Related Experiment Video
Updated: Nov 28, 2025

06:49
A Standardized Approach to Extra-Oral and Intra-Oral Digital Photography
Published on: July 22, 2022
9.6K
Changes in dental hygiene students' working posture following digital sound feedback
Eun Bi Sim1, Bo Young Park1, Kyu Tae Lee2
1Department of Dental Hygiene, College of Software and Digital Healthcare Convergence, Yonsei University, Wonju, Korea.
Summary
A smartphone app with digital sound feedback improved dental hygiene students' working posture. The Rapid Entire Body Assessment (REBA) scores significantly decreased, indicating better ergonomics and reduced risk of musculoskeletal issues.
Area of Science:
- Ergonomics
- Dental Hygiene
- Digital Health
Background:
- Dental hygiene students often adopt poor working postures.
- These postures can lead to musculoskeletal disorders.
- Objective assessment of posture is crucial for intervention.
Purpose of the Study:
- To evaluate the effectiveness of a digital sound feedback system.
- To assess changes in working posture among dental hygiene students.
- To correlate feedback system use with improved Rapid Entire Body Assessment (REBA) scores.
Main Methods:
- 28 dental hygiene students participated.
- A smartphone application provided digital sound feedback for four weeks.
- Rapid Entire Body Assessment (REBA) scores were measured pre- and post-intervention.
Main Results:
- Statistically significant decreases in overall REBA scores were observed (p < .001).
- Significant improvements were noted in neck (p < .001) and trunk (p = .042) REBA scores.
- The intervention effectively encouraged correct working posture.
Conclusions:
- Digital sound feedback systems are effective for improving dental hygiene students' posture.
- This technology can help reduce the risk of work-related musculoskeletal problems.
- The study demonstrates a practical application of digital health in dental education.

