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Related Concept Videos

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Related Experiment Video

Updated: Mar 19, 2026

Behavioral Assessments of Spontaneous Locomotion in a Murine MPTP-induced Parkinson's Disease Model
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Parkinson's disease impairs masticatory function.

Giselle Rodrigues Ribeiro1, Camila Heitor Campos1, Renata Cunha Matheus Rodrigues Garcia2

  • 1Department of Prosthodontics and Periodontology, Piracicaba Dental School, University of Campinas, Avenida Limeira, 901, Piracicaba, São Paulo, 13414-903, Brazil.

Clinical Oral Investigations
|June 14, 2016
PubMed
Summary

Individuals with Parkinson's disease (PD) exhibit impaired masticatory function, including reduced jaw motion and bite force, even during medication "on" periods. This finding is crucial for dental professionals treating PD patients.

Keywords:
Dental prosthesisJaw movementsMasticationParkinson disease

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Area of Science:

  • Neurology
  • Biomedical Engineering
  • Dental Prosthetics

Background:

  • Parkinson's disease (PD) is a neurodegenerative disorder affecting motor control.
  • Masticatory function is vital for nutrition and quality of life.
  • Levodopa is a primary medication for managing PD symptoms.

Purpose of the Study:

  • To evaluate masticatory function in individuals with Parkinson's disease (PD) during their levodopa "on" period.
  • To compare masticatory performance between PD patients and a control group using new removable dental prostheses.

Main Methods:

  • 34 elderly participants (17 with PD, 17 controls) received new dentures.
  • Masticatory function was assessed using kinesiography for jaw motion and chewing cycles.
  • Masticatory performance (particle size) and maximum bite force were measured.

Main Results:

  • The PD group demonstrated a reduced range of jaw motion and slower masticatory cycles.
  • Parkinson's disease patients exhibited poorer masticatory performance (higher median particle size).
  • Lower maximum bite force was observed in individuals with PD.

Conclusions:

  • Parkinson's disease is associated with significantly impaired masticatory function.
  • These impairments persist even during the levodopa "on" period.
  • Findings are critical for dental professionals in prosthetics and treatment planning for PD patients.