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A comprehensive set of practice questions and answers for the dental assistant licensure exam in minnesota. It covers a wide range of topics, including dental procedures, materials, instruments, and patient care. The questions are designed to test the knowledge and skills required for successful completion of the exam. This resource is valuable for dental assistant students preparing for their licensure exam.
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After receiving ortho treatment, what is the most commonly used retainer? - ✔✔Hawley Retainer When ortho bands and brackets are removed, what type of bur do you use? - ✔✔Finishing bur Which cement gives off fluoride? - ✔✔Glass ionomer What does a disclosing agent help detect? - ✔✔Plaque What can be used to place an arch wire? - ✔✔Weingart or Howe pliers What kind of tray is used for anterior teeth? A) Sectional B) Quadrant C) Full Arch D) Half Arch - ✔✔A) Sectional After administering N2O and obtaining post-operative vitals, how much variance from pre-operative is considered acceptable? - ✔✔Pulse- Within 10 beats Blood Pressure- Within 10 for diastolic and systolic Respirations- Within 5 breaths per minute How long can sealant material be stored for? - ✔✔ 18 - 36 months at room temperature What is the most common cause of sealant failure? - ✔✔Moisture contamination
What is in sealant material that some people can be allergic to? - ✔✔Acrylic resin What is the weakest and cheapest impression material? - ✔✔Plaster Radiographic density is defined as? - ✔✔The overall blackness or darkness of a radiograph The temperature of the Tungsten filament is affected by? A) Impulses B) Kilovoltage C) Millampres D) Time - ✔✔C) Millampres How much time do you have to mix Intermediate Restorative Material? - ✔✔1 minute What is used to remove wire ligatures? A) Explorer B) Ortho Scaler C) Hemostat D) Ligature wire cutter - ✔✔Ligature wire cutter What is the purpose of cavity varnish? - ✔✔To seal the tubules What instrument would you use to remove subgingival calculus? A) Explorer B) Sickle Scaler C) Curette D) Chisel - ✔✔C) Curette
B) Rinse C) Topical D) Stannous - ✔✔A) Rinse What is commonly found in whitening toothpaste? - ✔✔Calcium carbonate Which fluoride method isn't moisture sensitive, as in its still effective even when exposed to water? - ✔✔Varnish If you wanted to increase the positive vertical angle when taking a radiograph, what direction would you point the tube head? A) Move it closer to where the top of the head is B) Move it closer to where the chin is C) Bring it parallel to the teeth D) Move it towards the side - ✔✔A) Move it closer to where the top of the head is What is the purpose of an arch wire? - ✔✔To help guide teeth in movement How are ortho bands shaped? - ✔✔Straight towards the gingiva, slightly rounded towards the occlusal What happens if a matrix band or wedge doesn't completely cover adjacent teeth? - ✔✔It leaves an open contact area What is the ideal way to check a sealant for voids? - ✔✔An explorer N2O is metabolized through which organ? A) Kidney B) Liver C) Lungs
D) Intestines - ✔✔C) Lungs Where should the gingival retraction cord be placed? - ✔✔ 1 - 3 mm below the sulcus How long should you wait before rinsing gingival retraction paste? - ✔✔ 1 - 2 minutes If someone has cardiovascular disease, what should you treat the gingival retraction cord with? - ✔✔Aluminum chloride Which of these best describes the amnesic effect of nitrous oxide? A) The patient forgets who they are B) The patient not remembering why they are there C) Short-term memory loss D) The patient may think that less time passed than what really has - ✔✔D) The patient may think that less time passed than what really has What tooth is used when determining a person's occlusion? A) Molar B) Pre Molar C) Canine D) Lateral - ✔✔A) Molar Which of these statements are true regarding paper points? A) They are sized fine to course B) They are sized small to large C) They are color coded D) A and C - ✔✔D) A and C
A) Rim lock tray B) XCP C) Saliva ejector D) Tofflemire band - ✔✔B) XCP What is the most common stain in children? - ✔✔Green N2O is often given along with what medication? A) Serotonin B) Blood thinners C) Hypertensive medications D) Local anesthesia - ✔✔D) Local anesthesia If alginate can't be poured right away, how should it be stored? - ✔✔Wrapped in a slightly damp paper towel and bag Which topical medication do some people have an allergic reaction to? A) Lidocaine B) Xylocaine C) Benzocaine D) Septocaine - ✔✔C) Benzocaine You are working on tooth number 8 and are going to perform a nasal palatine nerve block, where would you apply topical? - ✔✔The lingual tissue adjacent to the incisive papilla If you wanted to do a mandibular nerve block, where would you place topical? - ✔✔In the depression behind retromolar area of the quadrant you are working on. This will numb 1/2 the lip, tongue, and 1/ the arch What impression material is available in both putty and syringe form? - ✔✔Polysioloxane
What size hole should you punch for the key tooth? - ✔✔ 5 When you are punching holes in a dental dam for a patient who's teeth is out of alignment, what should you do? - ✔✔Offset the holes Pulpotomy is the removal of what? - ✔✔The removal of the coronal portion of the pulp only Pulpectomy is the removal of what? - ✔✔The removal of the coral and radicular portion of the pulp What type of injection technique would you use if you only want to numb 2 or 3 teeth? A) Infiltration B) Nerve Block C) Field Block - ✔✔A) Infiltration During cement removal, you are supposed to keep drying and wetting the area, why? - ✔✔In order to remove debris What do you use to polish a porcelain restoration? - ✔✔Diamond polishing instruments Whiting is an abrasive also known as? - ✔✔Chalk When checking a sealant, a sealant that is free of moisture still isn't evenly placed. What should you do?
