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It is one of the most common dental anomalies, and can have a negative impact on function, and also appearance. It rarely occurs in primary teeth (also known as deciduous, milk, first and baby teeth) and the most commonly affected are the adult second premolars and the upper lateral incisors .
This may or may not be due to dental caries, periodontal disease (gum disease), trauma or other pathology of the face and mouth (i.e. cysts, tumours). [5] In those under 45 years of age, dental caries is considered to be the main cause of toothlessness, whereas periodontal disease is the primary cause of tooth loss in older age groups. [6]
Tooth loss is normal for deciduous teeth (baby teeth), when they are replaced by a person's adult teeth. Otherwise, losing teeth is undesirable and is the result of injury or disease, such as dental avulsion, tooth decay, and gum disease. The condition of being toothless or missing one or more teeth is called edentulism. Tooth loss has been ...
Gum disease is the most common oral disease, with studies estimating that up to 80% of Americans have dealt with periodontal disease at some point during their lives. The prevalence of gum disease ...
Gingivitis is a non-destructive disease that causes inflammation of the gums; [1] ulitis is an alternative term. [2] The most common form of gingivitis, and the most common form of periodontal disease overall, is in response to bacterial biofilms (also called plaque) that are attached to tooth surfaces, termed plaque-induced gingivitis.
“The number of teeth varied through the mutation of just one gene,” he said. “If we make that the target of our research, there should be a way to change the number of teeth (people have).”
A 1930s poster from the Work Projects Administration promoting oral hygiene. Tooth decay is the most common global disease. [14] Over 80% of cavities occur inside fissures in teeth where brushing cannot reach food left trapped after eating and saliva and fluoride have no access to neutralize acid and remineralize demineralized teeth, unlike easy-to-clean parts of the tooth, where fewer ...
Anodontia is the congenital absence of teeth and can occur in some or all teeth; whereas partial anodontia (or hypodontia), involves two dentitions or only teeth of the permanent dentition (Dorland's 1998). Approximately 0.08-0.25% of the population has oligodontia. [1]