Khalij-Libya Journal of Dental and Medical Research

The Effect of Saliva Ph on the Electrical Galvanic Current Between Titanium Implant and Cobalt Chromium Bar Attachment

2022-12-31T19:14:40+02:00

Objectives: The present study was carried out to evaluate the effect of Ph changes of the saliva on the electrical galvanic currents between the anodizing titanium implant with cobalt chromium bar attachment. Material and methods: Eighteen dental implants (9 model each model 2 dental implants with bar). Every two titanium implants were inserted within acrylic block, a cobalt chromium bar was used to connect the two implants and attached to it with titanium screws. The blocks of acrylic resin with dental implant and cobalt chromium bar classified into three groups according to the artificial saliva Ph (neutral, acidic and alkaline). Following immersion in artificial saliva the flow of galvanic current between titanium dental implant and cobalt chromium bar was measured after 7 and 30 days. The data was statistically analysis used F-test (ANOVA) to compare between the groups and post hoc test (LSD) for pairwise comparison. Results: the result of this study showed that there was statistically significant different between the groups, with higher galvanic current in acidic Ph group. Conclusion: Within the limitation of this in vitro study, there where galvanic current between titanium dental implant when coupled with cobalt chrome bar and it significantly increased with the time especially when immersed in acidic media.

Knowledge of Libyan Mothers in Tripoli about Emergency Management of Dental Avulsion

2023-01-24T16:40:23+02:00

Background and objectives. Traumatic dental injuries (TDIs) frequently occur in society and may occur at home. The ultimate prognosis of an avulsed tooth occurring in a child may depend on the parents’ knowledge of appropriate emergency measures. Therefore, the purpose of this study was to evaluate aware-ness level of Libyan mothers regarding traumas & emergency management of dental avulsion. Material and methods. A cross-sectional study was carried out by means of questionnaire-based survey. 1397 mothers had participated in this study. The questionnaire was distributed in 11 elementary schools from different regions in Tripoli during four months in 2022. A questionnaire comprising 13 questions in simple Arabic language was used. The data was collected and analyzed. Results. A total of 1397 mothers were participated in the study, only 13.9% were aware of self-dental reimplanting permanent avulsed tooth. Their knowledge of transport medium for the avulsed tooth was poor, only 12.1% identified milk as an appropriate medium, and only 20.9% would clean the avulsed tooth with tap water. The increase in the percentage of who choose the right option was significantly associated to the increase in the mother’s level of education. There were 47.7% of mothers who had a previous history of dental trauma for their children. Conclusion. This study showed an insufficient awareness regarding tooth avulsion among Libyan mothers. More efforts should be applied for conducting oral health educational campaigns aimed at improving parents’ knowledge.

Comparison of Performance on MCQ and Preclinical Practical Assessment at the End of Two Different Fixed Prosthodontic Semesters

2023-01-25T19:22:04+02:00

Objectives: This study's objective was to examine the outcomes of pre-clinical practical tests and multiple-choice questions on fixed prosthodontics from various semesters for the same student group. Material and Methods: This correlational study was conducted at the University of Tripoli's - Tripoli Dental Faculty - in the fixed prosthodontics department. The results of the MCQs and preclinical practical assessments were taken at the end of two different semesters. The group of dental students who were involved in this study was the same but they studied in two different semesters. The first semester was in Autumn 2018 and the second was in Spring 2019. The result of MCQs was obtained from the first semester at the end of the Autumn 2018 semester and the result of the preclinical practical assessment was obtained at the end of the Spring 2019 semester. These results were analyzed by using SPSS in order to compare these results. Results: Data was collected from 232 students. The distribution of data was normal. The mean and standard deviation of scores for students were 34.61±6.66 for MCQs and 19.88±7.53 for the preclinical practical assessment. For the total number of students (N=232), a paired t-test was used to compare the results of the two exams (t = 23.314, d = 231, p 0.001). In order to use independed t-test, the number of females was reduced randomly to 47 students to ensure that female and male samples are similar in terms of number. The findings show that there was no statistically significant difference in both genders, however, females performed slightly better in both exams than males. Conclusion: The achievement according to the domain varied. In the MCQs than in the preclinical practical exam, students did better. They had poor performance in the preclinical skills. Comparatively, female students performed better.

The Effect of Initial Periodontal Therapy on RANKL/OPG Ratio in Gingival Crevicular Fluid

2023-03-12T18:52:30+02:00

Background and objectives: Alveolar bone resorption an event characterizing periodontitis, induced by osteoclast activity which is regulated by ratio between receptor activator of NF-κB ligand (RANKL) and Osteoprotegerin (OPG). This study investigated the changes of RANKL/OPG ratio in Gingival Crevicular Fluid (GCF) the performing the initial periodontal therapy, on a total of 12 patients with periodontitis. Methods. GCF samples were collected from an area with active periodontitis and a healthy area. RANKL and OPG levels were measured before and after initial periodontal therapy. A group of 10 subjects without periodontitis were included as control group for the comparison. Results. The current findings showed decreased RANKL level in areas exhibited active periodontitis after initial periodontal therapy with no changes involving OPG levels, denoting that periodontal treatment resulted in decreased RANKL/OPG ratio in sites with destructive periodontal activity. Conclusion. In view of the obtained results, it can be concluded that periodontal therapy acts on the RANKL/OPG ratio, through inhibition of osteoclastogenesis. These, may encourage periodontists to apply these molecules in the procedure of proper periodontal diagnosis as well in monitoring the response and efficacy of periodontal treatment.