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rasini diacrilice compozite Flashcards

1
Q

forma de prezentare RDC

A

sisteme bicomponente autopolimerizabilensau duale
sisteme monocomponente pasta

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2
Q

denumiri RDC in sistem bicomponent

A

P+L
Smile/ Kerr
Evicrol/ Spofa

P+P
Concise/ 3M
Adaptic- fara gravaj

capsule- Compocap, Polycap

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3
Q

denumiri RDC in sistem monocomponent

A

Compound- godeu
valux-P450
tetric-ceram
herculite

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4
Q

clasificare RDC dupa compozitie

A

șarjate
neșarjate

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5
Q

clasificare RDC dupa matricea organica

A

Bis GMA
UDMA
mixte

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6
Q

clasificare RDC dupa larticule umplutura

A
  • clasice- macroumplutura 10-100 micrometri
  • microumplutura- 0.01-0.1 micrometri
  • hibride(condensate)
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7
Q

elemente componente RDC

A

SISTEME BIFAZICE
- faza organica (continua)
- faza anorganica (discontinua) umpluta cu ag cuplare
- agenti de cuplare silanici

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8
Q

ce contine faza organica RDC

A

monomeri de baza
monomeri dilutie
sisteme initiere polimerizare
aditivi

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9
Q

ce sunt monomerii de baz

A

compusi dimetacrilici, de regula aromatici
masa molec mare
contractie polim mica
capacitate buna umectare tesuturi

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10
Q

cel mai cunoscut monomer de baza

A

Bis GM =rasina lui Bowen
(bisfenol A glicidil dimetacrilat)

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11
Q

avantaje monomer baza

A

struct voluminoasa=> contractie polim mica

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12
Q

dezavantaje monomer baza RDC

A

vascozitate crescuta
masa moleculara mare

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13
Q

alti monomeri de baza in afara de Bis GMA

A

cu struct asem bis gma- bis MA, bis EMA, bis PMA
struct dif- UDMA

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14
Q

proprietati ideale monomeri de baza

A
  • contractie polimerizare minima
    vascozitate+ volatilitate mica
    absorbtie redusa apa
    aderenta la tes dure dent
    toxicitate minima
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15
Q

monomeri de dilutie enumerare

A

TEGDMA- trietilen glicil dimetacrilat
HEMA- hidroxietil metacrilat

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16
Q

proprietati monomeri dilutie

A

masa moleculara redusa
vascozitafe redusa
dilueaza monomeri baza vascozitate mare
infl prop RDC in fct de tip si proportie

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17
Q

ce se intampla daca avem monomeri f fluizi sau cant crescuta monomeri dilutie

A

creste contractia polimerizare
adeziune insuf
adaptare marg deficitara

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18
Q

ce sunt sisteme de initiere a polimerizarii

A

subst care pun in libertate radicali liberi( polimerizare reticulata, radicalica

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19
Q

initiator autopolimerizare

A

peroxid de benzoil 0,5-2,5 in baza

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20
Q

acceleratir autopolimerizare

A

*aminta tertiara aromatica:
n,n- dietanol-paratoluidina 0,5-3,2%
n,n dimetil paratoluidina 0,5-3,2%

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21
Q

initiator fotopolimerizare

A

CQ= camforochinona 0,2%
eter etilic/ metilic benzidina

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22
Q

agent reducator fotopolimerizare

A

amina alifatica/ aromatica
N,N dimetil aminoetilmetacrilat DMAEM

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23
Q

aditivi faza organica RDC

A

<0,5%
inhibitori polimerizare pt pastrare indelungata
stabilizatori UV
coloranti
impuritati

