pretty lecture lady

Question 1

most used restorative material (direct or indirect restorations)

Answer 1

composite resins

Question 3

3 resin matrix

Answer 3

bis-GMA
UDMA
TEGDMA

Question 4

high molecular weight???

Answer 4

bis-gma

Question 7

increase the mechanical and physical property

Answer 7

filler particles (reinforcement of resin matrix

Question 12

in composites, monomers to be coverted into:

this process is triggered by:

Answer 12

polymers

free radicals

Question 15

classification of composites:

Answer 15

1. filler particle size and size distribution (hybrid and nano*)
2. handling characteristics
3. type of polymerization

Question 16

classification by handling characteristic :
1
2
3

Answer 16

1. regular (many applications; versatile, layering tech., more esthetic
2. flowable (better flowability and adaptation, polymerization shrinkage, under regular comp. class II)
3. bulk fill

Question 17

developed to enable restoration in single increment built up to 4-5mm

Answer 17

bulk fill composite

Question 18

characteristics of bulk fill composites

Answer 18

1. increased depth of cure (polymerization)
2. reduce polymerization shrinkage stress
3. improved adaptation to the surface of the cavity
4. simplified placement tech.

Question 19

~~~~how do bulk fill composites achieve these characteristics?

Answer 19

1. modulating the polymerization reaction= relieving shrinkage stress
2. depth of cure (polymerization)
3. flowability and adaptation to the surfaces of the cavity

Question 20

bulk filler composites filler particles:

Answer 20

-lower amount of filler particles
-pre-polymerized filler particles
-low elastic modulus= help absorb stresses
-added larger filler size particles

Question 21

what kind of monomers do bulk filler composites used

Answer 21

1. UDMA
   -modified UDMA (adding aromatic groups)
   -fragmentation dimethacrylate monomers

Question 26

bulk fill composites use what type of monomers??

Answer 26

(typical polymerization of methacrylate) -fragmentation monomers(stress relieving monomers)

Question 27

bulk fill composites also utilized alternative photoinit

Question 30

bulk fill composites can be categorized into two categories/types

Answer 30

1. flowable bulk fill 2. full body bulk fill

Question 31

this category of bulk fill composite has lower elastic modulus and reduced wear resistance -base for regular composites as the occlusal increment -dent replacement only -better adaptation on the surfaces of the cavity

Answer 31

flowable bulk fill

Question 32

this category of bulk fill composite has

Question 33

with bulk fill flow, leave how much space to add regular composite towards occlusal?

Answer 33

~2mm

Question 34

this type of bulk fill has rheological modifiers that react to the sonic energy applied during placement (sonic vibration=becomes flowable composite)

Answer 34

sonic activated bulk flow

Question 35

what does the sonic application do

Answer 35

reduce viscosity =

Question 37

this bulk flow system

Question 38

essential steps for esthetic appearance (match with the surrounding tooth structure) and functionality

Answer 38

finishing and polishing

Question 39

polished and finishing decreases the coefficient of friction which

Answer 39

reduced the rate of wear

Question 44

advantages of bulk fill composite

Answer 44

-simple -less chair time -better flowability -***reduced polymerization and shrinkage

Question 46

disadvantages of bulk fill

Answer 46

-more translucent that regular -indicated for posterior restorations -cannot mimic natural layering of tooth

Question 47

acid-base, self-adhesive materials, combining fluro-aluminosilicate glass powder and polyacrylic

Question 50

basic composition of powder (glass)