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76 Cards in this Set
- Front
- Back
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Indirect Restorations |
Made outside of the patients mouth then placed in mouth Examples: Crowns and Bridges |
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Direct Restorations |
Made and placed directly in the patients mouth Examples: Amalgams and Composites |
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Adhesion |
The joining of two objects |
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Bonding |
The process of using a substance, or to join two objects together |
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Curing |
The process which a dental material hardens or sets |
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Light-Cured |
Requires a special light which is held over the material after it is placed in the oral cavity (Composites) |
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Self-Cured |
Materials DO NOT require light or heat, it will harden due to a chemical reaction (Acrylic) |
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Dual-Cured |
Use a combination of light-curing and self-curing |
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Flow or Creep |
Materials change shape when pressure or force is applied to them Example: Wax changes shape with pressure |
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Viscosity |
How easy the liquid moves or flows Example: Water is less viscous than syrup |
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Wettability |
The degree to which matter can be wetted so that is can spread across a solid surface |
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Solubility |
The degree to which matter dissolves and breaks apart when it is wet |
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Elasticity |
The ability of dental materials to change shape when force is applied and then return to their original shape when the force is removed |
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Hardness |
How well a material can resist scratches or marks |
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Stress |
The force or pressure |
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Resistance |
The degree a material can hold up against force or stress |
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Strain |
When there is low resistance and high stress |
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Ductility |
When a material stretches out or lengthens |
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Corrosion |
A chemical process that happens when metal mixes with water |
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Galvanism |
When TWO dissimilar metals contact water, they are connected electrically |
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Retention |
The way dental materials are held in place |
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Mechanical |
Creating grooves on the tooth surfaces so a restoration holds in place |
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Chemical |
Uses chemical to hold a restoration in place |
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Tensile Strength |
The amount of force or pulling that material can resist without tearing or falling out of place |
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Acidity |
The amount of acid in a substance |
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Microleakage |
Saliva or food particles can leak into small spaces between the tooth and the restoration |
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Zinc Oxide Eugenol (ZOE) |
Type I - Used for temporary restorations Type II - Used as a base (Permanent) (Roll into a ball) CANNOT be used under composite restorations ZOE Cement: Paper pad & metal spatula ZOE Base: Glass slab & metal spatula |
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Zinc Phosphate |
Can damage the pulp Releases heat when mixed (Exothermic reaction) Glass slab, metal spatula |
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Polycarboxylate |
Must be mixed and applied quickly Liquid evaporates quickly Paper pad & metal spatula |
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Glass Ionomer |
Releases fluoride into the tooth Does NOT irritate the pulp Paper pad & plastic spatula |
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Composition of Amalgam |
Silver, Tin, Zinc, Copper, Mercury |
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Mercury-To-Alloy Ratio |
If the ratio is 1:1 then it is called Eames technique |
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Amalgam Sizes |
400 mg single spill - Small surface restorations 600 mg double spill - Medium sized restorations 800 mg triple spill - Large restorations |
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Trituration |
Mixing the mercury and alloy |
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Amalgam or Triturator |
The machine used to mix amalgam |
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Handle |
Composes most of the instrument |
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Shank |
Connects the handle to the working end |
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Working End |
Carries out the function of the instrument |
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Composite |
Tooth colored filling material |
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Fillers |
Can make up 80% of the composite |
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Macrofilled |
Largest particle size |
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Microfilled |
Small particle size |
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Hybrid Composite |
Contain large and small particles |
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Nano-fils |
Different sizes of very small particles |
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Flowable Composite |
Low viscosity |
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Cavity Wall |
The internal surface of the restoration |
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Axial Wall |
An internal wall that runs parallel to the long axis of the tooth |
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Pulpal Wall/Floor |
Internal wall that runs perpendicular to the long axis of the tooth |
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Gingival Wall |
INternal wall near the gingiva running perpendicular to the long axis of the tooth |
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Enamel Wall |
External wall that includes the enamel |
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Dentinal Wall |
External wall that includes dentin |
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Line Angle |
Angle formed by the intersection of 2 surfaces |
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Point Angle |
3 or more surfaces or walls intersect |
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Cavosurface Margin |
The intersection between the preparation surface and the healthy tooth surface |
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Outline Form |
The shape of the cavity prep |
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Resistance Form |
The internal shape of the restoration |
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Retention Form |
The undercuts placed in the prep to hold the restoration in place |
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Convenience Form |
The outline form needs to be enlarged in order to gain access |
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Class I (1) |
Pits and fissures |
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Class II (2) |
Extend into the mesial and/or distal surfaces on the molars and premolars |
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Class III (3) |
Only on anterior teeth (Canine to canine) Located between the teeth and does NOT contain the incisal edge |
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Class IV (4) |
Only on anterior teeth Located between the teeth and DOES contain the incisal edge |
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Class V (5) |
Can be located on ALL teeth Located on the facial or lingual surfaces close to the gum line |
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Class VI (6) |
Located on the cusp tips of posterior teeth |
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Tofflemire |
Required for Class II posterior restorations |
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Ostby Frame |
Circular or oval frame |
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Young Frame |
U-Shaped metal frame |
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U-Frame |
U-Shaped frame made from radiolucent plastic |
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Dental Dam Punch |
1 is the smallest, 6 is the largest 2 - Mandibular incisors and maxillary laterals 3 - Premolars, canines, maxillary central incisors 4/5 - Molars 6 - For the clamped tooth |
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Bow |
Arched metal portion, the bow should be placed towards the distal |
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Jaws |
The portion that grips the tooth |
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Anchor Holes |
Used to open and close the clamp |
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Winged Clamps |
Have small metal extensions for stability |
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Wingless Clamps |
Marked with a W and have no wing projections |
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Cervical Clamps |
Used for the anterior teeth and help retract the gingiva |
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Pediatric Clamps |
Smaller clamps for children |
