Author Topic: PLAQUE AND CAVITIES  (Read 787 times)

Offline shahina

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« on: March 09, 2015, 10:34:55 AM »

We have lot of bacterias in our mouth which is a normal thing. While some of the bacteria can be harmful, most are not and some are even helpful.

Certain types of bacteria, however, can attach themselves to hard surfaces like the enamel that covers teeth. If they’re not removed, they multiply and grow in number until a colony forms. More bacteria of different types attach to the colony already growing on the tooth enamel. Proteins that are present in saliva (spit) also mix in and the bacteria colony becomes a whitish film on the tooth.This film is called plaque, and it’s what causes cavities.

The plaque that forms on  teeth and doesn’t get washed away by saliva or brushed away by toothbrush produces acid as it eats up sugar. This acid is produced inside the plaque and can’t be easily washed away by saliva. The acid dissolves the minerals that make tooth enamel hard. The surface of the enamel becomes porous – tiny holes appear. After a while, the acid causes the tiny holes in the enamel to get bigger until one large hole appears. This is a cavity.
Be gentle and you can be bold but also let people feel, the steadiness of your resentment;
be frugal and you can be liberal;
avoid putting yourself before others and you can become a leader among men.

Shahina Haque
Assistant Professor
Department of ETE

Offline Saba Fatema

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« Reply #1 on: May 11, 2015, 03:37:11 PM »
Thanks for sharing.
Saba Fatema
Senior Lecturer
Department of GED