RESUMO
Objectives: To identify the models and levels of integration of the undergraduate dental curriculum in Umm Al-Qura University in KSA. This comprehensive evaluation and analysis of the current dental curriculum will facilitate better planning for curriculum reform, thus improving the quality of dental education. Methods: All courses were evaluated by three reviewers who independently checked the most recent course specifications forms (2021) to extract data relating to course descriptions and contents. A model of integration was identified for each course (using a modified Harden's integration ladder). Courses and their relative weighting (by credit hours) were mapped to the level of integration by years, departments, course classification, and educational methods. The overall pattern of curriculum integration was then determined. Results: All courses exhibited some level of integration to varying degrees throughout years and across departments. The most frequently used model is the nested model of integration. The overall pattern of curriculum integration is low to moderate. Highly integrated courses are only taught during the second and final years and are managed by the Departments of Basic Oral Sciences and Restorative Dentistry. Clinical courses represent 44.3% of the curriculum although only 26.6% of clinical courses have a high level of integration. Problem-based learning/case-based learning (PBL/CBL) and clinical training strategies are mostly applied in moderately to highly integrated courses, although PBL/CBL is the least used educational method throughout the curriculum. Conclusion: All courses exhibited some level of integration with an overall low to moderate pattern. More collaborative planning and working between departments are recommended to increase the level of integration of courses throughout different academic years. In addition, modern educational strategies such as PBL/CBL and blended learning should be implemented more in our dental curriculum.
RESUMO
Objectives: The aim of this study is to investigate and compare the microbial efficacy of Moringa oleifera leaf extract, octenidine dihydrochloride (OCT), NaOCl, and their combinations as intracanal irrigants against Enterococcus faecalis. Materials and Methods: Sixty single-rooted mandibular premolars were decoronated followed by root canal preparation. Each root specimen was autoclaved, inoculated with E. faecalis, and incubated at 37°C for 48 hr. Then, the specimens were divided into six groups based on the irrigation solution used: 2.5% NaOCl (Group 1), 0.1% OCT (Group 2), M. oleifera leaves extract (Group 3), a combination of M. oleifera extract and 1.25% NaOCl (Group 4), a combination of M. oleifera extract and OCT (Group 5) and normal saline (Group 6). Microbial samples were taken from each root canal before (S1) and after (S2) irrigation and the bacterial viability was assessed using colony-forming units (CFU) on bile esculin agar plates. Results: Comparing the number of CFU/ml before and after irrigation showed a significant reduction (P < 0.001) in all studied groups. Comparison between the CFU/ml after irrigation by NaOCl and each of the combination groups showed a significant difference. Conclusion: M. oleifera leaves extract and 0.1% OCT solutions have antibacterial effect against E. faecalis comparable to 2.5% NaOCl and might be used as root canal irrigants. The combination groups showed better antimicrobial activities than individual irrigants. However, further studies are required to investigate the biocompatibility and possible toxic effects of the tested irrigants.