When Did We Start Getting Cavities?

The video explores the history and causes of tooth decay, focusing on the role of bacteria and diet. It explains how cavities form due to bacteria like Streptococcus mutants, which thrive on sugars and starches. The agricultural revolution marked a significant increase in cavities due to dietary changes. Historical evidence shows varying cavity rates in ancient populations, influenced by their diets. The evolution of cavity-causing bacteria is linked to human dietary shifts, with modern implications for dental health.

Why can't teeth heal themselves like bones or skin?

• They are too hard to regenerate.

• They are constantly exposed to bacteria.

• They lack blood vessels.

• They are made of non-living minerals.

What is the main bacterium responsible for causing cavities?

• Lactobacillus

• Streptococcus mutans

• Escherichia coli

• Staphylococcus aureus

Which dietary change significantly increased the prevalence of cavities in humans?

• The agricultural revolution

• The discovery of fire

• The introduction of dairy products

• The invention of cooking utensils

What type of food did early human relatives like Paranthropus robustus primarily consume?

• Processed grains

• Sugary fruits

• Meat

• Various plants

What evidence suggests that Neanderthals had Streptococcus mutans bacteria?

• Fossilized dental tools

• DNA from dental plaque

• Ancient dental records

• Cave paintings

How did the genetic diversity of Streptococcus mutans change around 10,000 BCE?

• It became extinct.

• It increased due to farming.

• It remained the same.

• It decreased significantly.

What recent development in Streptococcus mutans is causing concern?

• It is becoming resistant to antibiotics.

• It is causing fewer cavities.

• It is becoming less effective at causing cavities.

• It is disappearing from human mouths.