HOST

1. Enamel crystal structure
2. Enamel minerals Ca, P, F

 The caries development depends on:

• Saliva quantity and quality
• Immune response
• Host behavior

MAJOR ODONTO PATHOGENS

• Streptococcus mutens
• Streptococcus sobrinus
• Lectobaccili casei
• Lectobaccili planarum
• Lectobaccili acidophilus

BACTERIA ASSOCIATED WITH CARIES:

• Streptococcus mutens
• Actenmyces odontophyls

         TEETH PROTECTION SALIVA

1. Washes the teeth
2. Enzymes that interfear bacteria
3. Buffer system Bicarbonate
4. Inorganic minerals Ca, P, F
5. Minerals activate remineralization
6. Ig A

HIGH RISK GROUP AND FACTORS

• < 18 years >65 years
• Low social economic population
• Disease related with hyposalivation and difficult in self care
• Low fluoride content in drinking water
• Frequent consumption of sacharids
• Frequent caries in family
• Deep grooves and fissures
• Tight contact between teeth
• High concentration of streptococcus mutans
• Many restoration surfaces and poor restorations
• Bad hygiene
• Plaque