Materials Composite (40 Small F45 )

Front 1

Silicate cements

- GR not used any more

-the only adv

Back 1

-due to poor bio Prop (pulp irritation w presence of Arsenic which is toxic)

-F release (Anticariogenic)

Front 2

EXAM

Unfilled acrylic restorative resin

-the Disadv

Back 2

-Dimensional instability (⬆️ polymerization shrinkage w cte), irritation, poor mech prop

-loss of esthetics

Front 3

Ideal Req

-MCQ Soluble or insoluble

-MCQ Must be Radiolucent or Radiopaque

Back 3

- should match the tooth in color, translucency w RI, without staining or Discoloration by time

-not Toxic or irritant

-insoluble

-have good mech prop

-have cte similar to tooth

- minimal Dimensional Changes on Setting

- Take Smooth Surface finish

- Radiopaque

-should adhere to enamel w dentin (Chemical bonding)

من الاخر

-insoluble

-Radiopaque

Front 4

GR :

- restoration should have cte similar to tooth

-restoration should be Radiopaque

Back 4

-To prevent leakage

-To enable ID of overhanging edges w detection of 2ry caries

Front 5

SCIENTIFIC TERM

Combination of two or more Chemically Different Materials

Back 5

Composite structures

Front 6

Term resin composite refers to

Back 6

Polymer

Front 7

Dental Composities made by

Back 7

-Filler particles (dispersed phase) الحاجة الكويسة

-Polymeric resin Matrix (dispersion medium or Continuous phase) الحاجة الوحشة

Front 8

Composition

Back 8

-Organic matrix

-Inorganic fillers

-Coupling agent

-Initiator- activator System

-Inhibitor

-Pigments

Front 9

Organic Matrix

-other name

-MCQ composed of.. As

-MCQ Role

Back 9

-Dispersion medium or Continuous phase

-DiMA oligo-polymers (oligomer)....:

1)Bis-GMA

2)Bis-EMA

3)UDMA

4)TEGDMA

بيس يا جي جي بيس

-Plasticity

-Polymerization reaction

-Dispersion medium

Front 10

Bis-GMA

-Abbrev

-MCQ F45 also called

-MCQ Viscosity high or low

-water sorption high or low

-Compressive strength high or low

-Sometimes Substituted with

-allow more Crosslinking by which Addition or Condensation

Back 10

-Bisphenol glycidyl MA

-Bowen's resin

-high

-low

-High

-Bis-EMA

-Addition

Front 11

Bis-EMA

-abbrev

-MCQ Viscosity high or low

-Mech Prop high or low

Back 11

-Ethoxylated Bisphenol A MA

-low

عشان كدا بنعتبره بديل للأول

-High

Front 12

مهم فشخ

UDMA

-Abbrev

-MW high or low Compared to Bis-GMA

-Viscosity high or low

-toughness high or low

-Has Gt susceptibility to

Back 12

-Urethane DiMA

-low

الضوء خفيف بقي

-low

عشان كدا مهم فشخ

-High

اوعي الخازوق

-visible Light Curing

ما هو كان من أمثلة الlight cured افتكر بقي

Front 13

TEGDMA

-Abbrev

-MW high or low

-MCQ Viscosity high or low

-MCQ F4555 used as

-GRمهم فشخ Added to Bis-GMA w UDMA

بصمجها : GDMA ال UDMA و حرف الU بقي G اللي هي GMA

Back 13

-triethylene glycol diMA

-low

-Very low

-thinner or diluent

-to dec viscosity w allow more filler w better dispersion

Front 14

Inorganic fillers الحاجة الكويسة

-other name

-consist of

-MCQ Heavy elements like w MCQ Contribute to composite

-MCQ Recently also used as filler

-MCQ F45 Blue Box Role

- العيب الوحيد

Back 14

-Dispersed phase

-Quartz w borosilicate glass w LiAl silicate

اي silicate ارشقه

-Barium w Strontium Glass ... Radiopacity

هم زجاج بقي فا Radiopacity و دي افتكرها من GIC

Strontium gaya mn Strong

-CAF Ca Fluoride

-⬆️mech prop

-Provide Radiopacity

-Provide good esthetics

-⬇️polymerization shrinkage

-⬇️cte

-⬇️water sorption

-Responsible for Viscosity of material

-can used for Anti-cariogenic (F)

