Humans have two sets of teeth during their lifetime:
- Primary (baby) teeth: 20 teeth total, with 10 in the upper jaw and 10 in the lower jaw. These begin to emerge around six months of age and are eventually replaced by permanent teeth
- Permanent (adult) teeth: Most adults have 32 permanent teeth, which include:
- 8 incisors (front teeth for cutting)
- 4 canines (pointed teeth for tearing)
- 8 premolars (for crushing and grinding)
- 12 molars (including 4 wisdom teeth, used for grinding)
Many adults have their wisdom teeth removed due to lack of space or other dental issues, which can reduce the total number to 28
. In summary, a typical adult human has 32 teeth if all wisdom teeth are present, and 20 teeth as a child with primary teeth
