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materiale > subclase compozite RDC > Flashcards

subclase compozite RDC Flashcards

1
Q

subclase compozite RDC enumerare

A

ormoceri
ceromeri
polisticle
compomeri
giomeri

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2
Q

de la ce vine ormoceri

A

organically modified ceramics

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3
Q

ce sunt ormocerii

A

RDC cu faza organica- monomer anorgano- organic

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4
Q

denumiri comerciale ormoceri

A

Definite/ Degussa
Admira/ Voco
CeramX/ Dentsply

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5
Q

compozitie ormoceri

A
  • faza org: polisiloxanica leg duble polimerizabile
  • umplutura anorganica
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6
Q

reactie de priza ormoceri

A

gruparea SiOR3 form leg duble cu monomeri matrice/ componente anorg din umplutura- matrice policondensata organica+ anorg( reticulata)

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7
Q

proprietati ormoceri

A

masa molec de 1000x > monomeri RDC
contractie polimeriz cu 50% m mica -1,97%
rezistenta mec aprox RDC hibride
stabilitate cromatica
expansiune termica~ dinte

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8
Q

indicafii ormoceri

A

cav clasa 1-5
refaceri marg incizale
inchideri diasteme
fatete directe
reconstituire bont
reparatii fatete polimerice/ ceramice
inlay compozit

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9
Q

ex adeziv pe baza ormoceri

A

Admira Bond gen 5

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10
Q

de la ce vin ceromerii

A

ceramic optimized polymer

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11
Q

ce sunt ceromerii

A

RDC cu particule ceramice in umplutura anorganica

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12
Q

denumiri comerciale ceromeri

A
  • Targis/ Ivoclar
    Tetric Ceram/ Ivoclar Vivadent
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13
Q

compozitie ceromeri

A

-matrice organica dimetacrilica- Bis GMA, UDMA, TEGDMA
- umplutura 80%- 5 tipuri de particule

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14
Q

tipuri particule umplutura ceromeri

A
  • sticka de Ba
    sticla de Ba F Al silicatica
    amestec oxizi
    silice
    trifluorură yterbiu
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15
Q

indicatii ceromeri

A

obt estetice zona posterioara
cav cls 1-5
eroziuni
reparatii fatete polimerice/ ceramice
necesita sist adezive adaptate

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16
Q

ce sunt polisticle

A

rasini compozite care dupa polim au caracteristici de sticle

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17
Q

denumiri comerciale polisticle

A

Artglass/ Heraeus Kulzer
Belle glass/ Kerr
Solitaire/ Heraeus Kulzer

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18
Q

compozitie polisticle

A
  • matrice org pe baza monomeri polifunctionali- rata crescuta conversie de polimerizare si stabilitate
  • umplutura anorg (65%)- amestec sticle
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19
Q

ce sunt compomerii

A

compozit+ionomeri
=rasini compozite modif cu poliacizi, grupari acide

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20
Q

primul compomer aparut

A

1993- Dyract/ Dentsply de Trey

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21
Q

mod prezentare compomer

A

sistem monocomponent- pasta in seringi/ capsule

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22
Q

reactia de priza compomeri

A
  • primar- fotopolim
  • pe masura ce abs apa- reactie acid-baza lanturi carboxil- sticka
23
Q

diferente intre COMP si CIMR

A

comp- fotopolim+ r acid baza tardiv
cimr- fotopolim+ r acid baza debut imediat

24
Q

produse comerciale compomeri

A

F2000 compomer/ 3M
Dyract
Dyract AP
Dyract eXTRa
Hytac Aplitip/ Espe
Compoglass/ Ivoclar

25
Q

compozitie compomeri

A
  1. matrice org dimetacrilica+ grupari acide carboxilice
  2. umplutura- sticla fluoro alumini silicatica
26
Q

compozitie chimica compomeri

A

faza org
faza anorg
ag cuplare

27
Q

faza organica compomeri

A

monomer baza: CDMA, UDMA
monomer dilutie: GDMA, TEGDMA
polimer hidroxilic HEMA
sistem foto- amine tertiare CPO2