-Responsible for Viscosity

Front 15

Class acc to filler size w Loading

Macrofill w Fine Particle (Midfill or minifill) w Microfilled w Hybrid (mix) w Nanofilled or Nanomers or Nanoclusters

Prop

Back 15

البصمجة

Good Mech > Roughness

Fine > Finishing ✅

Nano > translucency ⬆️

Micro > shrinkage ⬆️

Front 16

Alteration of filler Type

Back 16

-Prepolymerized اتفاعلت قبل كدا filler particles (Organic fillers)

-Ceromers

-Fiber reinforced composite

Front 17

1)Prepolymerized filler particles

-other name

-allows ⬆️ or ⬇️ filler loading (⬆️ or ⬇️ fillers)

2)Ceromer

- Term stands for

-⬆️ or ⬇️ Mech Prop

-Used as

3)Fiber reinforced composite

- Most common Type w GR

Back 17

1)

-Organic fillers

يعني filler بس بقت Organic

-⬆️ (⬆️)

2)

-Ceramic (Ceramic fillers) optimized Polymers (Composite)

-⬆️

-Direct : Light cured restoration in all cavity classes

-Indirect : Both Light w heat Curing

السيراميك لو النور فا بيبان الصبح فشخ انما بليل هنحتاج نطفي التكييف

3)

-Glass fibers... Due to their good esthetics (translucency) w good bonding with resin matrix

Front 18

Coupling Agent

-MCQ Most common Ex

-Characterized by having :

A) MCQ name of groups

B) Name of parts of this groups w Bond with

-GR Strong Bonding important

Back 18

-Silane

دا سيلان يا بيه لازم نجوزهم

A) bifunctional groups

B)

-Inorganic part that can bond with inorganic fillers

-Organic part that can bond with matrix

-Allow Stress tranfer so Improves Composite Strength

Front 19

MCQ

Initiator w Activator

Comp between Self (Chemical) cureينشف لوحده w Light cure ينشف بالضوء

-Initiator

-Activator

-Supplied forms

-Adv

-Disadv

Back 19

Bulk Filling كمية واحدة ➡️ self

هاكل الكمية دي كلها لوحدي من غير توتر

Controlled Wt براحتي ➡️Light

طالما النور منور يبقي هعرف الساعة كام

Aliphatic ➡️Light

Front 20

-GR Light cured requires incremental Packing

Back 20

To overcome Limited light penetration

علي الله حاجة تعدي بقي

Front 21

MCQ f45

Depth of cure is dependent on variables as

Back 21

- Characteristics of Light Source (Light intensity w wavelength range)

-Distance between Source w composite

-Curing time

Front 22

Relation between Light intensity w Distance

Back 22

Indirect

Front 23

Dual cure resin composite :

-mean Chemical or Light

-GR Combination of Types

-MCQ GR preferred in core Build up

-Form of Supply

Back 23

-Both

-to ensure proper polymerization especially in deep areas//// which may not be subjected to Light cured

-Bec it combines between Chemical w Light cured to ensure proper polymerization

بتاعة الchemical

-Two paste System

-Auto mixing syringe

Hint 23

مجرد ما خد Light هيبتدي ينشف

Front 24

Inhibitors

-GR Added

-MCQ F45555 Commonly used Ex

-MCQ NB what Ex also

Back 24

-to prevent polymerization w control wt by dec Sensitivity to Light

-hydroquinone but now mono ethyl ether of hydroquinone( MEE of hydroquinone)

