Cariology 1: History part Flashcards
What are the exogenous theories of caries?
Worm theory
Chemical (acid) theory
Parasitic (septic) theory
What are the endogenous theories of caries?
Humoral theory
Vital theory
What are theories of dental caries that aren’t either endogenous nor exogenous?
The acidogenic theory
The proteolytic theory
Proteolysis chelation theory
Sucrose chelation theory
The current theory is demineralisation + Remineralisation
What is worm theory?
in Ancient sumerian text (5000 BC) describes a worm that drunk the blood of the teeth and fed on the roots of the jaws.
What is humoral theory?
A theory believed in ancient greece where a person’s physical and mental constitution was determined by the relative proportions of the four elemental fluids of the body which correspond to humours.
What was hippocrates’ observation regarding dental caries?
Hippocrates, ‘the father of medicine’, favoured the concept of humoral pathology also referred to the accumulated
debris around teeth and to their corroding action.
He also stated that stagnation of juices in the teeth was the cause of toothache.
What is chemical theory of dental caries?
The concept that acids formed in the oral cavity destroy teeth.
According to this theory, teeth are destroyed by the acids formed in the oral cavity by putrefaction of protein which produces ammonia
Did chemical theory believe in the possibility of microorganism activity?
No fermentation was thought to be strictly non-vital
The possibility that microorganisms were involved was yet to be recognized.
What is the parasitic theory of tooth decay?
Micro-organisms associated with carious process.
Filamentous parasites in the surface membrane of teeth
Microorganisms can have toxic and destructive effects on tissue
What is the proteolytic theory of dental disease?
Carious lesions are initiated by proteolytic activity at a slightly alkaline pH and considered that the process involved depolymerization and liquefaction of the organic enamel matrix.
