Practice Test Geeks(CCA) Certified Crop Advisor Practice Test
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Techniques & Materials Flashcards

7 cards from real CCA practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Techniques & Materials flashcards as text

  1. Which intrinsic coloring technique involves mixing pigments directly into silicone before vulcanization?

    Answer: Intrinsic pigmentation

    Intrinsic pigmentation blends colorants into the silicone matrix prior to curing, producing durable color that resists wear and weathering.

  2. When fabricating a silicone auricular prosthesis, which catalyst system is most commonly used for room-temperature vulcanization?

    Answer: Tin catalyst

    Tin (condensation) catalysts are the classic choice for RTV silicone systems used in anaplastology, though platinum-cure systems are increasingly popular for their lower shrinkage.

  3. A marginal edge of a silicone prosthesis that is too thick will most likely cause which problem?

    Answer: Visible color mismatch at the transition zone

    Thick margins create a visible step that does not blend into surrounding skin, producing a color and contour mismatch that betrays the prosthesis.

  4. In prosthetic eye fabrication, which material is typically used for the scleral shell?

    Answer: Heat-cured polymethyl methacrylate (PMMA)

    PMMA (acrylic) is the standard material for ocular prostheses due to its biocompatibility, optical clarity, and ability to be polished to a high gloss.

  5. Which adhesive is preferred for silicone facial prostheses because it is water-resistant and skin-safe?

    Answer: Medical-grade silicone adhesive

    Medical-grade silicone adhesives bond effectively to silicone prostheses, resist perspiration, and are formulated to minimize skin irritation.

  6. What is the primary purpose of applying a release agent to a mold before pouring silicone?

    Answer: To prevent the prosthesis from bonding permanently to the mold

    Release agents create a barrier between the mold surface and the silicone, allowing clean separation without tearing the prosthesis.

  7. Which sculptural technique is used to replicate the fine skin-texture detail such as pores and hair follicles on a wax pattern?

    Answer: Stippling and texturing with fine brushes or dental burrs

    Stippling tools, fine brushes, and rotary instruments are used to emboss realistic skin micro-texture into the wax pattern before mold fabrication.