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Reproducibility of temporomandibular joint vibrations (electrovibratography)
Author(s) -
CHRISTENSEN L.V.,
ORLOFF J
Publication year - 1992
Publication title -
journal of oral rehabilitation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.991
H-Index - 93
eISSN - 1365-2842
pISSN - 0305-182X
DOI - 10.1111/j.1365-2842.1992.tb01100.x
Subject(s) - temporomandibular joint , reproducibility , intraclass correlation , medicine , orthodontics , dentistry , mathematics , statistics
Summary Surface electrovibratographic (EVG) recordings were obtained from the temporomandibular joints (TMJ) of clinically normal subjects (absence of TMJ sounds) and clinically abnormal subjects (presence of TMJ sounds). As examined through single factor analyses of variance and coefficients of intraclass correlation, the EVG recordings showed excellent reproducibility. The analyses showed also that, in comparison with clinically normal TMJs, the vibrations of clinically abnormal TMJs had higher median (+79%) and peak (+ 137%) frequencies, higher peak amplitudes (+ 740%), and higher intensities as expressed through the estimated total energy contents (+ 1843%) and the integrals (+ 1215%) of power spectrum density functions.