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19 Cards in this Set
- Front
- Back
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The purpose of wearing oral appliances for OSA IS to modify the position of airway structures so that:
a. The airway is enlarged b. the airway is reduced c. collapsibility is reduced. d. both a and c e. both b and c |
d. both b and c
The coal of oral appliance therapy is to enlarge the airway and to reduce its collapsibility to maintain an adequate airway during sleep. Reducing the airway would make it more difficult to maintain adequate breathing. |
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2. Patients wearing an oral appliance during sleep have NOT demonstrated a/an:
a. increase in periodontal disease b. decrease in periodontal disease c. frequent occurrence of periodontal abscesses. d. change in periodontal health |
d. change in periodontal health
According to published research, patients wearing an oral appliance during sleep have demonstrated no change in their periodontal health. There have been no increases in periodontal conditions or diseases reported with use of oral appliances. |
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Athletic mouthguards may prevent a concussion, However they must be worn correctly and consistently.
a. Both statements are true b. Both statements are false c. The first statement is true; the second statement is false d. The first statement is false; the second is true |
a. Both statements are true
Athletic mouthguards, when worn correctly and consistently, may prevent a concussion by aiding absorption of the dynamic pressures of head trauma. |
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Nightguards are worn to:
a. prevent dental caries b. alleviate tooth surface wear c. provide minor tooth movement or stabilization d. temporarily hold teeth in position |
b. Alleviate tooth surface wear
Nightguards are worn to alleviate tooth surface wear by absorbing occlusal pressure that occurs from grinding teeth during sleep. Nightguards have not been reported to decrease dental caries. Orthodontic appliances may be worn to provide minor tooth movement or teeth stabilization. Space maintainers temporarily hold teeth in position. |
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Dental professionals fabricate stock mouthguards. Custom-made mouthguards can be purchased at most athletic and drug stores.
a. Both statements are true b. Both statements are false c. The first statement is true; the second statement is false d. The first statement is false; the second is true |
b. Both statements are false
Stock mouthguards are premade, in various sizes, and may be purchased at athletic and department stores. Custom mouthguards are fabricated by dental professionals to fit the patient's arch; They require an impression and cast. |
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Themoplastic Material will ____ on heating and ____ on cooling.
b. Harden; soften c. Harden; stay hard d. Soften; melt |
a. Soften, re-harden
Thermoplastic materials will soften on heating and harden on cooling, this makes them ideal for adapting to an individual. |
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Patients may clean oral appliances with a soft-bristled wet toothbrush. No commercial products are available in which to soak oral appliances.
a. Both statements are true b. Both statements are false c. The first statement is true; the second statement is false d. The first statement is false; the second is true |
c. The first statement is true; the second statement is false.
Wet, soft-bristled toothbrushes are recommended to clean oral appliances. Commercial liquid cleaners are also available for soaking. Hot water is not recommended because of possible distortion of the appliance. |
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Mouth protectors can be: a. Custom-made b. Stock c. "Boil-and-bite" d. All of the above |
d. All of the above
Mouth protectors can be custom-made by dental professionals, bought at a store in a pre-sized selection (stock mouthguard), and prepared through the "boil-and-bite" method by the individual. |
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Space maintainers are used to:
a. alleviate bruxism b. hold the tongue in proper positioning. c. temporarily hold teeth in position d. alleviate OSA |
c. temporarily hold teeth in positioning
Space maintainers are used to temporarily hold teeth in position. For example, if a deciduous molar is prematurely lost, a space maintainer may be used to keep the adjacent teeth from moving into the where the tooth is missing. Nightguards are worn to alleviate bruxism. Custom bleaching trays are designed to hold bleach solutions. Sleep apnea is alleviated by an appliance that enlarges the airway. |
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Athletic mouth guards should be properly fitted, stay in place comfortably, be made of resilient material approved by the U.S Food and Drug Administration and:
a. be physiologically compatible with the wearer b. have a fresh scent. c. increase the amount of force placed on the occlusion d. be worn on the mandibular arch |
a. be physiologically compatible with the wearer
It is vital that the athletic mouthguard be compatible with the athletes dimension so that the force be absorbed by the appliance and the athlete will be more likely to wear the appliance when needed. In most cases, athletic mouthguards are fabricated for maxillary teeth. |
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When fabricating oral appliances, which of the following oral anatomical structures should be necessarily replicated?
a. sulcus b. periodontal ligaments. c. gingival contours of the teeth. d. soft palate. |
c. gingival contours of the teeth.
