title: Characteristics of TMD noise analyzed by electrovibratography.
abstract: Studying joint noise is an important parameter for diagnosing temporomandibular dysfunction. In this study, eight groups (n=9) were formed according to joint dysfunction classification, provided by employing vibration analysis equipment. Parameters for analyzing joint noise were: total vibration energy, peak amplitude, and peak frequency. Mouth opening range was also analyzed. Statistical analysis results for each parameter were significant at 1%. Each analyzed group presented different noise characteristics. This allowed for inclusion of the groups within a determined value category. The patient group with normal condyle/disk relationship always presented the lowest values. The type of joint noise was characterized by analyzing total integral noise, peak amplitude, peak frequency, and mouth opening. Analyzing joint noise using electrovibratography suggests the type of joint dysfunction and may help to establish a diagnosis, as well as a treatment plan.
authors.affiliation: Faculty of Dentistry of Ribeirão Preto, University of São Paulo, Brazil. mazzetto@forp.usp.br
authors.forename: Marcelo Oliveira
authors.initials: MO
authors.lastname: Mazzetto
authors.forename: Takami Hirono
authors.initials: TH
authors.lastname: Hotta
authors.forename: Thaise Graciele
authors.initials: TG
authors.lastname: Carrasco
authors.forename: Rafaela Galli
authors.initials: RG
authors.lastname: Mazzetto
mesh_terms: D004568:Electrodiagnosis / Q000379:methods*; D006801:Humans; D004204:Joint Dislocations / Q000145:classification / Q000175:diagnosis; D008335:Mandibular Condyle / Q000503:physiopathology; D010003:Osteoarthritis / Q000145:classification / Q000175:diagnosis; D016059:Range of Motion, Articular / Q000502:physiology; D012815:Signal Processing, Computer-Assisted; D013016:Sound; D019224:Temporomandibular Joint Disc / Q000503:physiopathology; D013705:Temporomandibular Joint Disorders / Q000145:classification / Q000175:diagnosis*; D014732:Vibration