What is used to adjust and bend an the arch wire? - ✔✔Bird beak pliers Which dental clamp has jaws that bend sharply down towards the gingiva? - ✔✔"A" Clamps After placing a sealant, the patient tells you that they can still feel a high spot. What should you do? A) Remove the sealant and start over B) Have the dentist adjust it C) Use a round bur to adjust the sealant D) Tell the patient that the sealant will eventually wear into place - ✔✔C) Use a round bur to adjust the sealant A properly etched tooth should appear? - ✔✔Chalky, dull, and frosty What type of sealant material doesn't require light curing? A) BIS-GMA B) Photopolymerized C) Autopolymerized D) Filled sealants - ✔✔C) Autopolymerized What is used when determining whether the patient would need double cords for gingival retraction? - ✔✔The size and depth of the sulcus What would you use to place elastomeric separators? - ✔✔Floss or elastic separating pliers What would you use to place elastic ligatures?What would you use to remove? - ✔✔Placing: Locking hemostat Removing: Scaler or explorer
Non-absorbable sutures should be removed when? - ✔✔5 to 7 days after surgery The action used to remove a periodontal dressing is with a _________________ pressure. A) Up and down B) Back and forth C) Lateral D) Hard - ✔✔C) Lateral IRM is used for what kind of restoration? A) Long term restoration B) Permanent restoration C) Temporary restoration - ✔✔C) Temporary restoration What type of fluoride can cause gingival blanching? - ✔✔Stannous Which type of fluoride should you not give to patients with ceramic and composite restorations? - ✔✔1.23 percent acidulated fluoride What type of scissors would you use to trim an aluminum crown? A) Iris B) Dean's surgical scissors C) Crown and Bridge (also known as crown and collar) scissors - ✔✔C) Crown and Bridge (also known as crown and collar) scissors What is used to polish the cervical margins of an aluminum crown? - ✔✔Rubber abrasive wheel There should be no more than ____ mm of space between the crown margin and the finish line of preparation? - ✔✔.5 mm
The tooth that receives the rubber dam clamp is referred to as the - ✔✔Anchor tooth/key tooth The distance from the border for the maxillary arch punching should be? - ✔✔1 inch The distance from the border for the mandibular arch punching should be? - ✔✔2 inches from each side A tooth should be etched for how long? - ✔✔ 15 - 60 seconds How many teeth are in the primary dentition? - ✔✔20 teeth What type of extra oral x ray evaluates the patient's facial profile and soft tissue? A) Bite wing B) Panoramic C) Cephalomeric D) Periapical - ✔✔C) Cephalomeric What type of wax would you use on an impression tray? - ✔✔Utility wax What is the best isolation technique for sealant application? - ✔✔Rubber dam Which of these is an indication for sealant placement? A) Newly erupted tooth B) The adjacent tooth has decay C) Heavy decay on a tooth D) Lack of pit and fissures - ✔✔A) Newly erupted tooth A polishing agent that contains oils/fluoride will - ✔✔Affect the retention of the sealant to a tooth structure
Which of these is considered an endogenous stain? A) Tetracycline B) Tobacco C) Fluorosis D) A & C - ✔✔D) A & C When using two different polishing agents, what should you do? - ✔✔- If they are present, you should polish restorations first
What are paper points made of? - ✔✔Absorbant pieces of paper What is the technique for using paper points? - ✔✔Placing one paper point into the canal to absorb moisture and remove. Continue to do so until a paper point comes out completely dry What substance is contraindicated for a patient with high blood pressure or cardiovascular disease? - ✔✔Epinephrine What does epinephrine do? - ✔✔It is a vasoconstrictor, it narrows the blood vessels and the flow of blood is restricted/decreased What happens if a gingival cord is placed too deep into the sulcus? - ✔✔The sulcus is too narrow at the top by where the tooth is to get a good impression When is fluoride most effective? - ✔✔After brushing and flossing Where do you cut the suture when removing it? - ✔✔Closest to the tissue After removing sutures, you should do what? - ✔✔Count them and compare it to the chart If a sealant is free from moisture contamination, but is uneven and has catches, what should be done? - ✔✔Etch the tooth and add sealant material Excess cement can be removed with which instruments? - ✔✔Explorer, scaler, and/or spoon excavator What should you use to remove sharp edges and angles on a temporary crown to prevent injury to the gingiva? A) Crown and bridge scissors B) Contouring pliers
C) Scaler D) Cotton Pliers E) Ball burnisher - ✔✔B) Contouring pliers What technique is used in cement removal from a temporary crown? A) Placing instrument at the gingival edge B) Placing instrument at occlusal edge C) Slight lateral pressure is applied D) Use a pushing motion - ✔✔A) Placing instrument at the gingival edge Why is an alginate impression removed with a quick snap? - ✔✔To prevent distortion Orthodontic pigtails are tucked where? - ✔✔Towards to gingival surface of the tooth in the interproximal space If you were polishing the maxillary right quadrant, how should the patient's chin and head be positioned? - ✔✔Chin up and looking away from you What bur and handpick would you use to cut through porcelain? - ✔✔High speed hand piece and diamond bur Most sealant failures occur in what time frame - ✔✔ 3 - 6 months Properly placed sealants should last for how long? - ✔✔ 5 - 10 years What would you use to adjust a stainless steel temporary crown? - ✔✔Green stone to smooth the margins A rubber wheel can also be used
A) Headgear B) Herbst Appliance C) Transpalatal bar D) Space maintainers - ✔✔D) Space Maintainers