136 Where There Is No Dentist 2012
It is safer to use the metal dental syringe but it depends on the local
anesthetic you can get. Order needles to fit your particular kind of syringe.
1. syringe: aspirating dental cartridge
syringe, 1.8 ml (1ml=1cc)
2. needles: disposable needles for dental
cartridge syringe (27 gauge, long)
one box contains 100 needles, each
one inside a plastic cover.
3. local anesthetic: local anesthetic
cartridges for a dental syringe
one sealed tin contains 50 cartridges
of lidocaine (lignocaine) 2%.
plastic or GLASS SYRINGE
1. syringe: standard syringe that
holds around 3 ml (1ml=1 cc)
2. needles: 24 gauge, long (40 mm
x.56 mm or similar)
3. local anesthetic: 20 ml bottle of
lidocaine (lignocaine) 2%
or, if not available: order
2 ml ampules of procaine
Note: Lidocaine will keep the teeth numb longer if there is epinephrine in it.
But this is more expensive, and you should not use it on persons with heart
problems (see the bottom of the next page).
WHERE TO INJECT
You can deaden a nerve with an
injection of local anesthetic:
1. near the small nerve branch
going inside the root of a tooth.
2. near the main nerve trunk before
it divides into small branches.
Smaller nerves ‘branch’ off from the main nerve—much like branches of a
tree leave its main trunk.
One small nerve then goes to each root of every tooth.
Inject an upper tooth near its roots.
Bone in the upper jaw is soft and spongy.
Local anesthetic placed near the root of
an upper tooth can go inside the bone
and reach its nerve easily.
The same injection also makes the gums
around that side of the tooth numb.