Impact of Breather Device on Ventilatory Effort in Patient With MTMD

investigate the effect of the breather device on ventilatory effort and in patients with myogenic temporomandibular joint disorders

"-Therapeutic Ultrasound (US): Ultrasound therapy will be applied at the site of pain over the TMJ area with Frequency: 1 MHz, Mode: continuous, Duration: 6 min. each session 2-Myofascial release for masticatory muscles 3-The self-exercise Self exercise: include simplified myo-functional therapy. 10 repetitions, three: five times per day 4-Techniques to correct deglutition: swallowing a small amount of water and speaking while holding a semi-hard small object between the dental arches 5-Relaxation exercise of Masticator Muscle:10 repetitions, three.~6-Strain-counterstain (SCS): applied on the tender or trigger points of neck muscles on improving pain and pressure pain sensitivity in neck muscles"