A case-control study about bite force, symptoms and signs of temporomandibular disorders in patients with idiopathic musculoskeletal pain syndromes

Table 3 Temporomandibular Disorders (TMD) symptoms and signs and bite force measurement of the two patients groups and controls

	Controls	Fibromyalgia	p	Pain Amplification Syndrome	p
TOTAL (n)	20	12		28
TMD symptoms (%)	3 (15.0)	9(75)	0.001*	16(57.1)	0.003*
Pain on palpation(%)	6 (30.0)	12(100)	0.0001*	24(85.7)	0.0001*
Pain on function(%)	4 (20.0)	6(50)	0.102	10(35.7)	0.252
Bite force (mean) in N
Anterior	143.3	154.6	0.629	133.3	0.527
Right side	313.2	344.9	0.377	334.9	0.479
Left side	314.7	343.7	0.444	357	0.157