TED-Ed: Why do we have crooked teeth when our ancestors didn't? | G. Richard Scott

What was a significant factor in the straight teeth and larger jaws of ancient humans?

• Genetic mutations

• Advanced dental care

• Lack of wisdom teeth

• Subsistence lifestyle and diet

How did the agricultural revolution contribute to dental crowding?

• By increasing the size of teeth

• By reducing the need for chewing

• By introducing new dental diseases

• By eliminating wisdom teeth

What is a common consequence of the mismatch between jaw size and tooth size?

• Fewer dental cavities

• Increased tooth decay

• Stronger jaw muscles

• Dental crowding and crookedness

What did the 1983 study on squirrel monkeys reveal about diet and dental development?

• Softer diets improved dental alignment

• Diet had no impact on dental health

• Tougher diets caused tooth decay

• Softer diets led to more crowded teeth

What factor is primarily responsible for the variability in dental issues across populations?

• Climate conditions

• Cultural practices

• Dietary habits

• Genetic differences