composites Flashcards

1
Q

3 grandes familles de matériaux

A

polymères métaux céramiques

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2
Q

composition matrice résineuse

A

résine : bis-gma ou udma + abaisseur de viscosité = TEGDMA

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3
Q

épaisseur compo fluide

A

0,5 à 1mm max

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4
Q

épaisseur compo visqueux

A

2mm

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5
Q

compo traditionels / macrochargés

A

quartz

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6
Q

compo micro-chargés

A

sillice colloïdale

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7
Q

composites hybrides

A

microcharges + macrocharges de verre

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8
Q

compo bulk fluide avec recouvrement

A

4 mm d’un coup mais mettre compo visqueux par dessus

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9
Q

compo bulk visqeux sans recouvrement

A

un seul incrément

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10
Q

valeur moyenne retrait de polymérisation

A

2%

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10
Q

étanchéité si facteur C important

A

mauvaise étanchéité

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11
Q

compo si forces mécaniques importantes

A

hybride ou microhybride

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12
Q

compo à choisir si forces mécaniques faibles mais esthétique importante

A

nanohybride

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13
Q

tyoe molécule bis-gma

A

esther dimétacrylique

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14
Q

pourcentage d efraction volumique des charges à partir de laquelle on observe une amélioration des propriétés mécaniques

A

60%

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