3.  Dental caries :  Its process take place when the microbial biofilm “dental plaque” is allowed.  Biofilm contain more than 300 bacterial species and its always metabolically active causing dropping in oral PH by production of acid.lead to loss of tooth meniral”demenirazation”

12.  Bacteria fermenting dietary carbohydrate substrate “sucrose,glocose”to produce acid causing dropping in PH within 1-3 min, the buffering capacity of the saliva return the PH to normal in 30-60 min, because its saturated by Ca and phosphate ions.

13.  Enamel pits and fissures “common in young age group”  Proximal enamel surface  Cervical on gingival margin spatially when there are recession “common in elderly”  Margin of restoration “least common”

17.  Pts caries risk category ^.  Pts involvement:  Plaque control  Dietary modification  Fluoride usage  Salivary stimulation  Pts cooperation.

18.  Mechanical plaque control:  Tooth brushing,fluoride tooth paste that will prevent and also arrest the lesion.  Improve tooth brushing technique.  Regular recall visit to dental clinic.

19.  Fluoride tooth past 22%-.o312%, 100g tooth past contain.076g-0.01g fluoride  Fluoride mouth rinse 0.05% sodium fluoride  Fluoride varnish 5%sodium fluoride easy in use,acceptable to pt,and adhere to tooth surface.  Gel and foam by using disposable try for 4min  Supplement tablet in schools, water fluoridation.

20.  Diet sheet  Control sugar intake  Salivary flow:  Xylitol chewing gum lead to salivary stimulation.

21.  Thank you.  Dr.tagwa marghani