Table 4 -. Relationship between the answers.

	Answer	Have you ever used orthodontic appliances to treat TMD symptoms?
		No	Yes	Total
Orthodontics is the best treatment option for TMD patients with skeletal malocclusion.*	Disagree	76	66	142
	Agree	3	18	21
	No opinion	4	6	10
	Total	83	90	173
Orthodontic treatment can prevent the onset of TMD.**	Agree	60	43	103
	Disagree	19	46	65
	No opinion	4	1	5
	Total	83	90	173
Orthodontic treatment can lead to TMD.***	Agree	47	29	76
	Disagree	31	59	90
	No opinion	5	2	7
	Total	83	90	173

^* P = 0.003;

^** P = 0.000;

^*** P = 0.001.