-O2 or eugenol

Front 25

GR

-mono ethyl ether of hydroquinone used than hydroquinone

Back 25

- Bec hydroquinone has poor color stability w causes Discoloration

Front 26

1)Pigments :GR inorganic oxides are added in small amounts

2)MCQ UV Stabilizers : GR added

3)Fluorescing agent : GR added

Back 26

1)to provide shades

2)to absorb electromagentic radiation w ⬆️ color stability as they Prevent discoloration with age

3)to give Fluorescene Natural like appearance

Front 27

Prop of resin composite

1)Working w ST : Light or Chemical

2)Mech Prop : rely on filler or matrix

3)Polymerization Shrinkage w stresses :

A) السبب

B)read keda can lead to

Back 27

1)Light بمزاج

2)filler

3)

A) matrix

B)High Stresses may result in : composite /tooth bond failure resulting in :

-microleakage

-post operative HSN

- Recurrent Caries

-enamel cracking

Front 28

MCQ f45 Blue Box

To Reduce polymerization shrinkage or stresses we should

Back 28

-use incremental tech

-Use Indirect composites (Inlay or onlay)

-Use low shrinkage composites

-Use Low E cavity liner (sandwich tech)

-Slow Curing rate

Front 29

MCQ

1)Using incremental tech :

A) apply composite in kam

B) GR increments will Chemically adhere together

2)Indirect composites (Inlay or onlay) :Only shrinkage occ in

3)Use Low E :

A) name of tech

B) lining cavity with

4)Slow Curing rate Ex

Back 29

1)

A)2mm

B) due to presence of O2-inhibited layer

2)resin cement طبقة اللزق اللي انا حطتها بس

3)

A) sandwich tech

B) Flowable composite or GIC

4)

- Chemical or dual cure composites

-Soft Start Curing or ramp(delay) curing in Light Curing

Front 30

Thermal Prop

-Relation between Filler loading w Cte w thermal conductivity

Back 30

⬆️ W ⬇️ w ⬆️

Front 31

Water sorption

Excessive water sorption may lead to W GR

Back 31

Degradation at filler/matrix interface... due to Hydrolysis of bond between fillers w matrix

Front 32

Solubility

Related to leaching out of

Back 32

Residual monomers

Front 33

Esthetic Prop

-Related to filler loading or filler size or matrix w which is more effective

-GR color stability of Light cured better than self

Back 33

-Filler size w Loading... Size

-Due to color Changes resulting from breakdown of tertiary amine activator in self Curing

Front 34

Bio Prop

-all major comp of matrix are Toxic or not w in vitro or vivo

-MCQ What reduce ability of comp to reach pulp Tissue

-MCQ Relation between Degree of conversion w Toxicity

Back 34

-Cytotoxic... Vitro

-Dentin barrier (base)

-Indirect

Front 35

Manipulation

1)MCQ EXAM Material Selection :

A) for anterior restoration what Type of filler considered

B) for posterior what Type of filler considered

2)Etching enamel w dentin :Acid etch is applied how long for enamel w dentin

3)Chemically cured :

A) how many pastes used on Mixing

B) Mix using

4)Light cured :

A) Depth cure

B) GR celluloid matrix شفاف (transparent) can be applied aw GR Celluloid has adv and diaadv

C) In accessible areas so use

D) In inacessible areas so use

Back 35

1)

A)Micro-filled w Micro-Hybrid w nano

B) nano-filled w Hybrid

2)Enamel : 30 sec w Dentin : 15 sec

3)

A)2

B) plastic spatula عشان لو معدن اللون هيتغير

هاكل لوحدي بقي فا المعلقة لازم

4)

A)2mm

B)

Adv :

- provide Smooth Surface finish w Prevent O2 inhibited layer formation

Disadv :

-o2 inhibited layer will be removed through finishing w polishing

C) celluloid matrix

D)overfill then Remove excess

Front 36

-General App

-Limitations

Back 36

-Anterior w Posterior Restoration

- Anterior venners

-core build up

-Flowable composite

-pits and fissure sealant

-High polymerization shrinkage

-Low mech Durability Compared to amalgam

-more susceptibility to Recurrent caries

-Tech Sensitivity and several steps

-Surface Discoloration

Front 37

Modifications

Back 37

Front 38

Alteration of matrix type

-List

-Aim

Back 38

1)ormocer

2)low shrinkage matrix Systems

⬇️ Shrinkage .

