Materiale

Question 1

Compozite chimica RDC

Answer 1

1. Matrice organica
2. Umplutura anorganica
3. Agenti cuplare
4. Sisteme Initiere
5. Aditivi

Question 2

Monomeri de baza-exemple

Answer 2

BIS-GMA
UDMA

Question 3

Monomeri dilutie-exemple

Answer 3

EGDMA

TEGDMA

Question 4

Umplutura anorganica-exemple

Answer 4

• macro
• micro
• nano
• hibrida

Question 5

Macroumplutura

Answer 5

• traditional= 10-100 microm
• modern:

1. midi=1-10 microm;
2. mini=0,1-1 microm

Question 6

Microumplutura

Answer 6

• 0,01-0,1 microm
• devine vascos in cantitate mare

Question 7

Nanoumplutura

Answer 7

• 0,005-0,01 microm
• indici de refractie asem- creste adancime polim/transluciditate

Question 8

Agenti de cuplare

Answer 8

Silani

cea mai slaba structura

Question 9

Sisteme de initiere

Answer 9

• Comforchinona (traditional)
• germaniu, grupari fotoactive incorporate in matricea organica

Question 10

Procente contractii polimerizare compozite

Answer 10

• compozite vascoase de max 2 mm= 2,4-2,8%
• fluide= pana la 6,5%
• bulk= 1,4-1,7%

Question 11

Coeficiente de expansiune termica compozite

Answer 11

• structuri dentare= 9-11 ppm/C^o
• Compozite= 25 ppm/C^o

Question 12

Module elasticitate struct dentare

Answer 12

• Smalt=82,7 Gpa
• Dentina= 18,6 Gpa
• Compozite= variabil

Question 13

Conductivitate termica structuri

Answer 13

• Smalt= 0,0022 cal/sec/cm²
• Dentina= 0,0015 cal/sec/cm²
• Compozit= 0,0025 cal/sec/cm²

Question 14

Caracteristica ormoceri

Answer 14

• incorporare silani in matricea organica
• contractie polimerizare cu 50% mai redusa decat la RDC

Question 15

Componente CIS

Answer 15

acid poliacrilic+sticla f-a-s

Question 17

Materiale Hibride

Answer 17

• CIMR
• Comp
• Giomeri

Question 18

CIMR- componente

Answer 18

• acid poliacrilic cu gr metacrilice
• sticla f-a-s

Question 19

Compomeri

Answer 19

• matrice org polimerica cu grupari acide carboxilice
• sticla f-a-s

Question 20

Giomeri-componente

Answer 20

• matrice organica polimerica
• particule CIS prepolimerizate

Question 21

Cascada Fizionomie

Answer 21

RDC>COMP>CIMR>CIS

Question 22

Cascada eliberare F

Answer 22

CIS>CIMR>COMP

Question 23

Cascada rezistenta mecanica

Answer 23

RDC>COMP>CIMR>CIS

Question 24

Caracteristici materiale biologice active

Answer 24

• neodentinogenetice
• antimicrobiene
• sedative variabile

Question 25

MBA autopolimerizabile

Answer 25

1. Cu rezist mec scazuta (CaOH2) suspensii sau cimenturi (0,2-1mm)
2. Cu rezist mecanica crescuta (silicati de Ca)- sigileaza bine plaga, straturi mai groase, solub scazute, D_III mai putin poroasa, mai scumpe

Question 26

MBA fotopolimerizabile

Answer 26

• sigilare dentinara crescuta
• ef biologice reduse fata de auto
• hidroxid ca/silicati de ca+rasini