Chronic periodontitis affects about 750 million people or about 10.8% of the world population as of 2010.Like other conditions intimately related to access to hygiene and basic medical monitoring and care, periodontitis tends to be more common in economically disadvantaged populations or regions. Its occurrence decreases with a higher standard of living. In Israeli population, individuals of Yemenite, North-African, South Asian, or Mediterranean origin have higher prevalence of periodontal disease than individuals from European descent. Periodontitis is frequently reported to be socially patterned, i.e. people from the lower end of the socioeconomic scale are affected more often than people from the upper end of the socioeconomic scale. History
An ancient hominid from 3 million years ago had gum disease. Records from China and the Middle East, along with archaeological studies, show that mankind has had Periodontal disease for at least many thousands of years. In Europe and the Middle East archaeological research looking at ancient plaque DNA, shows that in the ancient hunter-gatherer lifestyle there was less gum disease, but that it became more common when more cereals were eaten. The Otzi Iceman was shown to have had severe gum disease. Furthermore, research has shown that in the Roman era in the UK, there was less periodontal disease than in modern times. The researchers suggest that smoking may be a key to this. Society and culture
Etymology
The word "periodontitis" (Greek: περιοδοντίτις) comes from the Greek peri, "around", odous (GEN odontos), "tooth", and the suffix -itis, in medical terminology "inflammation".
Nevus spilus, also known as speckled lentiginous nevus, is a light brown or tan birth mark, speckled with small, dark spots or small bumps. If it occurs in a segmental pattern then it is sometimes referred to as a Zosteriform speckled lentiginous nevus.It may be associated with types of phakomatosis pigmentovascularis.Prevalence is between 0.2% and 2.8%. See also
Phakomatosis pigmentokeratotica
Skin lesion
List of cutaneous conditions

References


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