Jan 25, 2022  
2021-2022 College Catalog 
2021-2022 College Catalog
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DLT 102 - Non-Metallic Dental Materials

3 Credits, 3 Contact Hours
3 lecture periods 0 lab periods

Principles of chemistry and physics, identification, selection, and manipulation of non-metallic dental materials. Includes an introduction to dental materials, management of materials, impression material, gypsum materials, dental waxes, refractory materials, and acrylic resin.

Prerequisite(s): DLT 101  and DLT 101LB , or concurrent enrollment.
Information: Consent of program director is required before enrolling in this course.

Course Learning Outcomes
  1. Make appropriate selections and safely manipulate non-metallic dental materials to meet specific restorative requirements.

Performance Objectives:
  1. Identify chemical and physical properties of matter and materials.
  2. Identify and interpret Material Safety Data Sheets (MSDS) provided by manufacturers.
  3. Select and properly use Personal Protective Equipment (PPE) based on the MSDS.
  4. Manage materials inventory system.
  5. Demonstrate safe materials storage and handling.
  6. Identify and disinfect dental impression materials.
  7. Describe and manipulate various impression materials.
  8. Select gypsum materials based on prescription and the work to be performed.
  9. Prepare, box, and pour elastic, plastic, and rigid impression materials.
  10. Describe and manipulate gypsum products.
  11. Prepare and pour dentulous and edentulous study and working casts using gypsum products.
  12. Select dental waxes based on prescription and work to be performed.
  13. Demonstrate safe use of dental waxes.
  14. Demonstrate and correct for wax discrepancies such as shape memory and cooling contraction.
  15. Select refractory materials based on prescription and the material to be cast fired or soldered.
  16. Describe and manipulate refractory materials.
  17. Describe methods of controlling expansion of refractory materials.
  18. Identify and select acrylic resin materials based on prescription and work to be performed.
  19. Demonstrate proper technique for the use of acrylic resins.

  1. Introduction to Dental Materials
    1. American Dental Association (ADA) specifications
    2. Properties of matter
    3. Physical and chemical properties required for dental materials
    4. Precautions for handling materials/hazardous substances/Occupational Safety and Health Administration (OSHA) Regulations, PPE, MSDS
    5. Safe use of laboratory equipment
  2. Management of Materials
    1. Inventory systems
    2. Material storage
      1. Safety
      2. Shelf life
  3. Impression Material
    1. Identification of impression material types
      1. Agar hydrocolloid (reversible hydrocolloid)
      2. Rubber impression materials and elastomers
      3. Alginate
    2. Impression trays
    3. Disinfection of dental impressions
    4. Model duplication
  4. Gypsum Materials
    1. Identification and selection of gypsum material
      1. Plaster
      2. Articulating plaster
      3. Orthodontic plaster
      4. Hydrocal
      5. Laboratory stone
      6. Die stone
    2. Manipulation and use of gypsum materials
      1. Powder water ratio
      2. Water temperature
      3. Setting expansion
      4. Preliminary set
      5. Final set
      6. Crush strength
      7. Crystalline structure
      8. Laminar flow, vibration, and the bubble free model
    3. Pouring study, preliminary, and working models
    4. Trimming poured casts
  5. Dental Waxes
    1. Identification and selection of dental waxes
    2. Safe heating and use of dental wax
    3. Correcting for wax discrepancies
      1. Cooling contraction
      2. Shape memory
  6. Refractory Materials
    1. Identification and selection of refractory materials
      1. Casting investment
        1. Gypsum bound
        2. Phosphate bound
        3. Crystobalite
      2. Soldering investment
      3. Refractory dies
    2. Manipulation of refractory materials expansion control
      1. Burnout temperature
      2. Powder water ratio
      3. Special liquid water ratio
  7. Acrylic Resin
    1. Identification and selection of acrylic resins
      1. Non autopolymerizing acrylic resin
      2. Autopolymerizing acrylic resin
      3. Denture base resin
      4. Orthodontic resin
      5. Repair and reline resin
      6. Custom tray material
    2. Manipulation of acrylic resin materials
      1. Salt and pepper technique
      2. Dough technique
      3. Heat cure
      4. Pressure pot cure

Effective Term:
Fall 2016

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