Once your adult teeth come in, that's all you've got to work with. Knock one out, or lose a few to decay, and you'll have to get dentures. It's a pain, but at least one team of dental researchers is now studying how to regrow human teeth—by looking at alligator teeth first.
American alligators have 80 teeth, each of which they replace about once a year. Over their long lives, an alligator may regenerate something on the order of 4,000 teeth. So a team of researchers from the U.S., China and Taiwan performed a detailed study of alligator teeth to learn their secret.
Of course, a study of alligator teeth is a long way from being able to grow new human teeth, but that's the eventual goal of research like this. Understanding how alligators regrow their teeth may also help scientists better understand rare genetic diseases in which people grow extra teeth or tumors from the tooth bed.
To perform their study, the researchers took snapshots of alligator teeth as the teeth cycled through stages of growth. They injected living juvenile alligators with a chemical that helped them visualize cells in the alligators' tissues that were growing and multiplying. They already knew that alligators have small replacement teeth waiting just underneath all their mature teeth, but these new experiments allowed the researchers to watch exactly what happens to the mature tooth, the replacement tooth and the bed the replacement tooth grows from, called the dental lamina, at different stages.
They even pulled teeth from alligators sooner than they would naturally shed, to see how the replacement tooth and dental lamina reacted.
The researchers concluded that the dental lamina likely has stem cells that help it regrow teeth. They also performed experiments to find what genes likely govern 'gator tooth growth.
They published their work in the Proceedings of the National Academy of Sciences.
Maybe it comes as a side effect of gator immortality.
Teeth is far from the first thing humans should want from gators.
Your comment is strange are you trolling? What postive thing do you offer to the article? Perhaps you should be blocked.
I've been hoping that research like this would begin for years.
Except I had always imagined a different apex predator. One that has evolved for over 400 millions of years, instead of the paltry 200 million years that the alligator has taken to develop. Thats right, the all mighty Shark.
Why a shark? Aside from its many other features, the sharks mouth has evolved to become the perfect killing machine. Inside the mouth are 3 rows of razor sharp teeth. Each row one step back and slightly smaller. The shark doesn't wait to passively loose its teeth, but instead cycles through them. The first row becomes dull, broken and jagged, so the shark sheds that row, shuffles the back two rows forward, and begins developing a brand new 3rd row. Talk about efficiency!
That being said, I can understand why the scientist instead chose the alligator. After all, it is much easier to study a terrestrial creature, than the king of predators in its natural environment.
The human body creates sugar on its own and so can use and tolerate some sugar. But all the excessive sugar humans eat destroy their teeth and bodies. It cause yeast to over multiply and causes health problems. Many yeast change and are thought to cause many types of cancers. Excessive sugar causes cardiovascular problems. Do a Google search on the harmful effects of sugar or excessive sugar. If you want to keep your teeth and have a healthy body, toss away the sugar from your life.
Study the natural primates and look at photos of them on the internet. Take a very close look at their teeth. They do not brush and they eat natural and they are doing just fine.
Alligators are immortal.
This is what I was referring to in my comment.
Google is your friend.
I hope you are satisfied with my positive contribution.