Download Dental Assisting MN Licensure Exam Review: Stains, Polishing, Periodontal Care and more Exams Dentistry in PDF only on Docsity!
Dental Assisting MN Licensure Exam
Review Already Passed
Chlorahexadine Stain ✔✔Found in Chewing Gum and Mouthrinses, Yellowish to green brown in color
Endogenous Stains ✔✔Originate within the tooth through developmental and systemic disturbances and CAN'T be removed
Exogenous Stains ✔✔Those that originate outside the tooth and are caused by environmental agents
Extrinsic Stains ✔✔Are those stains that appear on the exterior of the tooth and CAN be removed
Intrinsic Stains ✔✔Are caused by environmental source but CAN'T be removed because the stain has become incorporated into the tooth structure
Black Stain ✔✔Thin Black line on the teeth near the gingival margin, Frequently found in clean mouths. Extrinsic
Tobacco Stain ✔✔A very tenacious dark brown or black stain - Extrinsic
Brown or yellow stain ✔✔Most commonly found on the buccal surfaces of the maxillary molars and the lingual surfaces of the lower anterior Incisors - Extrinsic
Dental plaque agents ✔✔Reddish brown stain on the interproximal and cervical areas of the teeth. Caused by prescription mouth princes that contain chlorhexidine - Extrinsic
Nasmyths membrane ✔✔Light green or brownish stain caused by food stains in the residue of epithelium, on newly erupted teeth - Extrinsic
Natural rubber polishing cups ✔✔More resilient and do not stain the teeth
Synthetic polishing cups ✔✔should be used for patients with latex allergies
Zirconium Silicate ✔✔Good for Gold, Exposed dentin, tooth colored restorations
How to remove a periodontal dressing? ✔✔Instrument is inserted along the margin of the dressing and a lateral pressure is used to pry dressing away from tissues
How long should topical anesthetics be left on the mucosa? ✔✔1 min - Delmar
15-30 seconds -MDA
Where would you place topical prior to a nasalopalatine nerve block? ✔✔Lingual tissue adjacent to the incisive papilla
Where would you place topical prior to the mental nerve block? ✔✔Anterior to the mental foramen between the apices of the roots of the mandibular premolars
Where would you place topical prior to the mandibular nerve block? ✔✔Posterior to the Retro molar pad below and anterior to the mandibular foramen
Allergic reactions can occur from topical. Some clinical manifestations are... ✔✔Swelling, redness, ulcerations, difficulty swallowing and breathing
Optimal amout of fluoride ✔✔1 ppm
What is systemic fluoride ✔✔Sodium fluoride, water supply, foods, tablets, drops
Types of topical fluoride ✔✔Neutral sodium, stannous, acidulated phosphate
Stannous ✔✔8% Stannous discolors teeth due to tint, disagreeable taste, causes gingival bleeding,
Natural sodium ✔✔2% neutral sodium used in one week intervals for 4 weeks, performed at ages 3, 7, 11, and 13
Acidulated phosphate ✔✔1.23% acidulated phosphate most common done at 6 months or 12- month intervals gel or foam trays
Fluoride rinses ✔✔Swish 1/2 the dose for 1 minute and spit repeat with second portion
Fluoride Varnish ✔✔Usually contains 5% sodium fluoride and can be applied with saliva
Continuous sling suture ✔✔Large flap involving several teeth
Mattress suture ✔✔Used when a flap is to be sutured
Steps in suture removal ✔✔First step in removal of sutures is to gently lift the suture away from the tissues.
Second step is to take the suture scissors and cut the thread below the knot close to the tissue the knot is not pulled through the tissue
Luting ✔✔Bonding or cementing together
Intermediate luting cements ✔✔6 months to 1 year
Liner ✔✔Protects the pulp from bacteria
Zinc phosphate ✔✔Permanent cementation of crowns inlays onlays Bridges and orthodontic bands and brackets period an insulating base
Zinc oxide eugenol ✔✔Temporary cementation of crowns inlays onlays and bridges. A temporary restoration and a low strength base. Also a periodontal dressing after periodontal surgery. Root canal sealer
Reinforced zinc oxide eugenol ✔✔Permanent cementation of crowns Bridges inlays and onlays in insulating base and temporary restoration
Polycarboxylate ✔✔Permanent cementation of crowns Bridges inlays onlays and orthodontic bands and brackets. I high-strength base in a temporary restoration
Glass ionomer ✔✔Permanent cementation of crowns Bridges inlays onlays and orthodontic bands and brackets. I high-strength base and a low strength liner. A permanent bonding liner for composite. Also a root canal sealer, restorative material, and core build up material
Calcium hydroxide ✔✔Low strength liner
Varnish ✔✔Thin layer
The Matrix Band should extend no more than ✔✔1 -1.5mm beyond the gingiva, no more than 2mm above the cusp
What Matrix band is used for class IV restorations? ✔✔Mylar
Whats the most common type of Matrix bands? ✔✔(Amalgam) most common type
Automatrix ✔✔(Amalgam) matrix system to establish a temporary inter proximal wall with no retainer
Plastic strip matrix(Mylar) ✔✔(Composite) For Class III and Class IV
Sectional matrix ✔✔(Composite) (V- ring) for class II
What are the different sizes for Rubber dam? ✔✔5x5 for Pedo and Endo, and 6x6 for Adult procedures
To what tooth should you punch until? ✔✔the Canine of the opposite quadrant
What size hole is the keyhole punch? ✔✔The largest #
What is the septum? ✔✔The amount of dental dam that slides between the teeth.
