Its always necessary keep your teeth clean

# 07/05/2013 à 03:42 DeesteTak
A tooth (plural teeth) is a undersized, calcified, whitish order start in the jaws (or mouths) of innumerable vertebrates and worn to break down food. Some animals, strikingly carnivores, also partake of teeth for hunting or owing defensive purposes. The roots of teeth are covered by gums. Teeth are not made of bone, but rather of multiple tissues of varying density and hardness.

The unrestricted structure of teeth is nearly the same across the vertebrates, although there is considerable modulation in their form and position. The teeth of mammals be struck by esoteric roots, and this decoration is also create in some fish, and in crocodilians. In most teleost fish, how, the teeth are partial to to the outer outwardly of the bone, while in lizards they are fixed devoted to to the inner come up of the jaw during the same side. In cartilaginous fish, such as sharks, the teeth are unavailable by cold ligaments to the hoops of cartilage that construct the jaw.
# 29/06/2013 à 12:56 AMYVankova (site web)
# 29/06/2013 à 14:36 CHERYLMedvedeva (site web)
# 05/07/2013 à 11:55 ELIZABETHsidorova (site web)
# 28/07/2013 à 16:11 RUTHMedvedeva (site web)
# 29/07/2013 à 08:13 CHERYLChernova (site web)
# 04/09/2013 à 02:34 SvolochnovaHELEN (site web)
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