Toothbrush Evolution and Design Quiz

What was one of the earliest materials used to make toothbrushes?

• Plastic

• Glass

• Bone

• Metal

Why did manufacturers start using nylon for toothbrush bristles?

• It was cheaper to produce

• It dried quickly and was more hygienic

• It was more colorful

• It was softer than animal bristles

What material did the Swedish company use to make more sustainable toothbrush handles?

• Metal

• Wood

• Bio-based plastic from sugarcane

• Glass

What is one of the main environmental concerns with plastic toothbrushes?

• They are not colorful

• They are too expensive

• They break easily

• They are difficult to recycle

What was the main goal of the design experiments with different materials?

• To make the toothbrush more expensive

• To find a material that feels good and is durable

• To make the toothbrush more colorful

• To make the toothbrush heavier

What is the purpose of structured light scanning?

• To create 2D images

• To project light patterns onto objects

• To heat materials

• To cool down objects

What is the main challenge in 3D printing toothbrush bristles?

• Making them fine and flexible

• Making them heavy

• Making them colorful

• Making them long

Which material was found to clean the best in the chocolate spread test?

• Cotton toweling

• Microfiber cloth

• Hessian sack

• Nylon

What is the role of sodium lauryl sulfate in toothpaste?

• To add color

• To make it taste sweet

• To make it sticky

• To create foam

Why is fluoride added to toothpaste?

• To make it taste better

• To make it colorful

• To repair damaged tooth enamel

• To make it smell good