Table 4.

Comparison of the control and bruxism groups for dental and radiographic examinations (Chi-square)

		Control		Bruxism		p
Dental examination		n	%	n	%
Sensitivity in cold test	No pain (a)	105	50.0	85	40.5	0.001* a-c a-d b-d
	Mild pain (b)	93	44.3	89	42.4
	Moderate pain (c)	10	4.8	24	11.4
	Severe pain (d)	2	1.0	12	5.7
Percussion sensitivity	No	206	98.1	184	87.6	0.000*
	Yes	4	1.9	26	12.4
Tooth wear level	0(a)	204	97.1	130	61.9	0.000* a-b a-c a-d
	1(b)	6	2.9	41	19.5
	2(c)	0	0.0	24	11.4
	3(d)	0	0.0	14	6.7
	4(e)	0	0.0	1	0.5
Sensitivity to probing the cervical area	No	194	92.4	178	84.8	0.021*
	Yes	16	7.6	32	15.2
Radiographic examination
Periodontal ligament space widening	No	208	99.0	155	73.8	0.000*
	Yes	2	1.0	55	26.2
Bone loss	No	171	81.4	131	62.4	0.000*
	Yes	39	18.6	79	37.6
Changes in lamina dura	No (a)	209	99.5	106	50.5	0.000* a-b a-c
	Loss (b)	1	0.5	63	30.0
	Thickening (c)	0	0.0	41	19.5
Triangulation	No	193	91.9	177	84.3	0.016*
	Yes	17	8.1	33	15.7
Periapical lesion	No	210	100.0	203	96.7	0.015*
	Yes	0	0.0	7	3.3

Each level was symbolized with a letter for levels of sensitivity in cold test, tooth wear and changes in lamina dura. Significant difference was shown between the letters given after the p-value