Evaluation of the Effect of Dextrose Prolotherapy Versus Dry Needling Therapy for the Treatment of Temporomandibular Joint Anterior Disc Displacement With Reduction (A Randomized Controlled Trial)

The Temporomandibular joint (TMJ) represents the most complex synovial articulation in the human body, with its articular disc enclosed between the articular tubercle's slope and the convexity of the mandibular condyle.

Although the Magnetic resonance interpretation of the normal discal position defines the posterior discal band atop the highest convexity of the mandibular condyle, at a 12 o'clock position, this discal disposal is altered in almost 30% of the population without physical signs. Which rendered the treatment of the discal displacement mainly dependent on alleviating the signs and symptoms rather than restoring the anatomical disc position.

Various non-invasive therapeutic modalities are utilized for relieving the signs and symptoms of anterior discal displacement, including physical therapy, exercises, ischemic compression, heat therapy, acupuncture, dry needling, wet needling injections with different agents, and pharmacological treatments.

Among those, the trigger point injection is an effective modality, with or without the injection of saline or ringer's solutions, hyaluronic acid, corticosteroids, local anesthetics, botulinum toxin, platelet-rich plasma, or hypertonic dextrose The current study aims to design a randomized controlled trial that compares the effect of injecting 12.5 % of dextrose solution intraarticular and into the myofascial trigger points versus the dry needling of the same sites on alleviating the clinical signs and symptoms of (TMJ) disc displacement with reduction.