Abstract
Objective
To evaluate masticatory function in individuals with Parkinson’s disease (PD) during levodopa “on” period using new removable dental prosthesis.
Materials and methods
A total of 34 elderly individuals with PD (n = 17, mean age = 69.41 ± 4.65 years) or without PD (n = 17, mean age = 70.71 ± 4.65 years) were recruited for this study. Participants received new complete dentures and/or removable partial dentures. Two months after the subjects were free of any prostheses discomfort, masticatory function was assessed. A kinesiographic device was used to measure the range of jaw motion and jaw movements while chewing a silicone test material (Optocal). Masticatory performance was determined by median particle size (X50) of the Optocal after 40 masticatory cycles. Maximum bite force was assessed by a strain sensor placed in the bilateral first molars region. Data were analyzed by t test (P < 0.05).
Results
The PD group showed a decreased range of jaw motion, longer duration and slower velocity of the masticatory cycle (P < 0.05), higher X50 value, and lower maximum bite force (P < 0.05).
Conclusion
PD patients have impaired masticatory function during levodopa “on” periods compared to controls.
Clinical relevance
Knowledge that PD is associated with impaired masticatory function is important to dental professionals in decision making related to prosthetics and general dental treatment.
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Acknowledgments
This study was supported by the National Council of Technological and Scientific Development (CNPq, grant number 48.090.3/2013-1) and São Paulo Research Foundation (FAPESP, grant number 2012/15223-2), Brazil. The authors thank Felipe Nogueira Anacleto and Guilherme Henrique Costa Oliveira from the Piracicaba Dental School, University of Campinas, São Paulo, Brazil, for their assistance with endodontic and periodontal treatments.
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This study was supported by the National Council of Technological and Scientific Development (CNPq, grant number 48.090.3/2013–1) and São Paulo Research Foundation (FAPESP, grant number 2012/15223–2), Brazil.
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The authors declare that they have no conflict of interest.
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All procedures in this research were performed in accordance with the ethical standards of the Ethics Committee of Piracicaba dental School, University of Campinas and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards.
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Informed consent was obtained from all individual participants included in the study.
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Ribeiro, G.R., Campos, C.H. & Rodrigues Garcia, R.C.M. Parkinson’s disease impairs masticatory function. Clin Oral Invest 21, 1149–1156 (2017). https://doi.org/10.1007/s00784-016-1879-z
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DOI: https://doi.org/10.1007/s00784-016-1879-z