Prefrontal Hemodynamic Changes Associated with Subjective Sense of Occlusal Discomfort

Table 1

Participant profiles and VAS scores.

Perceived discomfort	Age	Sex	Chewing side	dVAS						Total (tdVAS)
				Too high	Jitteriness	Difficulty in chewing	Unstable IP	Uneven contact	Tooth pain
(a) NIRS experiment
Severe	29	F	L	77	81	76	81	84	15	414
	27	M	R	32	66	53	40	100	54	345
	29	F	R	43	64	32	58	35	14	246
Moderate	39	F	L	34	35	36	37	56	22	220
	24	F	R	37	−8	38	46	45	15	173
	28	F	L	32	57	1	14	60	0	164
	34	F	R	24	16	15	37	36	36	164
	24	M	R	2	33	15	14	33	32	129
	26	M	R	31	19	9	33	36	0	128
	26	M	L	28	11	12	22	29	16	118
	25	F	L	33	3	25	26	27	0	114
	22	F	R	19	20	20	34	17	2	112
	33	M	R	26	16	14	29	20	0	105
Mild–none	31	M	R	23	16	21	18	17	−18	77
	31	M	R	23	0	0	24	22	0	69
	27	F	R	14	13	13	13	13	0	66
	24	M	R	4	4	5	5	3	4	25
	26	M	L	11	12	0	0	0	0	23
	26	M	L	6	0	6	0	0	0	12
	24	F	L	0	3	0	0	0	0	3
	29	M	R	−1	−2	−7	5	6	0	1
	24	M	R	0	0	0	0	−6	0	−6
	41	M	R	6	−11	−26	2	1	−1	−29
Comfortable	38	M	R	−33	−31	−29	−32	−41	−17	−183
	36	F	L	−49	−67	−70	−70	−49	−1	−306
Mean	28.9			16.9	14.0	10.4	17.4	21.8	6.9	87.4
SE	1.0			4.9	6.2	5.6	5.8	6.6	3.2	29.4
(b) EMG experiment
	30	M	R	42	26	33	54	58	7	220
	28	F	L	24	24	23	23	24	6	124
	26	M	L	33	5	24	25	24	0	111
	34	F	R	15	3	6	11	16	21	72
	25	M	R	2	36	−1	−2	13	6	54
	34	F	L	5	10	0	3	12	0	30
Mean	29.5			20.2	17.3	14.2	19.0	24.5	6.7	101.8
SE	1.6			6.4	5.4	5.9	8.2	7.0	3.1	27.6