. As for the nationality, 527 (79%) were Saudi and 140 (21%) were non-Saudi. The majority had bachelors' degrees 407 (61%). Sleep practices assessment demonstrated that 391 (58.6%) of infants were sleeping in the supine position. A total of 329 (49.3%) participants reported hearing about SIDS from social media and websites as being the major source of information. SIDS acknowledgment was higher in non-Saudi mothers compared to Saudis. CONCLUSION: The results provide informative descriptive data on childcare practices in Saudi Arabia. Considerable variation was noted and the results from this study are intended to have a better understanding of the prevalence of childcare practices and knowledge of SIDS risk factors in Saudi and non-Saudi mothers.