adhésion Flashcards

1
Q

def adhésion

A

ensemble des intéraction physico-chimiques qui contribuent à unir 2 substrats

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2
Q

def adhérence

A

contrainte nécessaire pour séparer 2 surfaces collées = forces qui s’opposent à la séparation des surfaces

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3
Q

test de traction

A

contrainte perpendiculaire

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4
Q

test de cisaillement

A

contraintes parallèles

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5
Q

def adsorbtion

A

capacité que possèdent certaines molécules à se lier à une surface très réactive

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6
Q

interaction cvi

A

physico-chimique

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7
Q

intéraction composite

A

mécanique (et un peu physico-chimique sur l’émail)

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8
Q

section des prismes d’émail avec le meilleur collage

A

transversale

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9
Q

concentration acide phosphorique

A

37%

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10
Q

durée mordancage émail

A

30 secondes minimum

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10
Q

que faire si contamination de l’émail

A

re mordancer 5 secondes

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11
Q

acide phosphoriqie élimine

A

boue + bouchons dentinaires

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12
Q

ce qui s’exprime ne MPa

A

Adhérence

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13
Q

évaluation adhérence

A

test mécanique

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14
Q

évaluation adhésio

A

indirectement par des tests de mouillabilité

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15
Q

pourcentage volume d’eau dentine

A

20%

16
Q

% volume d’eau émail

A

10%

17
Q

date utilisation mordancage

A

1995 par buonocore pour coller sur l’émail

18
Q

couche hybride est plus épaisse quand in utilise un :

A

MR