Oats are more tolerant to extreme conditions than some of their grassy relatives, like wheat, and it is probable that they began to be cultivated in Europe for that reason. This grain continues to be farmed all over the world in areas that are not suited to more finicky grains.
Dental chart (tooth numbering) Teeth are numbered in order to identify them with ease. However there are two common systems of numbering teeth that can confuse unless you know which one you are using. America uses the Universal numbering system and numbers teeth like this:
Here below are some of the systems used by dentists worldwide to number each tooth. First of all, youâll need to know the types of teeth you have in your mouth. Every human being has 2 sets of dentition- the primary (milk, deciduous) dentition and the permanent (secondary) dentition.