kinds of teeth

[mohamed refaay]

The teeth have the most important role and the hardest structure in human's jaws and many other spinescent animals. The main function of the teeth is cutting and grinding the food pieces. Further more, they help us in speaking properly.
Two kinds of teeth grow during every human's life cycle:
1-primary teeth.
2-permanent teeth .

primary teeth:


The first teeth which are shed and replaced by permanent teeth.the first teeth begin to break through the gums at about 6 months of age. Usually, the first two teeth to erupt are the two bottom central incisors (the two bottom front teeth). Next, the top four front teeth emerge. After that, other teeth...... more

[ppyo]

Hello, Mohamed. i read your previous posts and this is really helpful and informative. Thank you for the effort to write all this.