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PREPARING ALGINATES

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... ALGINATES at higher temperatures and water hardness, the setting time is prolonged and the colour intensity of alginate impression material is changed. – PowerPoint PPT presentation

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Title: PREPARING ALGINATES


1
PREPARING ALGINATES
2
PREPARING ALGINATES
  • we recommend shaking the sachet, resp. the jar
    well before using the material
  • homogenizing the material
  • dont compress the material in the measuring
    scoop

3
COLOUR INDICATION
230 min Setting time
Mixing
Working
Setting in the mouth
30 s Working time 150 min
4
PREPARING ELASTIC CROMO
  • 11
  • (9g of powder 20 ml of water)

MIXING RATIO

5
Preparing - Dosage
  • 1. water
  • 2. powder
  • Upper jaw
  • 3 scoops 3 cups
  • (guage marks)
  • (powder) (water)
  • Lower jaw
  • 2 scoops 2 cups
  • (guage marks)
  • (powder) (water)

6
Preparing - Mixing
1. VIOLET phase
MIXING 30 s
  • the mixing is done by long strokes with a
    plastic spatula along the mixing jar walls.

7
Preparing - Application
2. DARK PINK phase

Application of the substance to the impression
tray
  • fill the impression tray to the
  • edge
  • optimum impression layer is
  • 4 6 mm

8
Impression Tray insertion
3. LIGHT PINK phase


Inserting the tray into patients
mouth


9
Impression - Fixing
4. WHITE phase -


Fixing the impression in the mouth setting
in the mouth
10
Impression Disinfection 1. Rinse the
impression under running water 2. Disinfect in
aqueous disinfection solution


e. g. Jodisol (in ratio 110) 30 s
11
PREPARING ALGINATES
  • SETTING TIME IS AFFECTED BY
  • TEMPERATURE OF WATER and AIR
  • recommended temperature is 23 ÂşC
  • 2. HARDNESS OF WATER distilled or deionized
    water
  • at higher temperatures and water hardness, the
    setting time is prolonged and the colour
    intensity of alginate impression material is
    changed.

12
STORING ALGINATES
1. Impression storage
  • Generally recommended pouring time is within 1
    hour
  • Prolonged pouring time according to the
    manufacturers recommendation when appropriate
    storage conditions are ensured
  • 100 humidity (transport box, PE bag with wet
    absorbent pad)
  • avoiding deformation fix in the holder, on
    the impression tray

13
STORING ALGINATES
2. Material storage
  • In a dry and dark place, at 5 ÂşC to 25 ÂşC, in a
    well sealed container
  • We recommend pouring the contents of the sachet
    into the jar, which can be sealed to avoid
    degradation of the powder by exposure to humidity
    and air

14
ALGINATES SpofaDental
YPEEN YPEEN PREMIUM ELASTIC CROMO
Composition older type new new
Mixing standard easy easy
Viscosity high optimum optimum
Setting time 2 30 min. 215 min. 230 min.
Impression storage 24 h 48 h 120 h
Colour green green Colour change (violet pink white)
Aroma mint mint cherry
15
  • Thank you for your attention!
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