How mush space should there be in between holes? ✔✔3- 3.5 mm space between the holes
What is inverting & why do we invert? ✔✔Inverting creates a seal to prevent leakage of saliva, we invert to assist in keeping the area dry
When punching holes for the Maxillary arch how far should the holes be punched from the top of the dam? ✔✔Anteriors should be punched 1 inch from the top of the dam
When punching holes for the Mandibular arch how far should the holes be from the bottom of the dam? ✔✔Anteriors should be 2 inches from the bottom of the damn
What is the difference between winged and wingless clamps? ✔✔Extra projections for better retraction and the wings are angled toward the gingiva
What can you add to extend the length of the tray? ✔✔Utility wax
How do you load a mandibular tray? ✔✔From the lingual side, press down on posterior first
How do you load a Maxillary tray? ✔✔From posterior, bulk of material should be towards the anterior to aid in preventing material from going down the throat and eliminating gag reflex
How do you remove the tray? ✔✔Fingers along the lateral borders and push down
How do you store impressions? ✔✔Slightly moist towel in a baggie
Imbibition ✔✔Alginate will absorb additional water
Syneresis ✔✔Moisture will evaporate from material causing shrinkage
Polysulfide ✔✔Base and catalyst
Polyether ✔✔excellent accuracy and demential stability for crowns and bridges (allow 1 min to dry)
Silicone ✔✔base and catalyst (better than Polysulfide) mix for 30 seconds, 3mins to set
Polysiloxane ✔✔(Final impression material) also used for bite registration, 2 mins of setting time
How long can you wait to pour up an alginate impression? ✔✔30 mins - 1hr
What types of materials can be used for bite registration? ✔✔Wax, polysiloxane, Zinc - oxide eugenol
True or false? 2 - 3mm of alginate material must be between the tray and all surfaces ✔✔True
What is the purpose of Gingival retraction? ✔✔Temperaryilly displaces tissues and widens the sulcus so the immpression material can flow around all parts of the preparation. Takes place after the preparation is complete and just before final impression is taken
how long should etchant left on the tooth ✔✔15-30 seconds
If the tooth becomes contaminated after etching and looks shiny and damp what should you do? ✔✔Re - etch
What part of the orthodox band holds the arch wire? ✔✔Buccal tube
Braces are also known as: ✔✔Orthodontic Fixed appliances
Most common type of attachment for fixed appliances: ✔✔Bonded bracket
What holds the arch wire in place? ✔✔Ligature ties and elastomeric ties
What is the purpose of an orthodontic positioner? ✔✔To maintain the ideal position of the teeth apon completion of fixed treatment.
What instrument is used to seat the orthodontic band? ✔✔Bite stick or band seater which is placed on the buccal margin of the band.
What teeth are orthodontic bands placed on? ✔✔First and second molars of the maxillary and mandibular right and left sides.
The occlusal edge of the band is contoured how? ✔✔Slightly rolled
The gingival edge of the band is contoured how? ✔✔Straight and smooth
Where are the orthodontic bands fitted from? ✔✔Patients diagnosed casts
What cement is commonly used to cement orthodontic bands and has fluoride releasing properties. ✔✔Glass ionomer
How are separators placed? ✔✔Using separating priers or floss
How do you remove elastic separators? ✔✔With a scaler or explorer
What is the assistants main role with ortho patients? ✔✔Education
What do you do after all teeth have been ligated? ✔✔Use a ligature cutter to remove excess wire leaving a 3-5 mm pigtail
Where do you tuck the pigtails? ✔✔Under the archwire toward the gingiva in the interproximal with the condenser
What are Kobayashi hooks? ✔✔Ligature ties that have been spot-welded at the tip to form a hook for the attachment of elastics.
What type of bur is used to remove cement after orthodontic brackets are removed? ✔✔Finishing bur
What kind of cements are used to cement orthodontic bands? ✔✔-Zinc Phosphate
-Glass Ionomer
-Polycarboxilate
What are the different arch wire shapes? ✔✔Square, rectangular and round
On average, how long do sealants remain in place? ✔✔5-10 years
When will most sealant failures occur? ✔✔3-6 months
What is the best method of isolating the teeth when doing sealants? ✔✔Rubberdam
How do you evaluate a sealant after it is placed? ✔✔With an explorer
What is a popular sealant material that contains fluoride? ✔✔Glass ionomer (the fluoride is continually released for about 2 years)
What are some indications for sealants? ✔✔-Low/mod caries activity
-Good oral hygiene
-Recently erupted teeth