Front 39

Ormocer

-MCQ Stands for

-composed of

- adv

Back 39

-Organic modified ceramics

-Ceramic polysiloxane

-⬆️mech prop w ⬇️Shrinkage

Front 40

Low Shrinkage matrix

Back 40

-Ring opening silorane monomer

-High MW resins

-SDR Stress decreasing modulators

Front 41

Ring opening

-MCQ Called

-Chemical subunits

-MCQ Limitations

Back 41

-Silorane

-siloxanes w oxiranes

-hydrophobic

- not compatible with other resins

-req special bonding agents

Front 42

High MW resins

-MCQ the Most common

-structure

-Function

Back 42

-DX 511

-Long Rigid core w flexible arms

-⬇️ total polymerization shrinkage w shrinkage stress.

Front 43

SDR

-ACTION

Back 43

⬇️ polymerization shrinkage w stresses

Front 44

F releasing

Back 44

Compomer

Giomer

Front 45

Compomer

-other name

-mix between

-Hydrophobic or Hydrophilic

Back 45

-polyacid (part of Glass ionomer) modified composite

-composite w part of glass ionomer

-Hydrophobic

Front 46

اكتر واحد يطلع F بالترتيب

Back 46

Glass ionomer

Compomer

Giomer

الترتيب العادي يعني

Front 47

Giomer

-mix between

-EXAM Name of particles added to resin w act as

Back 47

-Glass ionomer w composite

-Pre reacted filler particles... F Reservoir

Front 48

Antibacterial (under research)

-Ex

Back 48

-MDPB

مدب اللي في الدنتشن

-Quaternary ammonium

-Ag nanoparticles

Front 49

Bioactive

- Stimulate

-Releasing

Back 49

-Remineralization

-Ca w F w PO4

Front 50

Flowable composites

-relied on low or High Filler loading

-Prop

-App

Back 50

-low filler loading w ⬆️amount of diluents

-Good Flow

-Low E

-High Shrinkage

-Low wear resistance w Strength

-cavity (base) lining under composite مهمة

-Paediatric restoration الأطفال

-Class V restorations مهمة

- PRR بداية التسوس

Front 51

EXAM Bulk fill composite

- MCQ Filling cavity with increments Thicker or thinner w kam

-forms

- MCQ Technology behind it

-App : Anterior or Post restoration

Back 51

-Thicker...4-5 mm

-Flowable bulk fill

-Viscous or packable bulk fill

-Enhanced polymerization by Luricin (active photoinitiator يقدر يقعد المدة دي)

-⬇️polymerization shrinkage

-posterior restoration especially in large deep cavities

Front 52

Self adhesive Flowable

-MCQ no need for

- MCQ As

-MCQ EXAM Incorporating

-MCQ is its bonding efficacy is more than using separate bonding Steps

Back 52

-bond or etch

-GPDM w 4 META

اعكس MDB و حط G

-Acid monomer

-No

Front 53

1)Types of Light Curing

2)Which fan is necessity

3)Which lamps Must be caliberated تتأكد كل شوية انها شغالة

4)which Generate heat

5)which Spreading Rapidly

Back 53

1)

-QTH Quartz tungsten halogen lamps ابو سلك و مروحة

-LED Light emitting diodes (wireless)lamps

2)QTH

3)QTH

4)QTH

5)LED

Front 54

NB

Back 54