Needs assessment study of postgraduate surgical education in Sudan: Trainees perspective.

INTRODUCTION: Global interest has increased in improving the quality and increasing the number of graduates from surgical training programmes in countries with limited resources. Needs assessment of stakeholders in the training programmes represent the backbone of such process. The aim of this study was to assess the surgical training in Sudan from trainees' perspective in order to inform training delivery. METHODS: We adopted mixed methods design using focus group discussion for qualitative data collection and questionnaire survey for quantitative data. NVivo 20 Pro was used to organize qualitative data and SPSS 24.0 was used for quantitative data analysis. RESULTS: Thematic analysis of qualitative data identified three themes. Trainees were overall satisfied that they will make good surgeons after completion of the programme. They identified case volume and collaborations with colleagues as the main strengths of the programme and lacking clear objectives for each year of training and academic activities as the main weaknesses. They suggested motivation of trainers and utilization of online resources and meeting platforms as solutions to improve supervision and academic activities during training. CONCLUSION: The gaps in training and their suggested solutions highlighted by trainees in this study should form the base for reforming the surgical training in Sudan and countries with similar circumstances.

Digital assessment of marginal accuracy in ceramic crowns fabricated with different marginal finish line configurations.

AIM: To digitally evaluate the marginal adaptation of different types of all-ceramic crowns on two different marginal configurations such as Shoulder and Chamfer of the prepared teeth. METHODS: The marginal fit of the crown specimens on the model of the prepared teeth were assessed using the dual scan replica technique. Two plastic teeth were prepared; one having a Shoulder finishing line (A), while the other with a Chamfer finish line (B). Three types of different all-ceramic crowns, layered zirconia, monolithic zirconia, and pressed lithium disilicate, were fabricated for each prepared tooth (A) and (B). Measurements for assessing the marginal discrepancy were done on four designated points on the mesial, distal, buccal, and palatal surface of the superimposed image. RESULTS: The average marginal gap was the largest in the layered zirconia group, followed by monolithic zirconia, while pressed lithium disilicate crowns showed the least marginal gaps. Crowns with Chamfer finish lines were better fitting (less marginal gap) than the shoulder finish lines across all the groups. CONCLUSIONS: Chamfer finish lines produced better fitting restorations, and heat-pressed lithium disilicate crowns showed better adaptation at the margins than both layered zirconia and monolithic zirconia.