Understanding Tooth Decay and Its History

The video explores the nature of teeth as mineralized structures that cannot self-heal, leading to cavities caused by bacteria like Streptococcus mutans. It traces the history of tooth decay from ancient times to the agricultural revolution, highlighting the role of sugar and dietary changes. The video also discusses modern dietary habits and the evolution of cavity-causing bacteria, emphasizing the persistent issue of tooth decay in humans.

What makes teeth unique compared to bones and skin?

• They are not affected by bacteria.

• They are composed of mineralized crystals.

• They can heal themselves.

• They are made of living cells.

Which bacterium is primarily responsible for causing cavities?

• Lactobacillus

• Streptococcus mutans

• Escherichia coli

• Bacillus subtilis

What dietary change during the agricultural revolution significantly impacted human dental health?

• Use of spices in cooking

• Cultivation of grains like wheat and barley

• Introduction of dairy products

• Increased consumption of meat

How did the advent of farming affect the genetic diversity of Streptococcus mutans?

• It had no effect on genetic diversity.

• It eliminated the bacterium.

• It decreased genetic diversity.

• It increased genetic diversity.

What modern challenge is associated with Streptococcus mutans?

• It is beneficial for dental health.

• It has stopped causing cavities.

• It is no longer present in human mouths.

• It is becoming resistant to antibiotics.