do all human teeth have ligaments?

No, not all human teeth have ligaments.

Ligaments are connective tissue that anchors teeth to the jawbone.

They are present in all permanent teeth except for the third molars, also known as wisdom teeth. Wisdom teeth usually erupt in adulthood and often lack sufficient bone support, leading to impaction or misalignment.

Therefore, they may not have fully formed ligaments or may have weaker ligamentous attachments compared to other teeth.