ARMAMENTARIUM Flashcards
deliver the content at the anesthetic cartridge through the needle to the patient
syringe
what are the characteristics of acceptable syringe
durable and able to withstand repeated sterilization without damage
capable of accepting a wide variety of needles and cartridge
inexpensive, self contained, light weight and simple to use
harpoon is sharp
provide for effective aspiration
steps in proper injection
insert needle in the correct depth
aspirate
deposit/inject
blood is present
positive aspiration
fluid or bubble but no blood
negative aspiration
what are the types of syringe available in dentistry
breech loading metallic cartridge type aspirating
breech loading plastic cartridge type aspirating
breech loading metallic cartridge type self aspirating
pressure syringe
jet injector
computer controlled LA delivery system
most common in dentistry
breech loading metallic cartridge type aspirating
it is attached to the barrel of the syringe at the needle of adaptor
needle
a sharp tip attached to the piston
harpoon
what is the harpoon shape
spear and screw
allow to push and pull the piston
thumb ring
a plastic, reusable,dental aspirating and both autoclavable and chemically sterilize
breech loading plastic cartridge type aspirating
advantages of breech loading plastic cartridge apsirating syringe
eliminates metallc, clinical look
light weight
cartridge is visible
to increase the ease of aspiration and uses the elasticity of the rubber diaphragm in the anesthetic cartridge
breech loading metallic catridge type self aspirating
for intraligamentary injection or periodontal ligament injection that injected in the PDL space through the gingival sulcus
pressure syringe
two types of pressure syringe
pistol grip and pen grip device
advantage of pressure syringe
permits measured dose
enables a relatively weak administrator to overcome the significant tissue resistance
complete encases the cartridge
disadvantage of pressure syringe
easy to inject rapidly
cost
needle less injection at the very high pressure can penetrate intact or mucous membrane
jet injector
liquids forced through very small openings called?
jets
how many solution calibrated in 2000 PSI
0.05-0.2ml
uses of jet injector
obtain topical anesthesia before needle insertion
obtain mucosal anestehsia of the palate
used for intramuscular,intravascular or intraoral injections
disposable syringes
advantages of disposable syringe
single use
sterile until opened
lighweight
disadvantages of disposal syringe
does not accept prefilled dental catridge
aspiration is difficult
what LA known for having antihistamine
diphenhydramine
minimizes the risk of accidental needle stick injury
safety syringes
improves on the ergonomics and precision of the dental syringe, foot pedal controlled and available flow rates of the LA is consistent from injection to the next
computer controlled local anesthetic delivery system
care and handling of syringe
wash and rinse the syringe as to be free of any LA solution, saliva or others
syringe should be dismantled and all threaded joints should be lubricated
harpoon should be clean with a brush
replace pistons and harpoon in case harpoon loose its sharpness
4 problems of syringe
leakage during injection
broken cartridge
disengagement of harpoon from plunger during aspiration
surface deposit
permit the LA solution to travel from dental cartridge into the tissue
needle
sensitive and where the needle fracture
hub
types of bevel
monobevel and bi bevel
what are the 2 factors in the selection of needle
gauge and length
what gauge has less pain, not accurate, high deflection of needle and easy to break
30
what gauge has equal pain, accurate in aspiration, possible for deflection and possible for needle breakage
25 and 27
what is the based on choosing the needle
viscosity of the blood
how to measure the needle
from the hub to the needle tip
20 mm
short needle
30-32
long needle
10 mm
ultra short needle
penetration of significant thickness of soft tissue
long needle
penetration of significant depths of soft tissue beyond 20 mm
short needle
care and handling of needle
must never be used more than one patient
changes after severaltissue penetration in same patient
covered with protective sheath
attention should always be paid to the position of the uncovered needle tip
must be properly disposed after used
problem in needle
pain on insertion
breakage
pain on the widthrawal
injury to the patient on administration
how to prevent breakage
do not bend the needle
do not change direction of the needle when embedded to the tissue
a glass cylinder containing LA drug among the other ingredients
cartridge
cartridge content
LA drug
vasopressor/ epinephrine
antioxidant/ sodium bisulfite
sodium chloride
distilled water
methylparaben
makes the solution isotonic with the tissue of the body
sodium chloride
8 problems in cartridge
bubbles
extruded stopper
burning on injection
sticky stopper
eroded cap
rust on the cap
leakage during injection
broken cartilages
being trapped in the cartridge and potentially destroyed the vasopressor
small bubbles
result of freezing the anesthetic solution
large bubbles
what gas used to prevent the oxygen trapped in cartridge
nitrogen gas
what antispetic is not used on patient that has hyperthyroidism and prescribed after oral surgery
povidone iodine
contents of povidone iodine
1% mouth rinse
7.5% soap
10% betadine
prescribed after perio treatments and can cause tooth discoloration
chlorhexidine
contents of chlorhexidine
0.12% or 0.2% concentration
2% rct procedures
usually prescribed in medical field
hexetidine
solution of hexitidine
5%
place directly at the site of penetration approx for 1 min
topical anesthesia
an ester anesthesia only available as topical
benzocaine 20%
an amide available as topical and injection
lidocaine
how many percent solution is lidocaine as topical
5%,10% and 15%
