Computer-based analysis of the single chewing cycle during mastication in repeated registrations

Area of Science:

• Biomechanical Engineering
• Dental Mechanics
• Human Physiology

Background:

• Understanding masticatory movements is crucial for dental health and function.
• Existing technologies like the Selspot system provide valuable data on jaw motion.
• A need exists for refined analytical methods to interpret complex chewing cycles.

Purpose of the Study:

• To introduce and validate a new computer-based analysis for single chewing cycles.
• To complement the Selspot system's capabilities in recording mandibular movements.
• To assess the reliability and identify potential influencing factors in masticatory movement recordings.

Main Methods:

• A computer-based analysis was developed to examine individual chewing cycles.
• The Selspot system was utilized to record mandibular movements in 15 adult participants.
• Data were collected across two sessions, approximately 4 weeks apart, to assess reproducibility.

Main Results:

• The new analysis method demonstrated agreement with previously published findings on chewing rhythm, displacement, and velocity.
• Most recorded parameters showed consistency between the two testing sessions.
• A slight adaptation to the testing environment was observed, potentially influencing repeated measurements.

Conclusions:

• The developed computer-based analysis is a viable complement to the Selspot system for studying chewing mechanics.
• Masticatory movement analysis shows good reproducibility, with minor adaptation effects noted.
• Careful consideration of test situation adaptation is recommended for future longitudinal studies of chewing function.