 Background: According to the International Association for the Study of Pain IASP, the term temporomandibular disorder TMD regards a subgroup of orofacial pain, the symptoms of which include pain or discomfort in the temporomandibular joint, ears, masticatory muscles and neck on one or both sides as well as joint sounds, limited mandibular movements or mandibular deviation and difficulties chewing. Phototherapy, such as low level laser therapy LLLT and light-emitting diode LED therapy, is one of the resources used to treatment muscle pain. Thus, there is a need to investigate therapeutic resources that combine different wavelengths as well as different light sources LLLT and LED in the same apparatus. 