Periodontal disease is gum disease. The word Â“periodontalÂ” means Â“around the tooth.Â” Periodontal disease is a chronic inflammatory disease of the gum and tissues that surround and support the teeth. If left untreated, periodontal disease can lead to tooth loss. Symptoms of periodontal disease include red and swollen gums, persistent bad breath, and receding gums and loose teeth. Smoking, certain illnesses (such as diabetes), older age, and other factors increase the risk for periodontal disease.
Scientific journal is a periodical publication intended to further progress of science, usually by reporting novel research. There are thousands of scientific journals in publication, and many more have been published at various points in the past. Most journals are highly specialized, although some of the oldest journals publish articles and scientific papers across a wide range of scientific fields. Scientific journals contain articles that are peer reviewed, to ensure that articles meet the journal's standards of quality, and scientific validity. The publication of the results of research is an essential part of the scientific method. If they are describing experiments or calculations, they must supply enough details that an independent researcher could repeat the experiment or calculation to verify the results. Each such journal article becomes part of the permanent scientific record.
Last date updated on July, 2014