Digestive System Teeth

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by ELMCu1
Last updated 6 years ago

Human Anatomy

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Digestive System Teeth

Digestive System Teeth

Premolar and Molar:Crushing and chewing

Canine: For holding and cutting

Incisor:For biting and cutting

Food is broken down into smaller pieces in the mouthby chewing. This is an example of mechanical digestion

The teeth cut and crush food, and the pieces are mixed with saliva to form a ball of food called a bolus

Tooth decay happens when the hard outer enamel of the tooth is damaged. This can happen when bacteria in the mouth convert sugars into acids that react with the enamel. Bacteria can then enter the softer dentine inside.

Tooth Decay

Tooth decay can be prevented by...

Regular, effective brushing to prevent the build-up of plaque (a sticky layer on the teeth)

Using toothpaste and drinking water containing fluoride

Avoiding foods with a high sugar content

Fluoride reduces tooth decay by..

Helping to replace calcium ions and phosphate ions lost by tooth enamel because of acid attack

Reducing the ability of bacteria on plaque to produce acid


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