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61 Cards in this Set
- Front
- Back
What is the most common acrylic monomer? |
Methyl Methacrylate |
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When were acrylic resins first used in dentistry? |
1940's |
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What does cross linking do to an acrylic resin? |
Improves mechanical properties and toughness |
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Name three types of resin systems used in dentistry |
Cold cure/Chemical Heat cure Light activated/Dual Cure |
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Complete Dentures are held in place by? |
Suction |
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Porcelain teeth in dentures are rarely used because they...? |
Wear opposing teeth, make noise |
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What is the first step in constructing a denture? |
Take impressions, construct baseplate and wax rims |
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What determines the patient's midline? |
Wax Rims |
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When the denture teeth are set in wax it is called the ? |
Denture Setup |
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Partial dentures are supported by what? |
Natural teeth and alveolar ridge |
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What part of the partial denture goes around the abutment teeth? |
Clasps |
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How can the fit of an old denture be improved? |
Relining |
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What is an immediate denture? |
Denture placed at the same appt where teeth are extracted |
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How can a dental hygienist help keep a denture clean? |
Remove calculus |
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What is an edentulous atrophic mandible? |
Pt has no teeth, alveolar bone has resorbed |
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Name three contraindications for implants |
Smoking, diabetes, inability to maintain implant |
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Name five materials that have been used for implants |
Gold, ceramic, polymers, titanium, apatite-coated titanium |
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What is the most common implant material? |
Titanium |
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Name three types of implants |
Endosseous, transosseous, subperiosteal |
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Which type of implant is the most commonly used? |
Endosseous |
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Which type of implant has been used to stabilize a mandibular denture? |
Subperiosteal (and transosseous) |
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What is osseointegration? |
Attachment of molecules, fibers, cells, and tissues to implants |
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In preparing the bone for an implant it must not be heated more than __ degrees? |
117 |
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What are the four stages in placing an implant? |
Implant, Abutment, Cylinder, Crown |
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Who is responsible for plaque control on the implant? |
The patient |
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Why shouldn't a hygienist use conventional instruments with implants? |
Metal damages the implants |
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Name three uses of implants in dentistry |
Crowns, bridges, stabilize dentures |
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The removing of material by a shearing off process |
Cutting |
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The wearing away of a surface |
Abrasion |
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Producing the final shape and contour |
Finishing |
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Reducing the sizes of scratches by using a series of finer abrasives |
Polishing |
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A mild abrasive made of calcium carbonate |
Chalk |
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An abrasive made of silica like volcanic glass |
Pumice |
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An abrasive used for metallic restorations such as amalgam |
Tin Oxide |
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A common abrasive used in dentistry on disks, and strips |
Aluminum Oxide |
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The most abrasive material |
Diamond |
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Used in crown preparations |
Diamond burs |
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Vehicles used to make pastes from powder |
Water, alcohol, and glycerin |
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Name five factors that affect the rate of abrasion |
1. Hardness 2. Size 3. Shape 4. Pressure 5. Speed 6. Lubrication |
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Name four reasons why we polish |
Adhesion Make surface smooth Increase esthetics Reduce corrosion |
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Polishing agents remove how many mm of the fluoride-rich layer |
3-4 |
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Air powder polishing is used to remove? |
Tobacco Stain, Biofilm |
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Name three types of abrasives used in dentifrices |
Phosphates Carbonates Silica |
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What is the most frequently used abrasive in dentifrices? |
Silica |
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What is the most conservative treatment of discolored teeth? |
Whitening |
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Name six factors that affect the success of whitening teeth |
1. Type and intensity of stain 2. Whitening agent and its strength 3. Length of exposure of tooth to whitening agent 4. Whitening technique 5. Vitality of the tooth 6. Presence of restoration in tooth |
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Name two types of intrinsic stain |
Posteruptive Preeruptive |
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Name three types of Post-eruptive stain |
Amalgam Caries Endodontic Treatment |
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Name three types of pre-eruptive stain |
Tetracycline Fluorosis Dentinogenesis/Amelogenesis Imperfecta |
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What is a pre-eruptive stain caused by an antibiotic and is difficult to whiten? |
Tetracycline |
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Name three types of whitening agents |
Hydrogen Peroxide Carbamide Peroxide Sodium Perborate |
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What is a strong oxidizing agent that decomposes into water and oxygen? |
Hydrogen Peroxide |
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Name two types of whitening techniques |
Non-vital, vital |
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Name two types of non vital whitening |
Power (heat/light) whitening Walking bleach |
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What % of H2O2 is used in walking bleach? |
35% |
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What % hydrogen peroxide is used in custom trays made by the hygienist? |
2-10% |
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Over the counter Crest Whitestrips contain ___ of hydrogen peroxide |
3-7% |
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The use of __ before and after bleaching may prevent sensitivity |
Potassium Nitrate |
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Patients with anterior restorations must be informed of what? |
Whitening will not change shade of restoration |
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Gingival sensitivity may be reduced by using __ trays |
Scalloped |
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Overbleaching could be a sign of what disorder? |
Body Dysmorphic Disorder |