Magnification effect on fine motor skills of dental students

PLoS One. 2021 Nov 8;16(11):e0259768. doi: 10.1371/journal.pone.0259768. eCollection 2021.

Abstract

Objectives: This study observed the effect of different magnification systems on dental students' real and perceived fine motor skills.

Methods: This was a laboratory-based experimental study. Students in the fifth year of an undergraduate dentistry program (N = 92) participated in this study. The dependent variables were real motor skills, perceived motor skills and time required to complete the fine motor skills test. The independent variable was the use of a magnification system under four conditions. For each condition, the Dental Manual Dexterity Assessment was performed, which consisted of inserting the #3195FF bur into targets positioned on a Styrofoam plate. The accuracy of each penetration of the targets was scored, using a point system with a maximum possible score of 246 points. Students' perceived fine motor skills were assessed using a visual analog scale (VAS) that ranged from zero for no skills to ten for maximum skills. A descriptive statistical analysis and the repeated measures ANOVA were performed (α = 0.05).

Results: The Galilean and Keplerian loupes were found to positively affect students' real fine motor skills (p<0.01); however, perceived fine motor skills and time were significantly better (p<0.01) under the naked eye.

Conclusions: Dental students' real fine motor skills were better when Galilean and Keplerian loupes were used, but the perceived fine motor skills were not.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Motor Skills*
  • Musculoskeletal Physiological Phenomena
  • Students, Dental*

Grants and funding

We would like to thank the São Paulo Research Foundation (FAPESP - Process #2015/24269-4) for financial support (PPNS), and the Coordination for the Improvement of Higher Education Personnel (CAPES) for the PhD’s scholarship (DW).