For example, in the United States, one report estimated that 22% of the general population had suffered from some form of facial pain at some point in the 6-month period before questioning, of which 12% was toothache.[15] In the United Kingdom, 7% of the general population reported having some degree of chronic orofacial pain.[16] Other reports indicate a prevalence of 10–15% for TMD in the general population.[16]