Dental caries.

• From prehistoric times to now a days dental caries are the most common chronic disease in the world.
• Prevalence of this disease has gently increased in modern times on a world,while basis,an increase strongly associated with diet changes.

Epidemiology/prevalence                                               

• Dental caries most commonly known as taste decay or cavities is infectious or transmissible ,diet mediated disease.
• In US it is 5 times more common than asthma,and 7 times more common than hay fever.
• Children are most commonly affected .
• It increase with age . 
• Children from poor families have higher rate of caries compared to higher income families .

   

Causes and how it spread .

• Bacteria.,fermentable carbohydrates(particularly sucrose), dental plaque .
  
  
  

Prevention.

• • Firstly must visit to your nearby dentist in every 3–6 months.
  • Brushing properly 2 times a day .
  • Rinse your mouth in 3 times a day for at least 1 min.
  • Use floride contain tooth paste as directed by your dentist .
  • Reduce frequent consumption of sugar or sticky food.