Download ORTHODONTIC ASSISTANT FINAL EXAM ACTUAL EXAM QUESTIONS AND CORRECT DETAILED ANSWERS and more Exams Nursing in PDF only on Docsity!
ORTHODONTIC ASSISTANT FINAL EXAM ACTUAL EXAM
QUESTIONS AND CORRECT DETAILED ANSWERS
Orthodontics is the dental specialty that deals with - (answers)the growth and development of the jaws and face The condition in which the mandible is located ahead of the maxilla is called - (answers)prognathism The best way to motivate adolescents toward good oral hygiene habits is by - (answers)relating to social acceptance and appearance Removal of bands may be accomplished with - (answers)anterior band slitting pliers A headgear appliance is worn - (answers)as the orthodontist prescribes A positioner is worn - (answers)after the removal of fixed appliances In placing TP springs, an important consideration is - (answers)to place them from the lingual surface The instrument of choice in ligating an archwire is a - (answers)ligature-tying pliers
Direct bracket bonding is advantage because the procedure - (answers)allows the dentist less clinical chair time The attachment either welded or soldered to the bands that secure the archwire is the - (answers)bracket Brass separators are removed by - (answers)cutting opposite the pigtail with ligature cutters What instrument is used to place elastic separators? - (answers)Elastic separating pliers The patient should be instructed to clean his or her retainer - (answers)after each meal Cephalometry is - (answers)taking measurements of the skull Cephalometric tracings are made over - (answers)extraoral radiographs The cephalometric headplate taken most often is the - (answers)lateral skull headplate
During cementation of bands, the cement is placed - (answers)on all surfaces within the band The attachment of anterior plastic brackets directly to teeth can be accomplished by - (answers)acid etch bonding Cervical anchorage (headgear) is an - (answers)appliance that exerts distal forces on maxillary teeth After active orthodontic treatment is finished , what appliance is used to stabilize the teeth? - (answers)A retainer When determining the length of a preformed archwire, you measure the distance from - (answers)first molar to first molar In the removal of an archwire - (answers)ligature ties, then the archwire, are removed one side at a time from the buccal tube The most common type of removable retainer is a - (answers)Hawley retainer What is used to tie the archwire onto orthodontic brackets? - (answers)Ligature wire
When removing separators, care must be taken to - (answers)avoid injuring the interdental papillae A useful instrument for removing elastic separators is - (answers)a sickle scaler A TP spring is a type of - (answers)Separator An elastic separator is placed by - (answers)stretching and pushing through the contacts When placing an archwire, one should - (answers)insert the wire into one side of the buccal tubes, then guide it into the brackets The importance of the ligature wire is that it - (answers)holds the archwire in place When ligating with a tie wire, the tie wire should be - (answers)bent at a 45- degree angle Select the instrument used to check for loose bands - (answers)Howe pliers After cutting brass wire separators, the pigtails are cut to - (answers)2-3 mm
Which of the following is (are) the correct procedure(s) for mixing zinc phosphate cement for band seating? - (answers)Spatulate over a large area of slab and use a cool slab The information needed for the diagnosis and treatment planning of an orthodontic case includes - (answers)complete medical history, radiographs and tracings, study models, photographs An important function of the dental assistant in an orthodontic practice is to - (answers)motivate and reinforce oral hygiene home care A finished Hawley retainer may have - (answers)an acrylic palate, a labial wire, arrow clasps Before cementation - (answers)brackets are waxed, bands are arranged in cementation order, teeth are isolated and dried, teeth are coronal polished
Orthodontic bands with metallic bracket attachements are designed to be - (answers)cemented on teeth as a means of anchoring archwires In reference to an orthodontic study cast model - (answers)trimmed models must be polished and labeled, a model trimmer is used to establish right angles, white orthodontic plaster is used, wax bite is used to occlude models while trimming the heel. If an archwire does not go in - (answers)check for a crushed bracket, the molar band tube is blocked, check width and diameter of archwire In the placement and removal of elastic ligatures, which of the following instruments may be used? - (answers)locking hemostat, and scaler After removal of the orthodontics bands, all excess cement should be removed because - (answers)gingival irritation may occur, teeth will not occlude properly, teeth may appear discolored, cement is irritating to the interproximal surfaces of teeth On which surface(s) is the archwire located? - (answers)Labial or lingual surface
Extrude Rotate - (answers)extrude If there is a very narrow maxilla, what kind of malocclusion will develop? - (answers)Malocclusion II What kind of attachment is placed when sheath is added to the band? - (answers)Lingual arch When a headgear is placed on the cervical or pull up areas what kind of malocclusion is it correcting? - (answers)Malocclusion II What is the benefit of the etch-primer used on the enamel? - (answers)Strongest bond An OA assistant is placing brackets noticed one of them slides off the position, what should they do? - (answers)Ask the orthodontist to reposition it What kind of wire is stiff enough to re-rotate an anterior tooth? - (answers)Braided What is the most common wire to control torque? - (answers)
What is a bracket made of? - (answers)Stainless Steel What is the prescription value and differences of the 1st and 2nd bicuspid brackets in the lower portion of the mouth? - (answers)The buccal portion of the tooth is different What is the quality value of a braided wire, and what is the difference to a stainless steel wire? - (answers)Stiffer What is a malocclusion II division I? - (answers)When the anterior teeth are protruded When you place a band on a molar more mesially than distally, how will this molar rotate? - (answers)distally Where do you place a band? - (answers)below the height of contour When you place a bracket on a lateral anterior tooth too mesially, how will this tooth rotate? - (answers)ligual? What kind of tie do you use for elastic when moving teeth intermaxillary? - (answers)Kobiachi
What is the most common bracket slot size? - (answers)18 x 22 What kind of pliers do you use to tie a wire tie? - (answers)Matheau Which archwire is wider? - (answers)maxillary What direction do you point the scaler tip when removing cement? - (answers)occlusal When you sit a band and put pressure, which part are you careful with when placing the metal part of the bite stick? - (answers)the occlusal enamel of the tooth What sets the curing process in a normal environment? - (answers)Normal and ultraviolet light
