What is the composition of the teeth of an adult human?
it is composed of calcium compound.
Out of 32 adult (permanent) teeth, most adults have 28(wisdom teeth extracted), or 24(wisdom teeth and one premolar in each quadrant extracted). Most adults in their 40's have the latter, because it was common to extract the 4 premolars for orthodontia at that time. Most younger adults have 28 teeth. Some adults have all 32. I would say the average adult has 28 teeth.
A human adult can have anywhere from 14 to 16 teeth in the upper jaw. 14 would be considered the minimum with the possibility of the other 1 or 2 teeth being the development of third molars; teeth which are commonly called "wisdom teeth". Wisdom teeth may or may not grow in, but 14 teeth should be what is expected at the very least.
at around 6 months they should have replaced all there teeth with adult teeth, like human babys do, they should never loose adult teeth, remember to brush your dogs teeth to prevent gum deaseas, that can cause heart problems like with people >.< call your vet if your dog has very dirty teeth and/or bad breath.