28
Q

actiune polimer hidroxilic HEMA in compomeri

A

modifica reologia
transport apa+ fluor

29
Q

faza anorg in compomeri

A

sticla fluoroaluminosilicat 45-67%
fluorosilicat de strontiu( Dyract)

30
Q

agenti cuplare compomeri

A

silicat coloidal
- dispersie larticule anorg
-leaga cele 2 comp

31
Q

componenta lichida compomeri
denumiri si rol

A

PRIMER- NRC, Prompt L Pop
faciliteaza adeziune
necesita/ nu necesita demineraliz
contraindicata pt alte materiale

32
Q

indicatii compomeri

A

eroziuni cervicale- lacune cuneiforme
carii radiculare
obt cls 3,4
pt obt cls 1,2- restaurare mixta compomer+ RDC
restaurari bonturi- coroana mai prezinta 1/2 pereti
restaurari coronare dinti fracturati
clasa 1,2 dinti temporari
sigilare
lineri/ baze

33
Q

contraindicatii compomeri

A

nu se fol pt coroane total ceramice

34
Q

prop mecanice compomeri

A
  • rez mecanica> CIS si CIMR, asem RDC cu microumplutura
  • duritate <= RDC
  • rez la abrazie scade in timp dat atac acid particule sticla si derulare reactie acid baza
35
Q

prop de suprafata compomeri

A

m bune decat CIMR si pastrate in timp

36
Q

prop adezive compomeri

A

14-20 MPa
- ca RDC- utilizare sist adezive similare

37
Q

efect carioprofilactic compomeri

A
  • atacul acid asupra particule de sticla fluoroaluminosilicatica=> eliberare ioni F
  • timp redus fara carie secundara
38
Q

contractia de polimerizare compomeri

A

~ RDC
- maj cintractiei in faza plastica, poate fi compensata prin fluaj
- efect benefic reducere stres rezidual si inchidere marginala

39
Q

absorbtie apa compomeri

A

> RDC
- datorita HEMA
fav eliberare F
prin matrice org hidrofila
in cant mare=> efect negativ asupra prop mecanice

40
Q

vascozitate compomeri

A

< RDC deci aplicare mai usoara

41
Q

dilatare termica compomeri

A

= struct dent
aprox 11 ppm/ grade celsius

42
Q

eliberare fluor compomeri

A

cant mici fata de CIS si CIMR

43
Q

cat se fotopolimerzi compomerii

A

40 sec

44
Q

cu ce se face prelucrarea obturatiei compomeri

A

cu discuri si benzi lustruit

45
Q

ce se intampla daca exista compomer nepolimerizat

A

efect iritativ local

46
Q

denumire comerciala rasini compozite silorani

A

Filtek Silorane 3M Espe

47
Q

ce sunt rasici compozite pe baza silorani

A

mat compozit microhibrid
in compozitie silorani ( siloxani+ oxirani)

48
Q

contractie polimerizare rasini baza silorani

A

0,9%

49
Q

dezavantaje rasini silorani

A

estetica
de adeziune

50
Q

sistem clasificare dinti endo- restaurati

A

clasa 0- reconstituire bont coronar din compozit
clasa 1- aplicare pivot
clasa 2- interventii pre restaurative (extruzie ortodontica, alungire coronara)
clasa 3- pivot aur
clasa 4- extractie

51
Q

cand se aplica pivot

A

dinti frontali+ PM cu <50% din structura dura restanta
raport coroana- radacina nefavorabil

52
Q

rol pivot aur

A

conservare dinte in absenta ferrule effect
creste modul elasticitate- suporta m bine stres
creste risc fractura radiculara

53
Q

dimensiuni minime ferrule effect

A

inaltime 1,5-2 mm
grosime > 1 mm

materiale (5 decks)

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