Theories of dental caries pdf

The term is apt in that the clinical picture of a carious lesion is that of decaying tissue. Theories of dental caries rubab haider final year bds fmh college of med and. Theories of dental caries by dr prerna shrivastava career hub medical institute bhopal,tooth caries duration. Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. The systemic theory of dental caries clinton dentistry.

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. Scribd is the worlds largest social reading and publishing site. Pdf dental caries is a biofilmmediated, sugardriven, multifactorial, dynamic disease that results in the phasic demineralization and. Parmly 1819 proposed that an unidentified chymical agent was responsible for caries. 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. 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. 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. In the past, dental caries was thought to be caused by living worms inside the tooth structure. Endogenous theories includes 1 humoral theory according to which an imbalance between the humors of body caused tooth decay. 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. According to this theory, dental caries results from an initial bacterial and enzymatic proteolytic action on the organic matter of enamel without preliminary demineralization.

Genetic and peripheral factors lead to variations in the oral microbiome. It is the destruction of dental hard acellular tissue by acidic byproducts from the bacterial fermentation of dietary carbohydrates especially sucrose. The former is due to acids in the oral environment. Theories of dental caries rubab haider final year bds fmh college of med and dentistry lahore. Get a printable copy pdf file of the complete article 572k, or click on a. 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. Following are some of the causes that is believed to cause dental caries chemical acid theory. The most generally accepted theory as to the cause of dental caries is that certain. Physicians may help reduce the incidence of caries by recommending elimination of refined sugars from the diet. Dental caries progressive initially subsurface demineralization of teeth by.