ETIOLOGY OF DENTAL CARIES
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32 Terms
Legend of Worm
Chemical Theory (Acid Theory)
Parasitic or Septic Theory
Enumerate Exogenous Theories
Humoral Theory
Vital Theory
Enumerate Endogenous Theory
5000 BC
The Worm theory dates back as far as _____ referenced in a Summerian Text
Worm Theory
They believed tooth worm hole through your teeth and hid beneath the surface; drank blood of teeth and fed on roots of jaws
Robertson 1835
Opined that caries was caused by chemical disintegration of the tooth
Chemical Theory (Acid Theory)
It was believed that putrefaction of protein led to formation of ammonia which was subsequently oxidized to nitric acid
Robertson 1835
Person under Chemical Theory
Erdl and Ficinus 1843
Person/s under Parasitic or Septic Theory
Erdl and Ficinus 1843
founded filamentous microorganisms caused decomposition of the teeth
Ficinus
He recognized the first organic matrix in enamel
Parasitic or Septic Theory
Filamentous microorganisms caused decomposition of the teeth
Blood
Phlegm
Black bile
Yellow Bile
Four elemental fluid (humors) of the body
Humoral Theory
Imbalance in this 4 humors determines the person’s physical and mental constitutions
Physical and Mental constitutions
Imbalance in this 4 humors determines the person’s ____ and _____ ______
Vital Theory
Proposed by Hippocrates, Celsus, Galen and Auicenna
Hippocrates, Celsus, Galen, and Auicenna
Who proposed Vital Theory?
18th Century
Date of Vital Theory
Vital Theory
Postulated that tooth decay originated like bone gangrene from within the tooth itself
Bone Gangrene
Vital Theory postulated that tooth decay originated like ______ from within the tooth itself
Chemico-parasitic Theory
The theory said that caries is caused by acids produced by oral bacteria following fermentation of sugar
Decalcification of enamel, destruction of dentin (preliminary stage
Dissolution of softened residue of enamel and dentin (subsequent stage)
2 Stages of Chemico-parasitic Theory
Preliminary Stage
Decalcification of enamel, destruction of dentin
Subsequent Stage
Dissolution of softened residue of enamel and dentin
Susceptible host - Fermentable carbohydrate - acid production - Demineralization - Plaque
Process of W.D. Miller and his “chemico-parasitic theory”