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Dental Assisting
Dental Assisting test 3
| Question | Answer |
|---|---|
| What is the most common dental chair position for dental procedures | Supine |
| Where is the dental light directed when positioning the light and turning it on prior to treatment | over the patient's mouth |
| When the operator is positioned correctly the thighs are what to the floor | parallel |
| What classification of motion is described as movement of fingers and wrist | class II |
| What is an example of Class III motion | picking up an instrument or single object |
| What is transfer zone for a right handed operator | 3-7 o'clock |
| What is the static zone | the area directly behind the patient |
| Who delegates expanded functions to the dental assistant | another dental assistant |
| What type of supervision is described as the presence of the dentist in the dental office area but not, necessarily present in the same treatment room | indirect supervision |
| What is the suggested positioning for the right handed operator when treating the maxillary right buccal surfaces of the teeth | 10 to 12 o'clock position |
| What is the preparation of the dental treatment area for a patient's arrival | Review the patient record, have knowledge of upcoming procedures have supplies and equipment ready to go |
| How do you identify the process of preparing a dental treatment room for a procedure | The treatment room is clean, disinfected and ready for the next patient, sterile preset tray and other supplies in place |
| How do you define proper ergonomics of the dental team during patient treatment | Correct equipment, sequencing instruments by their use correct positioning of the patient to minimize fatigue |
| Class I | movement of fingers only |
| Class ll | movement of fingers and wrist |
| Class lll | movement of finger ,wrist and elbows |
| Class lV | use of entire arms and shoulder |
| Class V | use of entire upper torso |
| Operator's zone | 7 to 12 o'clock |
| transfer's zone | 4 to 7 o'clock |
| Assistant's zone | 2 to 4 o'clock |
| Static zone | 12-2 o'clock |
| Can you describe the instrument transfer process | when the dentist is doing a procedure and transferring instruments back and fourth to the assistant within the transfer zone |
| What are three grasps used by the operator | modified pen grasp, palm grasp, palm thumb grasp |
| What are the three levels of supervision with? | direct, indirect, and general supervision |
| How do you describe a fulcrum | a finger rest that stabilizes the hand |
| What are 2 challenges associated with mirror vision | being able to maintain posture and to complete specific functions |
| Hand instruments are designed with three specific parts the three parts include the handle, shank and the | working end |
| What does the third number of the G.V. Black instrument formula describe | thickness of the blade |
| Which term describes the design of the tip of the explorer | thin wire like |
| The working end of the probe is calibrated in | inches |
| Which instruments are set up for every procedure and also called the exam set up | mirror, probe, explorer |
| Which instruments are placed on the tray set up after the exam set up | hand cutting instruments |
| Which instrument is a restorative instrument containing two wells on either end to transport amalgam | amalgam carrier |
| What restorative material is made from anodized aluminum and Teflon | amalgam |
| This is a small glass bowl with different sized wells on either side used to hold dental matierals | amalgam well |
| Which instrument is the instrument choice to remove excess dental materials from interproximal spaces | spoon excvator |
| What are the three parts of a dental hand piece | handle shank and the blade |
| What are the four classifications of dental hand instruments | exam hand cutting restorative and accessory |
| what is the definition of the term mandrel | metal shaft on which a sandpaper disk is mounted |
| When were rotary instruments introduced to dentistry | 1940s |
| Which handpiece is considered the most versatile hand piece used in dentistry | Laser handpiece |
| Low speed handpiece is available in speed ranging from 10,000 RPM to | 30,000 RPM |
| Which handpiece is used by the dentist in every restorative procedure | Hi speed handpiece |
| How many RPMs can the high-speed handpiece reach | 450,000 RPM |
| What mechanism is used to hold the bar in a high-speed handpiece | Mandrel |
| Which uses the mechanical radiant energy of water and sound vibration create a pulsating effect on the tooth surface | Ultrasonic handpiece |
| Which handpiece uses a beam of light to caturize soft tissue or vaporize decayed tooth surface | Laser handpiece |
| Because it comes into contact with blood saliva and tissue and must be sterilized before reuse the dental handpiece is identified as a | Critical instrument |
| What is the difference between operatory lab and finishing burs | Finishing burs have cutting edges close together lab burs are used for adjusting dental appliances in the laboratory procedures |
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