M4 shakeproof washer

grabcad

Humans possess internal teeth that are embedded within their jawbones and play a crucial role in mastication. These teeth, often referred to as wisdom teeth, emerge during adolescence and continue growing throughout life, sometimes causing discomfort due to overcrowding or impaction. The internal structure of human teeth is composed of enamel, dentin, and pulp, which work together to facilitate the grinding and crushing of food.