LA - Dental LA Infiltration Flashcards
where will LA infiltration work?
on thin porous bone
where will it be difficult for LA infiltration to work?
thicker bone, divergent roots
where will LA infiltration fail to work?
where there is very dense outer cortical bone
3 areas where infiltration anaesthesia is useful?
upper teeth
lower incisors
occasionally lower canines
one area where infiltration anaesthesia is difficult?
upper 1st molars
on which teeth do infiltration anaesthesia normally not work on?
how can you overcome this?
- lower molars and premolars
- use articaine (increased evidence that it works on lower posteriors)
3 things required for infiltration anaesthesia?
- medical history
- equipment: short needle, appropriate anaesthetic
- patient position: supine or upright
procedure before infiltration injection?
air dry mucosa apply topical anaesthetic via cotton wool wait (5-20mins?) remove cotton wool deliver injection
while delivering injection….
things to keep in mind? x7
use mirror hold tissues taut syringe 45deg to bone bevel of needle facing bone insert needle until bone is contacted withdraw needle 1mm - aspirate inject LA - 1min for 1ml
buccal/labial infiltrations: used for?
simple restorations
palatal/lingual infiltration: used for?
tooth extraction
if there is failure of buccal/labial anaesthesia
