COA Orthodontic Materials & Equipment Flashcards
6 cards from real COA practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 COA Orthodontic Materials & Equipment flashcards as text
What type of material is most commonly used to bond orthodontic brackets to teeth?
Answer: Composite resin
Composite resin is the most widely used bonding material for orthodontic brackets due to its strong adhesion and good aesthetics.
Which instrument is used to remove excess bonding material from around newly placed brackets?
Answer: Scaler
A scaler is used to scrape away excess composite resin from around the bracket base before curing.
What is the primary purpose of orthodontic separators (spacers)?
Answer: To create space between teeth before band placement
Orthodontic separators are placed between contact points to create space for fitting orthodontic bands around molar teeth.
Which archwire material has the highest elastic memory and is most commonly used during initial alignment?
Answer: Nickel-titanium (NiTi)
Nickel-titanium wire has superior elastic memory and delivers light, continuous forces ideal for the initial alignment phase of treatment.
What gauge ligature wire is most commonly used in orthodontics to tie archwires to brackets?
Answer: 0.009 inch
0.009-inch stainless steel ligature wire is the standard gauge used to cinch archwires into bracket slots.
What is the function of an open coil spring placed on an archwire?
Answer: To open (create) space between teeth
An open coil spring pushes adjacent teeth apart, creating space for tooth movement or implant placement.