Temporomandibular dysfunction (TMD) is considered to be associated with imbalance of the whole body. This study aimed to evaluate the influence of TMD
therapy on cervical spine range of movement (ROM) and reduction of spinal
pain. The study group consisted of 60 patients with TMD, cervical spine
pain, and limited cervical spine range of movements. Subjects were interviewed by a questionnaire about symptoms of TMD and
neck pain and had also masticatory motor system physically examined (according to RDC-TMD) and analysed by JMA ultrasound device. The cervical spine motion was analysed using an MCS device. Subjects were randomly admitted to two groups, treated and control. Patients from the treated group were treated with an
occlusal splint. Patients from control group were ordered to self-control parafunctional habits. Subsequent examinations were planned in both groups 3 weeks and 3 months
after treatment was introduced. The results of tests performed 3 months after the beginning of
occlusal splint therapy showed a significant improvement in TMJ function (P > 0.05), cervical spine ROM, and a reduction of spinal
pain. The conclusion is that there is a significant association between TMD treatment and reduction of cervical spine
pain, as far as improvement of cervical spine mobility.