... Shark Teeth ...
Sharks donít get cavities probably because they are constantly shedding
Sharks have 40-45 teeth, with up to seven rows of replacement teeth
When a front tooth breaks or falls out, it takes only about one day
for a replacement tooth to move forward to the front row.
Sharks can go through more than 30,000 teeth in a lifetime.
Newer teeth are always larger, so sharks can look scarier as they age.