BSI BS 3886:1965

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Specification for dental impression compound

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BSI BS 3886:1965

Specification for dental impression compound

PUBLISH DATE 1965
PAGES 12
BSI BS 3886:1965

This British Standard specifies requirements for dental impression compound (excluding elastic type of compound) suitable for taking impressions in the oral cavity.

Specific requirements for dental impression compound (excluding elastic type of compound) suitable for taking impressions in the oral cavity include:

  • Thermoplastic properties: It should become soft and plastic at a temperature safe for oral tissues and harden upon cooling without distortion.
  • Non-toxic and non-irritant: The material must be safe for contact with oral mucosa, causing no irritation or allergic reactions.
  • Good flow characteristics: When softened, it should flow adequately to capture fine details of the oral structures.
  • Dimensional stability: It should maintain its shape and dimensions after cooling, ensuring accurate impressions.
  • Ease of manipulation: The material must be easy to handle, mold, and remove from the mouth without sticking to tissues.
  • Rigidity after setting: Once hardened, it should be sufficiently rigid to resist distortion during removal and handling.
  • Compatibility with other dental materials: It should not adversely affect or interact with dental stones, plaster, or other materials used in model fabrication.
  • Repeatability: It should allow for repeated softening and hardening cycles without degradation in quality.
  • Color and visibility: The compound should be colored distinctly to enable clear visualization of the impression and aid in detecting defects.
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