The Improvement of Dental Posture Using Personalized Biofeedback

Area of Science:

• Ergonomics and Occupational Health
• Biomedical Engineering
• Dental Medicine

Background:

• Dentists maintain static, awkward postures during prolonged, concentrated work.
• Poor posture in dentistry can lead to musculoskeletal disorders.
• The need for effective posture training solutions for dental professionals is critical.

Purpose of the Study:

• To introduce a real-time personalized biofeedback system for dental posture training.
• To utilize vibrotactile biofeedback for immediate postural correction.
• To evaluate the system's effectiveness in improving dental student posture.

Main Methods:

• Developed an integrated system with a wearable sensor and processing software.
• Employed Hidden Markov Models (HMMs) for personalized vibrotactile feedback generation.
• Conducted a randomized crossover trial comparing feedback vs. no feedback groups on posture metrics.

Main Results:

• System users exhibited statistically significant reductions in back tilt (Backx, Backy) and muscular load.
• The 10th, 50th, and 90th percentile measurements showed significant improvements.
• The vibrotactile biofeedback group demonstrated superior posture compared to the control group.

Conclusions:

• A personalized biofeedback system for dental posture training is feasible.
• The system is associated with quantitative improvements in dental posture.
• Vibrotactile biofeedback offers a promising approach for ergonomic interventions in dentistry.