Anesthesia Armamentarium Flashcards
what is the local anesthetic armamentarium?
syringe
needle
cartridge (aka carpule)
what criteria does the ADA require for syringes?
- durable and withstand multiple sterilizations
- accept wide variety of cartridges and needles
- inexpensive, simple to use with one hand
- effective aspiration, blood easily seen in cartridge
what are the types of nondisposable syringes?
breech-loading metallic, aspirating
breech-loading metallic self-aspirating
breech-loading plastic, aspirating
pressure syringe for PDL injection
jet injector (needleless)
what is the most commonly used syringe in dentistry?
breech-loading, metallic, cartridge, aspirating
what are the advantages of the PDL syringe?
mechanical advantage - easier to administer
trigger permits measured dose
cartridge protected (cartridge break/shatter)
where is the needle weakest?
at the hub
as the gauge ________ the needle lumen diameter _________
decreases, increases
OR
increases, decreases
what’s the main advantage of a smaller gauge needle?
less deflection (greater accuracy)
what did the unpublished study by Monheim show regarding the gauge of needle with positive aspirations
25 - 100% positive aspirations achieved (preferred in high risk aspiration area)
27 - 85% positive aspirations
30 - 2% positive aspirations
what length is the long needle?
32mm
what length is the short needle?
20mm
what length is the ultra-short needle?
10mm
what are the two recapping options?
scoop technique
needle holder
T/F you shouldn’t bend needles
True
upon insertion the needle will dull after __________ penetrations
3-4
how does the needle length affect deflection?
longer needle = higher deflection
how does the angel of the bevel affect deflection?
greater angle = greater defelection
what is the capacity for a cartridge or carpule?
1.8 (usual) or
1.7 (actually 1.76 mL)
what does the aluminum cap of the carpule do?
hold diaphragm in place
why should you not use carpule warmers?
breaks down epinephrine and it doesn’t work as well
what should you do if the plunger is even or beyond the rim of the carpule?
discard it!
a pt present to your office with a latex allergy and wants to make sure there isn’t any latex used for the dental procedure. you know that there is latex present on the anesthetic carpule so you __________
administer the anesthetic as usual. there are no reported/documented allergic reaction in studies or articles
what are the contents of the cartridge?
local anesthetic drug
sodium chloride
sterile water
vasopressor (except in carbocaine)
sodium bisulfite
methylparaben (no longer, people had allergic reactions)
