Although previous literature has evaluated myofascial tenderness, none have quantified and associated the level of tenderness with jaw dysfunction. Considering these things the authors of the current study sought to determine the correlation, if any, between neck disability, jaw dysfunction and muscle tenderness in patients with and without chronic TMD.
Twenty healthy females and twenty females diagnosed with chronic TMD (at least 3 months duration) participated in this study. Each participant completed a neck disability index (NDI) and limitations of daily function in TMD questionnaire. An algometer was used to quantify tenderness in muscles of mastication and cervical muscles