Ceramic Materials for Biomedical Application

What is the main purpose of biomaterials?

• To serve as a primary source of nutrients for biological systems

• To increase the mechanical strength of natural materials

• To support the healing or replacement of organs altered by disease or accident

• To enhance the aesthetic appeal of synthetic materials

Which of the following is NOT a classification of biomaterials according to their chemical nature?

• Gaseous

• Ceramic

• Polymeric

• Metallic

What does the term 'ceramic' originate from?

• A Latin word meaning 'hard material'

• A French word meaning 'moldable substance'

• An English word meaning 'heat resistant'

• A Greek word meaning 'burnt stuff'

What are bioceramics primarily used for?

• Water filtration systems

• Heat shielding for spacecraft

• Dental and orthopedic applications

• Electrical insulation

Which two ceramic oxides are most important for biomedical purposes?

• Calcium oxide and cerium oxide

• Titanium oxide and copper oxide

• Alumina and zirconia

• Silica and magnesia

What property of alumina and zirconia contributes to their biocompatibility?

• Their electrical insulating properties

• Their ability to dissolve in water

• The chemical stability of their crystal lattice

• Their high thermal conductivity

Tags

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What is the main structural mineral component of bones and teeth?

• Zirconium oxide

• Sapphire

• Hydroxyapatite

• Tricalcium phosphate

What is a key advantage of using hydroxyapatite in biomedical applications?

• Its high electrical conductivity

• Its high biocompatibility

• Its opacity to X-rays

• Its flexibility and ductility

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NGSS.HS-ETS1-3

What is the main disadvantage of hydroxyapatite as a biomaterial?

• Its high thermal conductivity

• Its relatively low mechanical strength

• Its color

• Its high cost

What is the usual preparation method of porous hydroxyapatite ceramics?

• Cold pressing

• 3D printing

• Powder-sintering process

• Laser engraving