الفهرس 
Introduction
Aim of the workOnly 14 pages are availabe for public view
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Abstract
1 The thickness of the masseter muscle is increased in TMD associated with myofascial pain patients than in normal individuals during rest and contraction conditions. 2 The thickness of the masseter muscle during contraction is greater than that during rest in normal and in patients suffering from TMD associated with myofascial pain. 3 The use of ultrasonography could be a useful tool for the diagnosis of TMD associated with myofascial pain through measuring the thickness of the masseter muscle. 4 Decrease of the thickness (diameter) of the masseter muscle is an evidence of effectiveness of the splint. 5 The soft splint is more effective and superior than hard splint in decreasing masseter muscle thickness in short treatment periods (during the first month). 6 Treatment with anterior repositioning splint is an effective treatment modality but needs more time (six months).