DNMATL1
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| 🇬🇧 | 🇬🇧 |
| The Study of composition and properties of dental materials and the manner in which they interact with the environment they are placed | Science of Dental Materials |
| Requires the use of variety of materials that are available which requires proper selection and evaluation | Dental procedures |
| Normal Temperature of Oral Cavity | 32C to 37C |
| Apply forces to the dentition | Muscles of mastication |
| Classification of Dental Materials: to prevent any pathology(disease), cavities, infections | Prevention |
| Classification of Dental Materials: aims to provide resistance to the progression of caries | Preventive dentistry |
| Application of fluoride in paste form | Fluoride Therapy |
| Effective at controlling Dental Carries and Periodontal Problems using chemotherapeutic agents such as dentrifices and mouthwashes | Brushing of teeth |
| Combination of two or more metallic elements to give strength and resistance to corrosion | Dental alloy |
| 3 kinds of dental alloys: 25% noble material | Semiprecious |
| Inorganic, non-metallic materials made by man by the heating of raw minerals at high temperatures | Dental Porcelains |
| Too much fluoride leads to | Fluorosis |
| PROPERTIES OF DENTAL MATERIALS: are based on the laws of physics that describe mass, energy, force, light, heat, electricity, and other physical phenomena. | Physical Properties |
| PROPERTIES OF DENTAL MATERIALS: is a characteristic of matter that may be observed and measured without changing the chemical identity of a sample. | Physical Properties |
| Density unit | G/cm2 |
| Viscosity is measured in | Grams/meter/second |
| To test the setting time or the hardness of the material | Gilmore needle |
| Test being used in measuring the hardness of particular dental material | Brinell test, Rockwell test, Vickers test, Knoop test |
| Relationship between hardness and abrasion resistance | Directly proportional |
| Physical Properties: Passage of a substance into the interior of another by solution or penetration | Absorption |
| Flatter shape indicates | More wetting |
| Thermal Properties: a measure of how much it expands per unit length if heated one degree higher. | Linear coefficient of thermal expansion: |
| The change in length per unit length of the material for a ______Celsius change in temperature | 1 degree |
| Best type of crown that is being placed in the mouth of the patient | Porcelain fused to metal |
| Thermal Properties: The expansion or contraction of a material due to temperature changes. | Thermal Dimensional Change |
| Leads to marginal leakage, discoloration, hypersensitivity and recurrent caries | Marginal percolation |
| Thermal Properties: The rate of heat flow through a material. | Thermal Conductivity |
| Thermal conductivity: poor thermal conductors | Enamel and dentin |
| Electrical Properties: The ability of a material to conduct the electrical current. | Electrical Conductivity |
| Test for vitality | Electric pulp testing |
| Is a color space that specifies colors based on three properties of color: hue, value (lightness), and chroma(color purity) | Munsell Color System |
| System to measure colors. | Munsell Color System |
| Value increases from | Bottom to top |
| Chroma increases from center | Outwards |
| Properties of materials in relation to light transmission and absorption: e.g. glass, pure acrylic resin | Transparency |
| Materials absorb all light colors. | Black color |
| Materials reflect all light colors. | White color |
| Display fluorescence | Natural teeth |
| Refers to the physical properties of a material when it is deformed by elastic or inelastic behavior when mechanical forces are used | Mechanical Property |