LIA Flashcards
what are the contents of a cartridge of LA?
La agent vasoconstrictor reducing agent preservative fungicide carrier solution
what are the different types of LA agents?
xylocaine
citanest- prilocaine
articaine
what are two vasoconstrictors?
adrenaline
felypresin
what does the vasoconstrictor do?
prolongs anaesthetic time
what does the reducing agent do?
prevents oxidation of vaocostrictor
competes with adrenaline for o2
why is preservative rarely used?
can provoke allergic reaction
name a fungicide
thymol
what are the legal requirements for a therapist giving LA?
must be registered
must have written, signed and dated tx plan from dentist
medical Hx must be updated
dentist must be on premises when ID block delivered
what position should patient be for administration of LA?
semi recubant- reduces risk of faint
for how long should topical be applied?
2 minutes
what nerve supplies upper incisors and canines?
anterior superior alveolar nerve- teeth and buccal ginigva
nasopalatine nerve- palatal gingiva
what are the upper pre molars supplied by?
mid superior alveolar nerve
palatally- nasopalatine
some nasopalatine
what nerve innervates the upper molar region?
posterior superior alveolar nerve
what difficulties may arise re. maxillary molars?
zygomatic arch my be obstructive round 1st molar.
m and d LIA may be necessary
where should palatal LIA be given?
between median raphe and gingival margin
