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Abstract
The objective of this study was to analyze the electromyographic (EMG) data, before and after normalization. One hundred (100) normal subjects (with no signs and symptoms of temporomandibular disorders) participated in this study. A surface EMG of the masticatory muscles was performed. Two different tests were performed: maximum voluntary clench (MVC) on cotton rolls and MVC in intercuspal position. The normalization was done using the mean value of the EMG signal of the first examination. The coefficient of variation CV showed lower values for the standardized data. The standardization was effective in reducing the differences between records from the same subject and in different subjects.
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Notes on contributors
André Luís Botelho
Dr. André Luís Botelho received his D.D.S. degree from the Faculty of Dentistry of Ribeirão Preto, University of São Paulo (FORP-USP) in 2006 and his master’s degree in Restorative Dentistry from FORP-USP in 2008. Currently, he is pursuing a Ph.D. degree at the Department of Restorative Dentistry, FORP-USP, Brazil and is a student of the UNIALA program at the Department of Human Morphology and Biomedical Sciences “città studi,” Università degli Studi di Milano, Milan, Italy.
Flávio Henrique Umeda Gentil
Dr. Flávio Henrique Umeda Gentil received his D.D.S. degree from the Faculty of Dentistry of Ribeirão Preto, University of São Paulo in 2006. Currently, he is pursuing a master's degree at the Department of Restorative Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo, Brazil.
Chiarella Sforza
Dr. Chiarella Sforza received her M.D. degree from the University of Milan, Italy in 1986 and her Ph.D. degree in sports medicine in 1989 from the same University. She is a professor of human anatomy at the Medical and Dental School of Milan University, and Director of the Laboratory of Functional Anatomy of the Stomatognathic Apparatus (Dept. Human Morphology and Biomedical Sciences "Città Studi," University of Milan). She has been involved in research on the functional anatomy of the stomatognathic apparatus and on the anatomical bases of stomatognathic function and dysfunction. She has authored/coauthored 210 publications indexed in PubMed.
Marco Antonio Moreira Rodrigues da Silva
Dr. Marco Antonio Moreira Rodrigues da Silva received his D.D.S. degree in 1974 and a Ph.D. in oral rehabilitation in 1991 from the Faculty of Dentistry of Ribeirão Preto, University of São Paulo. He is a professor at the Department of Restorative Dentistry of the Faculty of Dentistry of Ribeirão Preto, University of São Paulo, Brazil and a specialist in TMD and orofacial pain, recognized by the Federal Council of Dentistry.