Comparative Analysis of Manual Dexterity of Dental Students at Ajman University following One Academic Year of Preclinical Training Sessions: A Longitudinal Cohort Study

Abstract

Objectives Dental students must complete two stages of training, namely, preclinical training on phantom head models and clinical training on actual patients to acquire the practical skills required by their Bachelor of Dental Surgery program.Our objectives are to evaluate the level of improvement of the manual skills obtained by third-year dental students after one full academic year of preclinical training courses using dexterity tests under direct and indirect vision and to compare the improvement among male and female dental students under the same conditions. Materials and Methods A total of 72 preclinical students participated in our cohort trial, each of whom was assigned a random identification number that was only known to the researchers. After the beginning of the academic year, the experiment was performed under identical conditions for both the O'Connor Tweezer Dexterity Test and the Purdue Pegboard Test. The examinations were conducted at two distinct times: T0 before phantom laboratory training (the beginning of preclinical sessions) and T1 after phantom laboratory training (9 months after T0). Statistical Analysis Signed-rank test of Wilcoxon over two separate periods (T0 and T1), comparisons were made between the direct and indirect visual dexterity test scores. In addition, the Mann–Whitney U test was used to compare results across gender. The statistical significance (p-value) was set at below 0.05 with a confidence level of 95%. Results A statistically significant difference was detected between the T0 and T1 assessments on the Purdue Pegboard Test and the O'Connor Tweezer Dexterity Test for all selected dentistry students in both direct and indirect conditions (p < 0.001). Conclusion Further investigation in other dental departments or schools, particularly those with different entry standards, is required prior to making a definitive conclusion about the use of these dexterity assessments as predictors of prospective dental students' performance.

An examination of relationships between vitamin B12 status and functional measures of peripheral neuropathy in young adult vegetarians

“…Published data were not available for peripheral neuropathy indicators in vitamin B12 deficiency; hence, a sample size of 30 was targeted as has been recommended for feasibility studies ( 34 ). As reference, in university students, dexterity training demonstrated a detectable difference of 1.96 for PPT assembly scores (SD = 1.26 and 1.98), suggesting a sample size of 24 ( 35 ). Statistical analysis was conducted using the Statistical Package for Social Sciences (IBM SPSS Statistics for Windows, Version 28.0.…”