Clinical TMD conditions, pain-related disability and psychological status in a Hispanic population sample from western New York
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Temporomandibular Disorders (TMDs) has not been assessed in the Hispanic population due to the lack of an instrument in the native language. The aims of this study were: (1) to test the equivalence of the Spanish version of the Research Diagnostic Criteria (S-RDC/TMD); (2) to evaluate the TMD conditions (Axis I), pain-related disability and psychological status (Axis II) in Hispanics from WNY; (3) to compare Axis I and II between Hispanics and non-Hispanics. To establish the reliability of the S-RDC/TMD, a cross-over single-group design was used in 28 bilinguals. The field-testing was assessed in 63 Hispanics and 36 non-Hispanics participated for inter-ethnic comparisons. The linguistic concordance was acceptable to excellent in 94% of the items. Both ethnic groups had a high prevalence of myofascial pain, in contrast to disc displacement and arthritic conditions. Hispanics with TMDs presented severe levels of depression, somatization and low pain-related disability. It was concluded that the S-RDC/TMD is culturally equivalent and it can be used reliably.