dental adhesives

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Dental adhesives materials

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Page 1: Dental adhesives

FIG. 1

www.google.com

FIG.2

www.google.com

Page 2: Dental adhesives

It is an innovative, modern

achievement of dentistry, which

allows aesthetic results, generally,

that previously could not be

achieved.

FIG.3

www.google.com

Page 3: Dental adhesives

Restorations with important

achievements:

Being able to adhere does not only resin,

but also structures ceramics to dental

tissue.

Aesthetic

Biological

Functional

Page 4: Dental adhesives

Induction of oral fluid and bacteria in

microscopic fissures that exist between the

surface of the prepared tooth and the

restorative material

Page 5: Dental adhesives

In amalgam: produces no continuity between

the two structures, but over time the interface is

sealed, since it produces corrosion products

that seal.

In ionomer: fluoride is released which

prevents recurrent caries.

In resins: the direct filling are inert, do not

produce marginal seal, therefore we must seek

other methods of achieving marginal seal.

Page 6: Dental adhesives

Some may be polymerized only

with the components included

in its composition:

There are auto polymerizing,

self-curing, or chemical

activation.

FIG.5

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Page 7: Dental adhesives

Others need a light

generating device to be

cured: they are the

photopolymerizable, light

photocurable or activation

(with light).

FIG. 4 Self-etching adhesive system

photocurable of a single

component for the dentin and the

enamel which releases fluoride.

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Page 8: Dental adhesives

FIRST HYDROPHOBIC

SECOND MIXED

THIRD HYDROPHILIC

FOURT HYBRID LAYER

FIFTH SINGLE COMPONENTS

SIXTH ETCHING

SEVENTH ALL IN ONE

Page 9: Dental adhesives

FIRST: Before 1980. Without conditioning on dentin. It had very low adhesion values in dentin: 2-7 MP, the enamel MP 24-27.

SECOND: 3 times greater adhesion to dentin and enamel 30-50%.

THIRD: They generate bond strength similar to that between enamel and resin. It was only trying to produce a chemical bond, subsequently obtained a micro mechanical junction, by forming an interdiffusion layer which leads to high levels of adhesion.

Page 10: Dental adhesives

FOURTH: Adhesion greater than 20 MP

FIFTH: Based on hybridization dentin layer. Easier use than previous. Resistance similar to those of the fourth generation.

SIXTH: It begins to use primers etching and mixtures of adhesives with primers and phosphoric acid is removed except for the sound enamel.

SEVENTH: Among the improvements we can mention the self-etching adhesives and those which do not require mixing.

Page 11: Dental adhesives

MECHANICAL OR PHYSICAL

Exclusively for one mechanical locking.

It is based on morphological features of

the parts (Grasp) and may be at levels:

Macromechanic: undermined

Micromechanic: differs from the

previous one in the size of the parts.

Page 12: Dental adhesives

Forces are generated between both parts. They

are interactions at atomic level or molecular,

based on primary joints (chemicals: ionic,

covalent, metal) and secondary (hydrogen

bridges and oscillating dipoles). The ideal is for

primary joints to be produced.

Page 13: Dental adhesives

BIS.GMA Bisfenol-glicidil-metacrilato

HEMA 2 Hidroxidi-etil-metacrilato TEG.DMA Tri-etilen-glicol-glicidil-metacrilato

PEG.DMA Polietilen-glicol-dimetacrilato GPDM Gilcerol-propano-dimetacrilato

DMA Dimetacrilatos MMPAA Poliacidos-dimetacrilato-modificado

UDMA Dimetacrilato de Uretano HPMA Hidroxidi-propil-metacrilato

BPDM Bifenil-dimetacrilato 4-META 4-metacril-oxi-etil-trimelitato-anhibrido

PENTA Ester-fosfonato-penta-acrilato

Page 14: Dental adhesives

Low service tension

Low Viscosity

Dimensional Stability

Adequate Mechanical Properties: to resist

forces of mastication

Hydro resistance

Biological Compatibility

Page 15: Dental adhesives

High surface energy to attract the liquid

so that it can be drained. In order for

that, it is necessary for it to be clean with

a smooth surface (favors the chemical

union but not the mechanical). This is,

the surface must be wettable by the

adhesive.

FIG.4

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Page 16: Dental adhesives

NAME COMMERCIAL

HOME

SOLVENT CURING TIME

TETRIC N

BOND

IVOCLAR

VIVADENT

ETHANOL 10 SEC.

PRIME &

BOND NT

DENTSPLY ACETONE 10 SEC.

ONE COAT

BOND SL

COLTENE WATER 30 SEC.

TE-ECONOM

BOND

IVOCLAR

VIVADENT

ETHANOL 20 SEC.

ADPER

SINGLE

BOND 2

3 M ETHANOL 10 SEC.

Page 17: Dental adhesives

Retain most of the

tooth structure Achieve a lasting

and optimal

retention

Prevent

microleakage

Page 18: Dental adhesives

Photopolymerizable (marginal percolation)

Auto curing

Dual, Auto or phtocuring

Page 19: Dental adhesives

ADVANTAGES DISADVANTAGES Increase tooth retention and effort There is a greater chance of dentin

overmineralize

Higher marginal adaptation Need of long clinical time

Lower percentage of secondary

decay

Possibility of contaminating dental

structure

Decrease in sensitivity Major risk of over drying the dental

tissue or chance of moisture in the

substrate adherent

Page 20: Dental adhesives

3M

Bisco

Kerr

Dentsply

Kuraray

Jeneric

Vivadent FIG: 5

www.dentsply.es/adhes

ivos/XenoV.htm

Page 21: Dental adhesives

www.universodontologico.com.ar/pacientes/preguntas/adhesion.htm

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