Correlation between Molar-Incisor Hypomineralization, Stress, and Family Functioning.

Aim: This study aims to assess the relationship between stress, family functioning, and molar-incisor hypomineralization (MIH). Materials and Methods: A total of 162 children between the ages of 7 and 9 years were included in this retrospective study, as were their respective parents; the children were examined for MIH while questionnaires centering on stress and family functioning were given to the parents. Statistical analysis was performed using the Mann-Whitney U test and independent samples T-test. Results: A significant correlation between stress as a contributing factor and MIH was concluded; children with higher stress scores had higher occurrences of MIH. On the contrary, family functioning quality was not found to have a direct correlation with MIH. Conclusions: Stress is correlated to MIH and is potentially one of the main causal factors that contribute to the development of the defect.

The mean overjet in libyan children and the relationship between increased overjet and incisors trauma.

AIMS AND OBJECTIVES: The aim of this study was to assess the mean overjet in school-going Libyan children and to examine the relationship between increased overjet and permanent incisor's trauma. MATERIALS AND METHODS: This study is a part of a cross-sectional investigation of aspects of dental health of 2015 school going Libyan children aged between 6 and 16 years old of both genders from both rural and urban areas. Overjet was measured as the horizontal distance in millimetres between the upper and lower incisors. Trauma to permanent incisors was assessed according to Elli's Classification. RESULTS: SPSS version 20.0 for percentages was used for statistical analysis. The relationship between increased overjet and incisor trauma was tested using the Chi-square test at 0.05 significance level. The overjet measurement ranged from -2 mm to 8 mm with the mean overjet of 3.062 (1.23, SD). The prevalence of incisor trauma was statistically significantly higher in children with increased overjet (P < 0.0001). CONCLUSION: The average mean overjet value in Libyan children is between 2 mm and 3 mm and below or above these values, considered decreased or increased, respectively. Traumatic injuries to permanent incisors significantly increased with increased overjet.

The Impact of Background Music in Reducing Stress During Preclinical Dental Laboratories.

OBJECTIVE: The reported high level of stress among dental students and its consequences, considering the known benefits of background music (BM). This study was designed to evaluate students' level of stress and impact of BM on their efficiency of work, performance, and learning ability during preclinical laboratory. MATERIALS AND METHODS: In this cross-sectional questionnaire study, 61 preclinical students from the College of Dentistry, Ajman university-Fujairah campus who met the defined inclusion criteria participated. After a semester of the normal laboratory without BM, various genres of BM were introduced in the laboratory. Psychological stress assessment was done using the perceived stress scale. Students were asked to fill up a written feedback questionnaire at the end of 6 weeks of BM. Descriptive statistics and Chi-square test were used to study the statistical relationships among groups. RESULTS: About 100% male and female students were found to be highly stressed due to exams and tests, 98% were stressed due to lack of time in the laboratory. About 82.5% females and 76% of males sample population expressed passion for music and also reported BM to be helpful to reduce stress in the preclinical laboratory and also to increase their concentration level. CONCLUSION: A strong positive relation has been shown in the reduction of stress with the BM in the preclinical laboratory.

Effect of Hyaluronic Acid Added to Suture Material and its Relationship with Bacterial Colonization: An In vitro Study.

AIMS AND OBJECTIVES: The aims of this study were to evaluate the presence of Staphylococcus aureus and Escherichia coli, in polyglycolic acid (PGA) 4-0 and silk sutures, with or without hyaluronic acid (HA) treatment. MATERIALS AND METHODS: This in vitro study measured S. aureus and E. coli growth on PGA and silk sutures, through incubation in agar media for 24 h. The suture length was 10 cm and divided into three parts: A (8 h), B (16 h), and C (24 h), which were observed every 8 h, followed by suspension on a microscopic slide. This was repeated thrice. The number of S. aureus and E. coli cells was recorded and compared between the suture types. RESULTS: The mean S. aureus colony forming units (CFUs) differed at each time point between non-HA and HA-PGA sutures (P = 0.0016), with a greater number of CFUs on non-HA-PGA. The mean S. aureus CFUs were significantly higher on non-HA silk than on HA-silk sutures (P = 0.008). There was a significant increase in E. coli CFUs on non-HA silk than on HA-silk sutures (P = 0.008). E. coli CFUs were higher on non-HA-PGA than on HA-PGA sutures (P = 0.006). We performed repeated measures two-way ANOVA (SPSS version 13.0) for comparison between group factors and time points and Posthoc analysis using independent samples t-test. CONCLUSIONS: HA reduced wicking in both PGA and silk sutures.