First of all, let me mention the major levels of biological organization for you. These levels can be classified into four or more different parts, but the most basic one is four. And these levels are cells, organs, tissues, and systems. The combination of cells makes organs.
The combination of organs makes tissues. And the combination of tissues makes systems. The teeth are actually a vital part of the digestive system, and it is definitely not a cell. Hence, we should be wondering between organs and tissues. Going straight to the point now, teeth are referred to as an ectodermal organ.
These kinds of organs are usually close to the extremity of our body. Other examples of these organs are the skin, hair, salivary glands, and sweat glands. Teeth are classified into three different parts, which are the enamel organ, the dental follicle, and the dental papilla.