BOMATERIAL structure

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BOMATERIAL structure

Nur Istianah, ST.,MT.,M.Eng

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• Biomaterials are classified as:

– Organic if contain carbon – Inorganic if they do not.

• More specifically biomaterials fall into one of three of materials:

– Metals (inorganic material) – Ceramics(inorganic material) – Polymers (organic material)

Type of Biomaterials

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Biomaterial for dental implant

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Biomaterial for

dental implant

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Polymer structure

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Polymer structure

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Biopolymer structure

Linear

Branched Cyclic

Cross-linked

dendritic

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Biopolymer structure

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PMMA

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PMMA

• Bone cement

• Strong

• Brittle

• Methyl methacrylate consist of

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Silicon

Organic group

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Metal structure

• Metal are mostly used in polycrystal

• Its structure can be analysed by SEM (40000x)

• Its structure can be analysed by TEM (100000x)

• Structure of metal can be single structure or polymorphic

• Metal deposit that was purified from its oxide is called ores

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Metal crystal structure

FCC

Face centered cubic : ductile

BCC

Body centered cubic HCP

Hexagonal closed packed

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Metal structure

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Structure analysing step

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HCP - FCC

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• Structure changes by temperature

• Structure affect the density

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Cracking of ceramic

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