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Restorative Art > Death Masks > Flashcards

Death Masks Flashcards

1
Q
  • Negative Mold
  • Positive Mold
A

Two Castings Are Made

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2
Q

A mold made from an object and used for casting a duplicate of that object.

A

Negative Mold

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3
Q

A reproduction of an object which is obtained from a negative mold.

A

Positive Mold

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4
Q
  • Quick
  • Inexpensive
  • Easily Obtained
A

Advantages of Plaster of Paris

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5
Q

Use fresh plaster of paris becuse old plaster will not “set” satisfactorily if it has absorbed moisture from the air.

A

For Best Results

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6
Q

Instead, use:

  • Rubber
  • Plastic
  • Porcelain
  • Enamel
A

Do not mix plaster of paris in a metal bowl

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7
Q

Do not _____ the bowl or instruments in the sink.

  • Tiny particles of plaster may create a blockage
A

Clean

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8
Q
  • Salt
  • Warm Water
  • Excess Stirring
  • Metal Mixing Bowl
A

Hastens the Setting Time of Plaster of Paris

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9
Q
  • Vinegar
  • Cold Water
A

Retards the Setting Time of Plaster of Paris

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10
Q
  • Apply a light oil to the skin
  • Cover eyelashes, eyebrows, mustache and hairline with a liberal amount of petroleum jelly.
  • Cover cranial hair
  • Consider hand and wrist hair
A

To Preare the Skin and Hair

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11
Q
  • A bathing cap
  • Oiled Paper
  • Damp Toweling
A

Cranial hair may be covered wtih these

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12
Q

This hair may need to be shaved

A

Arm and Wrist Hair

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13
Q

It will cause it to be pulled from the skin when removing the mold.

A

If plaster of paris penetrates through to the hair

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14
Q

Their purpose is to confine the wet plaster.

A

Dams

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15
Q
  • Clay wall
  • Cardboard frame- covered with oil, massage cream, or petroleum jelly to prevent absorption of water.
A

Types of Dams

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16
Q
  • 2 quarts- face
  • Use coloring
  • Add the necessary ingredients to speed upor slow down the setting time.
A

Place Water in a Mixing Bowl

17
Q

Use to distinguish the mold from the cast:

  • Laundry Bluing
  • Ink
  • Any water soluble pigment
A

Coloring

18
Q

Methods:

  • Flour sifter
  • Sift through fingers
  • Tap from a spoon

Add plaster until all the water is absorbed.

  • Proper mixture will resemble dried mud.
A

Slowly Sift the Paster-of-Paris Into the Water

19
Q
  • Deep stirring- minimizes air bubbles.
  • Don’t overstir- the first application must not be quick setting.
A

Stir the Mixture with a Large Spoon

20
Q
  • This step is very important if you are to achieve a good impression.
  • Methods of application:
    • Brush
    • Flicking it from the fingers
    • Spooning it on
  • Air bubbles will cause small holes in the hardened mold.
    • These bubbles can be eliminated by blowing on them.
A

Apply the First Application of Plaster

21
Q
  • These layers will supply strength to the mold.
  • Apply with a spoon or spatula
  • Finished mold- 5/8” thick.
  • Determine any thin areas and correct them
A

Apply the Succeeding Applications of Plaster

22
Q
  • Test the plaster
  • The mold is removed promptly to prevent dehydration of the tissues as setting plaster generates heat.
  • Fresh plaster of paris will harden in about 15 minutes.
A

Remove the dam as Soon as Possible

23
Q

Roll and fingernail into the plaster, a sharp, clean impression means the mold may be removed.

A

Test the Plaster

24
Q
  • From the hand- by working the fingers free
  • From the face- by rocking it from side to side the break the suction.
  • Shave any wide edges
  • Set aside until the heat has dissipated
A

Remove the Mold

25
Q
  • Check for flaws
  • Fill any imperfections
A

Inspect the Inside of the Mold

26
Q
  1. Prepare the mold separator
  2. Prepare a hanging or attaching hook
  3. Prepare a new batch of plaster of maris and water
  4. Make a shell
  5. Thicken the side walls
  6. Saturate square pieces of gauze with plaster mixture
  7. Position the wire hook
  8. How to make a solid cast
A

Making the Positive Cast

27
Q
  • Fill the inside of the mold with liquid soap allowing it to be absorbed, or:
  • A light oil is poured into the mold and carried across the thickness of the margins
A

Prepare a Mold Separator

28
Q

Copper wire properly bent.

A

Prepare a Hanging or Attaching Hook

29
Q
  • A clean container
  • No salt
  • No coloring
A

Prepare a new Batch of Plaster of Paris and Water Using:

30
Q
  • Pour plaster into the mold
  • Carefully, rotate the mold in your hands
  • Pour plaster back into the mixing bowl
  • Break any air bubbles
  • Repeat these steps three times
A

Make a Shell

31
Q
  • Use a spatula and apply plaster to the margins so it flows inward.
  • Keep the margin of the mold scraped to the level of the cast margins.
A

Thicken the Side Walls

32
Q

This step is performed to strengthen the mold but it is not essential that it be done.

A

Separate Square Pieces of Gauze with Plaster Mixture

33
Q

Gently place the wire into the plaster as it begins to harden.

A

Position the Wire Hook

34
Q
  • Make the first few pourings necessary for a shell cast.
  • Fill the mold with plaster mixture.
    • Jar several times- to settle the plaster and free any air bubbles.
  • Position the wire hook as the plaster begins to firm.
A

To Make a Solid Cast:

35
Q
  • Drying time- at least 12 hours
  • Pour water over the back of the mold to soften it.
  • Place the mold face down on a soft foundation to absorb the shock of chiseling.
  • A blunt cold chisel is placed against the margin of the mold at a right angle to the cast.
  • Strike the chisel with a light mallet- this is done at various positions all around the margin of the mold.
  • The process is repeated until the edges of the mold break away allowing the remainder to be easily removed.
A

Removing the Cast From the Mold

36
Q
  • Small holes
  • Hair regions
A

Making Repairs

37
Q

Scrape plaster from inside the cast and fill the holes with a spatula.

A

Repairing Small Holes

38
Q
  • Scrape down the normal projection.
  • A pointed instrument is used to etch the hair.
  • Eyelashes are cut away
A

Repairing Hair Regions

Restorative Art (37 decks)

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