The gingival contours of teeth should be detailed, or replicated in oral appliances because they are needed to help the appliance fit properly and aid with retention. The sulcus and periodontal ligaments are essentially subgingival and do not aid in retention of the appliance. The soft palate is located posterior to the hard palate, and is not adjacent to the teeth so it would not help retain the appliance. |
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Fluoride custom trays are recommended for which of the following patients?
a. elderly patients with severe periodontal disease d. three-year-old patient with early childhood caries. c. adult patient undergoing head and neck radiation. d. adolescent patient with severe halitosis |
c. adult patient undergoing head and neck radiation therapy.
An adult patient undergoing radiation for head and neck cancer is at increased risk for dental caries. Fluoride will not aid in the treatment of halitosis, or periodontal disease. A 3-year-old may not be complaint in the use of custom trays and there is an increased risk of ingesting fluoride. |
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Immediately after an impression is taken, it must be rinsed under running water to remove saliva or blood, this step is essential before the impression can be disinfected.
a. Both statements are true b. Both statements are false c. The first statement is true; the second statement is false d. The first statement is false; the second is true |
a. Both statements are true.
All blood and saliva must be clean from any item before application of a disinfectant because they inhibit disinfection. |
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Chairside adjustments of applications may be performed with a unit dose of abrasive, a sterile handpiece, and bur, and a sterile rag wheel for polishing. this eliminates the need to disinfect the appliance before handling.
a. Both statements are true b. Both statements are false c. The first statement is true; the second statement is false d. The first statement is false; the second is true |
a. both statements are true.
Disinfecting appliances is not indicated when adjustment at chairside are performed as long as sterile handpieces, burs, and rag wheels are used. |
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All but one of the following steps must be performed when disinfecting a removable dental appliance before making laboratory adjustments. Which is the EXCEPTION?
a. handing contaminated appliance with gloved hands b. cleaning ultrasonically by placing the appliance directly into solution in the ultrasonic unit holding tank c. rinse underwater d. shake to remove excess water e. disinfect the appliance by spraying it with, or immersing it in, an acceptable disinfect and then allowing contact for the time specified by manufacturer.
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b. cleaning ultrasonically by placing the appliance directly into solution in the ultrasonic unit holding tank
Do not clean ultrasonically by placing appliance directliy into solution in the ultrasonic holding tank. All other statements must be followed. When cleaning the appliance in an ultrasonic unit, however, the appliance must be placed in a leak proof zippered bag or sterile glass beaker that contains fresh ultrasonic solution. Then, the bag or beaker is placed in the solution in the holding tank. This will prevent cross-contamination during cleaning. |
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In the laboratory, when polishing dentures that have been worn by a patient, it is not necessary to use a sterile rag wheel. This is because the dentures will be disinfected before and after any adjustment is made.
a. both the statement and reason are correct. b. Neither the statement nor the reason is correct. c. The statement is correct, but the reason is not. |
b. Neither the statement nor the reason is correct.
Even though a dental prosthesis is disinfected before making adjustments with a rag wheel in the laboratory, and before returning the prosthesis to the patient, there is still potential for cross-contamination between patients if a sterile rag and wheel is not used in each patient's prosthesis. |
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After chairside adjustments are made to a dental prosthesis, it is cleaned, disinfected, rinsed, and stored. The recommended storage method is:
a. placement of the prosthesis back on patient's cast stone b. An individual sized plastic closed container for each patient, similar to those used for overnight soaking. c. a zipper plastic bag containing mouthwash and water. d. a zipper plastic bag containing sterile water. |
c. a zipper plastic bag containing mouthwash and water.
A zipper plastic bag containing mouthwash and water is the recommended storage method. Water is needed for hydration and to prevent distortion. The mouthwash provides a pleasant taste for the patient. The patient's cast stone would not be clean. An individualized, closed container, (denture cup) must have a liquid in it to prevent distortion of the prostheses. |
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The primary goal of infection control when handling and disinfecting impressions, dentures, and appliances is to:
a. protect the patient from the laboratory personnel b. protect the laboratory personnel from the patient c. prevent cross contamination d. prevent contamination of equipment in the dental laboratory. |
c. prevent cross-contamination
The primary goal is to prevent cross contamination. This includes protecting the patient and laboratory personnel from each other, as well as the dental office staff and laboratory equipment. |
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Disinfection by immersion is preferred over isinfection by spraying. the most improtant reason is because:
a. office personnel don't have the necessary time available to spray thoroughly b. the spray procedure must be performed twice, with ten minutes in between. c. constant contact of the spray with the all surfaces of the impression cannot be assured. d. The aerosol produced is usually toxic. |
c. constant contact of the spray with the all surfaces of the impression cannot be assured.
when using a spray, constant contact of the spray with the all surfaces of the impression cannot be assured. Spraying twice is not a recommended method, and only the aerosol of grutaraldehyde is considered toxic. |
