Not all bodies are the same.
Is this mutiny?!
Take a bite out of this story.
This is not the Nemo you’re looking for.
Sometimes it pays to be the smallest fish in the pond.
We don’t know why they did so.
Baleen, one surprising fossil suggests, evolved from gums rather than teeth.
How long has it been since your last checkup?
Not all dino teeth are made the same…
Emphasis on might.
Sink your teeth into this story.
No more of that awful drilling in your teeth.
Imagine spending half of your day chewing food like our cousins, the chimpanzees. You’d never get anything done. Strikingly, human teeth have evolved to become smaller over the past million years or so. This begs the question: how did we become such efficient eaters? There are two answers. For one, human ancestors started eating higher quality food (meat) and, secondly, they employed food processing. By applying tool use to anything outside slicing and cutting meat, these early ancestors may have opened the flood gates of innovation.
Recent fossils unearthed in the Chinese province of Daoxian come to unravel the story of humanity’s spread as we know it today. The find consists of 47 teeth, belonging to modern humans, but what’s really important is their age – they have been dated to 80,000 years ago. This number doesn’t fit with the “Out of Africa” migration theory, holding that humans originate and have spread from the horn of the continent all around the world. The theory as we know it can’t explain human presence in the area for another 20,000 years.
Fewer materials in nature rival the toughness and resilience of a tooth or a seashell, and it’s all due to their unique structure; viewed under powerful enough microscope, they reveal layers upon layers of micro-plates, perfectly aligned and fused together. Material scientists have long sought to produce something that imitates these structures, with comparable properties and complexity, but apart from nacre (mother-of-pearl) they’ve had very little success. Until now.
Just as today -or a little less often, as we tend to abuse our teeth quite a bit nowadyas – early humans had to deal with cavities. An infected 14,000 year old molar may give us a glimpse into how they treated such afflictions, and is the oldest known evidence of dentistry.
With the advancements in 3D printing, it only seems like a matter of time until it starts to actively affect our lives. Especially prosthetics may be revolutionized by 3D printing, as we’ve already seen time and time again. Now, a group of dentists believe they can 3D print teeth using a simple and cheap technique, only taking a few minutes for it.
A new study has found that chewing gum is actually effective at cleaning your mouth of bacteria – but only if the gum is sugar free. If the gum has sugar, it actually feeds the bacteria even more.
An international team of scientists believe they have across the “microbial Pompeii” after they found preserved bacteria and microscopic particles of food on the surface of teeth more than 1,000 years old. The findings were made after the dental calculus or plaque that covered the ancient teeth was analyzed. Some very important discoveries were made in the process: ancient oral bacteria had already by
Gum disease is a common problem and its symptoms are unpleasant, for example swollen and sore gums. When you brush your teeth you could be spitting out a little blood. Your breath might be less than fresh and you may suffer minor aches and stinging. But thankfully gum disease, known to dentists as gingivitis or periodontal disease, is pretty easy to