Dental Caries

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Dental Caries

Etiology

4)Time

3)Cariogenic bacteria

Adhesiveness

Form intra&extracellular polysaccharides

Acidouric

Acidogenic

2)Substrate

Refinement of CHO

Local effect of CHO

Texture of CHO

Frequency of CHO

Amount of CHO

Type of CHO

1)Host factors

saliva

Antibacterial effect

Buffering capacity

Salivary glycoproteins

Washing effect

Susceptible tooth

Genetic factors

Fluorides

Structure

Morphology

Position

Types Of Caries

According to progression rate

1; rumpant caries 2;acute caries 3; chronic caries 4;arrested caries

According to extent

1;primary caries 2; secomdary caries

According to stage

1;spot 2;enamel caries 3; dentin caries 4; deep dentin caries

According to site

1;pits and fissure caries 2;smooth surface caries 3; root caries

Dental plaque formation

Mature community

Intermediate community

Initial community

Definition

Localized microbial disease affecting post eruptive tooth by demineralizing its inorganic content and destruction of its organic content.

Pathology of dental caries

Microscopic appearance

Histopathology of DENTIN caries

Superficial zone

Infected lesion

Liquefaction foci and transverse clefts

Beading

Bioneers

Uninfected lesion

Zone of hypomineralization

Zone of hypermineralization

Zone of fatty degeneration

Histopathology of ENAMEL caries

Phase of secondary enamel caries

Phase of destruction

Phase of bacterial invasion

Phase of initiation

Macroscopic appearance

White chalky spot Then becomes Brown spot