This document discusses the classification and properties of alginate, a material used for dental impressions. It belongs to the category of elastic printing materials, which harden from a fluid to a solid state. Alginate is derived from brown seaweed and is composed of sodium salts that allow for easy handling. The document outlines the advantages and disadvantages of alginate, including its low cost but also dimensional changes. It also lists several brand names of alginate and provides references for further information.

1. ODONTOLOGI DR…MISAEL
A ..UACJ. PALACIOS
CLASSIFICATION OF PRINT MATERIALS ..
(ALGINATOS.)
PROFESOR…DR. ALFREDO
NEVAREZ RASCON.

2. In the printing materials are:
ELASTIC: those that pass from a fluid state to a highly elastic. Or solid
which can be removed from undercuts with relative ease and with
minimal deformation.
THESE ARE CLASSIFIED
IN TURN IN:
HYDROCOLLOIDS.
-Reversible (AGAR-AGAR)
-Irreversible(ALGINATO) FIG.02-
PRINTING OF
SILICON.
2.ELASTOMERS
-Poly mercaptano sulfuré.
-Silicona por condensación FIG 03-SILICONE
-Addition silicone IMPRESSION BY
CONDENSATION
-poliésteres

3. NON ELASTICS : Those materials that react assume rigidity, and
in some cases little or no elasticity.
CLASSIFIED IN TURN IN:
1-type plaster Paris.
2-molding compounds.
3-impression pastes.
4-wax to take impressions.
5-Polymers to take impressions
FIG.4-PLASTER PARIS
FIG.-5 WAX PRINT

4. ALGINATES»
FIG.-6 Alginate impression FIG7- Alginate impressions

5. WHAT IS THE
ALGINATE???..
Alginate is a purified chemical obtained from brown seaweeds.
These substances are for organic polymers derived from alginic
acid.
FIG.-8 BROWN ALGAE

6. CARACTERISTICAS»
Son compuestos que incluyen una variedad de productos
constituidos por los ácidos D-MANURICO y L-
GULURONICO y que son extraídos de algas marrones
conocidas como Phaeophyceae, siendo que las más
importantes para la producción comercial de los alginatos.
FIG.-9 ALGAS PARDAS (PHAEOPHYCEAE

7. CLASSIFICATION
ALGINATES»
Alginates with additives: additives were added to improve the surface
Alginates chromatic: alginates which are added are pH indicators
In order to know when to remove the teaspoon
Alginates with antiseptic substances: these substances was
added as chlorhexidine in order to avoid cross infection

8. USES OF THE
ALGINATE»
Alginate is a material widely used in dentistry for
impressions of teeth and adjacent soft tissues.
FIG.-11 PRINT MAKING
ALGINATE
FIG.-10 INSTRUMENTAL
ALGINATE

9. Components»
The main component of the alginate is the sodium salt of the acid
alguinio.
Furthermore, the powder contains calcium sulfate, trisodium
phosphate.
(Trisodium phosphate allows a more prolonged handling of the
preparation, thus it is said that retards the staling)

10. ADVANTAGES»
-ECONOMIC.
-EASY HANDLING.
-Hydrophilic properties
FIG.-12 MAKING CORRECT alginate
impression.

11. DISADVANTAGES»
-dimensional changes
-Low-fidelity details
-Elastic Recovery
FIG.-13 STRUCTURE FAILED alginate
impression.

12. TRADEMARKS»
-Alidel
-Ortho print
-Phase
-Cavec k 37
-hydro gum

13. BIBLIOGRAPHY»
http://www.google.com.mx/search?tbm=isch&hl=es&source=hp&biw=1024&
gs_sm=e&gs_upl=886l3208l0l3605l8l8l0l1l1l0l254l921l0.4.1l5l0
http://www.elprisma.com/apuntes/odontologia/alginatos/
http://odontored.wordpress.com/2011/08/12/clasificacion-de-los-materiale
http://es.wikipedia.org/wiki/Alginato