Dental caries is a process which occurs on any tooth surface in the oral cavity where dental plaque is allowed to develop over a period of time. Worms according to an ancient sumerian text, tooth ache was caused by a worm that drank the blood of the teeth and fed on the roots of the jaws. According to this theory, teeth are destroyed by the acids formed in the oral cavity by the putrefaction of protein which produced ammonia and was subsequently oxidized to nitric. There is evidence to demonstrate that dental caries occurs when the body can no longer control the inflammatory process within the tooth. The most generally accepted theory as to the cause of dental caries is that certain. Parmly 1819 proposed that an unidentified chymical agent was responsible for caries. Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Theories of dental caries rubab haider final year bds fmh college of med and. Endogenous theories includes 1 humoral theory according to which an imbalance between the humors of body caused tooth decay. Theories of dental caries rubab haider final year bds fmh college of med and dentistry lahore. The most generally accepted theory as to the cause of dental caries is that certain bacteria in the mouth, in the presence of fermentable sugars, cause the formation of acids which in turn decalcify teeth. It is the destruction of dental hard acellular tissue by acidic byproducts from the bacterial fermentation of dietary carbohydrates especially sucrose. Following are some of the causes that is believed to cause dental caries chemical acid theory. Dental caries is caused by plaques, which are a community of microorganisms in biofilm format.
Other theories which held sway at different times were the humoral theory of galen and the worm theory of. The systemic theory of dental caries clinton dentistry. Physicians may help reduce the incidence of caries by recommending elimination of refined sugars from the diet. The belief that tooth decay is due to acid decalcification has dominated thinking and research on caries for almost a cen tury, but is still unproved. The former is due to acids in the oral environment. The term is apt in that the clinical picture of a carious lesion is that of decaying tissue. Scribd is the worlds largest social reading and publishing site.
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