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NC DENTAL U FINAL EXAM QUESTIONS
AND ANSWERS RATED A+
The agents that provide a temporary numbing effect on nerve endings located on the surface of the oral mucosa are ✔✔topical anesthetic
The examination of the cheeks, mucosa, lips, palate, tonsil area, tongue, and floor of the mouth to detect any abnormalities is the _____ examination. ✔✔soft tissue exam
The procedure most frequently used to relieve pain in dentistry is ✔✔local anesthetic
Charting with a color-coding system specifies that _____ is used for dental treatment that has been completed and _____ is used for dental treatment that needs to be completed. ✔✔blue, red
Using Black's classification of cavities, a pit and fissure on the occlusal surface of molars and premolars are considered a class _____ restoration or cavity. ✔✔ 1
What can cause a sterilization method to fail? ✔✔- improper instrument cleaning
- sterilization malfunction
(all of the above)
T/F During disinfection all spores are killed ✔✔False
__ is administered for the mandibular teeth near a major nerve that numbs the entire area served by that nerve branch ✔✔block anesthesia
The parts of the anesthetic syringe include ✔✔-thumb ring, finger grip, finger bar
-harpoon
-piston rod
-barrel
-threaded tip
(all of the above)
Nitrous Oxide/ oxygen analgesia used in dentistry dates back to 1844 and is also referred to as ✔✔inhalation sedation
(all of the above)
Which living tissues of the tooth are made of blood vessels and nerves ✔✔pulp
Which of these tissues make up the periodontium ✔✔- cementum
- alveolar bone
- periodontal ligaments
(all of the above)
T/F To assist in describing their location and function, the teeth are described as being mesial and distal in the mouth ✔✔False
T/F In the universal number system, premolars, also known as cuspids are numbered 6, 11, 22, 27 ✔✔False
The most resistant form of life known is ✔✔Spores
Which of the following viral diseases is (are) a concern in dentistry ✔✔- hepatitis B
(all of the above)
Another name for airborne transmission is ✔✔droplet infection
Pathogens that are carried in the blood and bodily fluids of infected individuals and that can be transmitted to others are referred to as ✔✔bloodborne
T/F There are at least five types of viral hepatitis ✔✔True
T/F The herpes virus is transmitted through direct contact with lesions or with infectious saliva ✔✔True
Dental assistants should be immunized for ✔✔Hepatitis B
T/F Bond is an example of a type 1 ZOE cement ✔✔True
The class II restoration requires a matrix band to act as an artificial wall that must make proper contact with the adjacent tooth; this is accomplished by ✔✔- using a wedge in the lingual embrasure
- contouring the center of the matrix band in the proximal contact area
- the dentist's design of the interproximal cavity prep
(all of the above)
T/F Fast set alginate has a working time of 1 1/4 mins ✔✔True
T/F When taking a preliminary impression, the next step after seating the patient is to begin mixing the alginate ✔✔False
T/F Two reasons dentists prefer to use plaster for the making of diagnostic casts are; it is easy to mix and the material has a long shelf life ✔✔False
T/F The bite registration can be used by the dental laboratory technician to establish the proper centric relationship when fabricating the permanent crown ✔✔True
T/F A preliminary impression may be separated from the dental model within 15 mins after it has been poured ✔✔False
Under equal employment opportunity regulations, employers cannot ask you questions regarding ✔✔- religion
- race
- child care arrangements
Which of the following are members of the dental healthcare team ✔✔both dentist and dental assistant
The ADA recognizes how many dental specialties ✔✔ 9
The dental team member who assesses the patient's oral health needs and who is legally responsible for the care of the patient is the ✔✔dentist
T/F The minimum education required for a dental hygienist is two academic years of college ✔✔True
- The dental assistant must be legally qualified
(all of the above)
After instruments have been through the cleaning cycle of the ultrasonic cleaner, they should be: ✔✔rinsed with clean water
Process indicators that change color are useful for: ✔✔Identifying instrument packs that have been exposed to certain temperatures and determining whether an instrument package has been processed
The best way to determine that sterilization has actually occurred is to use: ✔✔biologic monitors
The theory of team dentistry, also referred to as _____, is based on the concept of the chairside dental assistant being seated across from the dentist and the two of them working together as a team. ✔✔four handed dentistry
Using the operating zones based on the "clock concept", the assistant's zone for a right handed operator is: ✔✔2 to 4 o'clock
The transfer zone is the area where: ✔✔instruments and dental materials are exchanged
Basic instrument grasps include which of the following? ✔✔- pen grasp