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24
Q

aditiv inhibitor polimerizare RDC

A

hidrochinona 0,1%
metilfenol

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25
spectru radiatii luminoase
400-500 nm
26
procent faza anorganica RDC din volum si greutate totala
15-55% vol 30-90% greutate
27
componente faza anorg RDC
- cuart - silice coloidala alumino silicati boro silicati Li, Ba, Zn, Sr, Sn fibre sticla triclorura yterbiu oxizi metalici, fluorura de Ba
28
dispersie faza anorganica RDC
polimerizare condensare
29
tipuri de umplutura faza anorganica
macroumplutura 10-100 micrometri microumplutura 0,01-0,1 hibrida midiumplutura 1-10 nanoparticule 0,005-0,1
30
avantaje nanotehnologie
estetica superioara lustru imbunatatit rezist mecanica m buna
31
cate tipuri de umplutura are TETRIC vivadent
4
32
cate tipuri de umplutura are Premise Kerr
3
33
ce sunt agentii de cuplare
organo silani derivati ai siliciu tetravalent
34
prop agenti de cuplare RDC
- la interfata faza org de anorg - zona de minima rezistenta compozit - prin polimerizare compozit- grp silani si grp monomeri participa la reactie pt asigurare legare chimica de matrice organica
35
ce inseamna silanizare
= tratare umplutura anorg cu silani => form leg chim intre silani - supraf particule umplutura -umplutura tratata se disperseaza in faza org
36
contraindicatii RDC
- imposibilitate izolare camp operator - situatii ocluzale nefavorabila- stopuri ocluzale se fac pe material restaurator (PM, M) - alergii
37
indicatii RDC
obturatii cls 1-5 sigilare santuri+ fosete modif volum, culoare hipo si displazii fatete directe inchideri diasteme/ treme reconstituire bont imobilizari adezive lineri fatete+ inlay indirecte rest protetice fixe punti adezive
38
dozare RDC
SISTEME MODERNE- predozate- seringi, capsule SISTEME CLASICE- P/L, P/P - dozare extemporanee
39
preparare RDC
manual/ mecanic pt a rezulta o pasta vascoasa
40
cum se face conditionare dentina pt RDC
lineri adeziv( primer)
41
cum se face conditionare smalt pt RDC
gravaj acid ag cuplare/ adeziv
42
tipuri compozite dupa tehnica aplicare
stratificat- 2mm/ strat bulkfill- monostrat 5mm
43
compozite aplicare prin tehnica stratificata
Herculite Ultra Filtek Supreme Plus Ultra TPH3 Esthet X Premise
44
ce liner se pune la tehnica stratificata
compozit fluid/ CIMR
45
recomandari practice RDC
- cav cu retentii normale -lineri+ obt de baza -bizotare conditionare dentina+ smalt strat subtire=> fracturi cavitati cu pereti in smalt
46
timp gelificare RDC
moderne- rapid clasice: 5-10 min
47
stabilitate volumetrica RDC
ft buna contractie polimerizare 1,5-3%
48
separatoe marginala RDC
<10 micrometri
49
porozitate RDC
aprox 10 micrometri in fct de marime particule
50
prop termice si mecanice RDC
termice- conductivitate+ difuzabilitate egale cu smalt/ dentina mecanice- duritate= amalgam
51
prop biologice RDC
pulpotoxic
52
adeziune RDC
mecanica: gen 1- fara conditionare mecani-chimica: gen 2,3- conditionare - de 4 ori m mare la smalt/ dentina
53
care RDC are absorbtie apa
cel cu microumplutura
54
dezavantaje RDC
-adaptare marginala necoresp m ales la prag ggv( pt ca contractie polimeriz, posib redusa fulare, necesita diga) - rata mare uzura m ales la laterali - m dificile+ costisitoare vs amalgam
55
manifestari stres asociat contractie la polimerizare
colorare marginala microfisuri carii secundare microfracturi smalt sensibilitate post op
56
modalitati reducere stres cobtractie polimerizare
1. reducere centre reactive polimerizare pe unit de volum 2.utilizare tipuri diferite de rasini
57
cum se reduc centre reactive polimerizare pe unitatea de volum? la RDC
- rasini pe baza monomeri cu greutate molec mare si contractie redusa - crestere cant umplutura
58
ce se foloseste pt strat intermediar modul elasticitate redus
-compozit fluid foto/autopolimerizabil CIS/ CIMR compomer
59
avantaje obturare stratificata Style Italiano
contur anatomic functional estetica ft buna fotopolim optima scade stres contractie polim
60
dezavantaje obturare stratificata
timp îndelungat tehnica minutioasa fotopolim multiple=> risc incalzire pulpa
61
avantaje monobloc compozit activat sonic
reducere vascozitate compozit+ injectare in cav=> creste adaptare la pereti cavit rapida
62
dezavantaje tehnica monobloc sonica
costuri suplimentare achizitie sistem reduce posib modelare anatoforma limitare in obtinere nuante/ opacitati

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