Wisdom teeth appear to be an accident. Dental Clinics in DHA Lahore, our final set of molars to grow, cause millions of surgeries every year. Some people have “extra” teeth, while others do not. What’s the biological angle?
Let’s start with what isn’t the storey: Dental Clinics in DHA Lahore, The conventional wisdom about wisdom teeth assumes evolution was eliminating them until modern medicine intervened. The first molar and incisors emerge from the gums between the ages of 6 and 9. (Table 5.1). Except for the third molars (M3), which usually appear between the ages of 17 and 24. Without enough room, wisdom teeth become impacted, or unable to properly penetrate the gums.
The standard storey is that people with impacted M3s died before surgery. Those without the problem teeth thrived, passing on genes for reduced dentition. Oral surgeons help impacted teeth survivors survive and contribute to the gene pool.
But decades of research refute this toothless survival theory. Farming and industrialization have made it possible for us to eat softer foods as children.
Here’s the idea: Agricultural and processed foods are mushier than wild foods eaten by hunter-gatherers. Think porridge vs. wild fruit vs. roasted game. In childhood, hard food seems to stimulate jaw growth, allowing for three sets of molars. Soft grub doesn’t require enough chewing to promote jaw growth.
So, overcrowding in our mouths is a developmental issue, not an evolutionary one. Wisdom teeth are not entirely determined by genetics. Childhood diets and chewing habits likely have the greatest impact.
Back Molars: A History
In our upper and lower jaws, we shared the same 32 teeth as all apes. Humans today may or may not have final back molars.
Around 22% of people lack one or more wisdom teeth tip health, and 24% have impacted wisdom teeth. Also, half the planet has healthy wisdom teeth. So, when did wisdom teeth become a wild card?
Our ancestors had huge back teeth millions of years ago. Australopiths (2–4 million years ago) had molars twice the size of ours, despite being only three to four feet tall and having skulls less than one-third the size of Homo sapiens. Human dental size has been decreasing since the Australopith era. The molar surface area of Homo erectus was 1.5 times larger 2 million years ago.
Changes in diet and food preparation techniques seem to correlate with changes in our teeth. First, stone tools for pounding and cooking wild foods would have softened them, making chewing easier — and mega chompers less critical.
A farming lifestyle became prevalent in most societies around 12,000 years ago. Domesticated foods, like wheat flour and cow’s milk, are much softer.
Finally, industrial food production has softened our meals. Humans slurp protein shakes, eat spongy Big Macs, and eat gummy snacks. Unlike some modern foragers who eat kudu meat and mongongo nuts.
Use or Lose
So, processed and/or agricultural diets reduce the stress on our jaws required for adolescent growth. Our final molars may not fit by the time we reach adulthood.
Comparing jaw size and M3 formation across cultures supports this hypothesis. A 2011 study measured skulls from six farming and five foraging tribes. The farmers’ jaws were consistently shorter, allowing for less tooth formation.
This finding supports the idea that diet affects jaw size. In 2017, anthropologists found “modest” but reliable differences between foragers and farmers, especially if the latter group had dairy products. Others have found the same trend with only a few dozen skeletal specimens.
Similarly, access to processed foods predicts wisdom tooth issues globally. For example, 900 rural and urban South Indians were studied for third molar impactions. Rural participants had impacts at 15% while urban participants had impacts at nearly 30%. A study of 2,400 Nigerians found impacted Dental Clinics in DHA Lahore third molars were seven times more common in urban than rural areas. Experiments with animals fed soft or hard foods, or the same diet cooked (soft) or raw, provide a third line of evidence (hard).
There were dental issues, smaller faces, and underdeveloped jaws in rats as well as a rock hyrax (an elephant-like creature).
No one knows why some people lack wisdom teeth. For example, people without wisdom teeth didn’t have dental crowding issues and didn’t have a chewing disadvantage because their diets had softened.
Determining which dietary changes — tool use, cooking, domestication or industrialization — caused our wisdom teeth issues is also unclear. But the cumulative effect is clear: We eat softer foods than our ancestors did, and our mouths aren’t growing fully.
So many dental experts advise increasing your Wisdom Teeth Surgery in Lahore intake of crunchy, hard foods. Extra raw fruits, veggies, and nuts may help prevent future wisdom tooth extractions. anthropologist Julia Boughner wrote for The Conversation that while science cannot yet guarantee success, it can’t hurt.