- palm grasp
- palm-thumb grasp
(all of the above)
Instruments with hinges are transferred: ✔✔-using a two handed transfer
- by holding them at the hinge
- by directing the handles into the dentist's palm
(all of the above)
When performing a single handed instrument transfer with a right handed dentist, the dental assistant transfers the dental instrument with: ✔✔the left hand
T/F Using the clock concept for a right handed operator, the static zone is located from 2 o'clock to 4 o'clock ✔✔False
T/F Before cotton rolls are removed from the mouth they should be moistened with water from the air-water syringe ✔✔True
Critical information that the dental team must have before providing the dental treatment or care includes: ✔✔- patient registration (personal patient information)
- medical-dental health history (overall health status)
- medical alert information (medical concerns for patients)
(all of the above)
Condition that results from chronic overexposure to fluoride is known as: ✔✔fluorosis
Dental professions generally recommend that patients use __ toothbrushes ✔✔soft bristled
Sealants should not be used in which of the following ✔✔- obvious dental decay or any proximal surface decay
- primary teeth that will be lost soon
- poor patient cooperation in the dental chair or a lack of pits and fissures
(all of the above)
Dental sealants should be used as part of a preventive program that includes: ✔✔- flourides
- dietary considerations
- plague control
(all of the above)
Enamel that has been etched has the appearance of being: ✔✔Frosty/chalky
T/F A trophy angle is used for polishing teeth and is attached to the straight handpiece ✔✔True
T/F The high-speed handpiece is used for the reduction of tooth structure, preparation of the tooth, and removal of decay ✔✔True
T/F The purpose of running the high-speed handpiece for the 20-30 secs before using the handpiece is to cool the handpiece ✔✔False
The silver filling material used for more than 150 years to restore primary and permanent teeth is called ✔✔amalgam
The four levels of organization in the human body arranged from smallest to largest are: ✔✔- Cells
- Tissues
- Organs
- Body systems
Which nerve is the primary source of innervation for the oral cavity? ✔✔Trigeminal
Bone that forms the prominence of the cheek: ✔✔Zygomatic
The __ is the space between the teeth and the inner mucous lining of the lips and cheeks ✔✔vestibule
The mouth can be divided into four sections called ✔✔quadrants
The __ are the longest teeth in the human dentition and are used for cutting and tearing ✔✔canines
The __ are used for chewing and grinding food ✔✔molars and premolars
The dental lab technician follows a written prescription from the dentist to fabricate a casting. The prescription contains which of the following information? ✔✔- Type of prosthesis, type of materials to be used, name of patient
- Exact shade and anatomic characterization, if required
- Dentist's name, license number, address, phone number, and signature
(all of the above)
A removable prosthesis that replaces all of the teeth on a dental arch is a: ✔✔removable complete denture
Retention of a maxillary denture depends on the suction seal from which element? ✔✔post dam
T/F Prosthodontics is composed of two specialty areas in dentistry: implanting and removable prosthodontics ✔✔False
Pin retention is placed ✔✔before the core buildup
T/F Regular recall visits are optional once the patient has received the removable partial denture, because the patient only has the remaining abutment of teeth left and there is nothing to clean ✔✔False
Which of the following may be used as a surface barrier material? ✔✔- plastic bag
(all of the above)
The method to deal with surface contamination: ✔✔By using a surface barrier to prevent the surface from becoming contaminated and by precleaning and disinfecting the surface between patients
The purpose of precleaning a surface is: ✔✔Reduce the number of microbes and remove blood, saliva, and other body fluids.
Disinfectants used in dentistry must: ✔✔be registered with the EPA and be registered as hospital disinfectants with tuberculocidal claims
T/F The CDC registers, categorizes, and regulates disinfectants and chemical sterilants ✔✔False
T/F An iodophor is an EPA registered intermediate-level hospital disinfectant with tuberculocidal action ✔✔True
T/F A synthetic-phenol compound is a broad-spectrum disinfectant, meaning it can kill a wide range of microbes ✔✔True
T/F Alcohol is widely used in dental offices for disinfecting operator areas that have minimal contact during dental procedures ✔✔False
T/F If a surface is accidentally touched during the removal of the surface barrier, the surface must be precleaned and disinfected ✔✔True
The ideal treatment processing area should be: ✔✔dedicated only to instrument processing
There are areas of the instrument processing facility that govern the workflow pattern. The processing should flow in a single loop from: ✔✔dirty to clean to sterile to storage
