|
INJECTION |
PENETRATION
SITE |
SYRINGE ORIENTATION |
DEPOSITION SITE |
DEPTH OF PENETRATION |
AMOUNT
DEPOSITED |
AREA ANESTHETIZED
P= pulp of |
INFILTRATION
|
HT of vestibule ~
middle of tooth |
Parallel to long axis of tooth |
Apex of tooth |
6 mm or ¼ needle length
(short) |
1/3 of cartridge |
¬
tooth
¬
bucc gingiva
|
|
ASA |
Ht of Vestibule
Mes canine eminence
|
parallel to long axis of tooth
|
Apex of canine |
6 mm or
½ needle
length (short)
|
1/3 to ½
cartridge |
¬
P central incisors / bone of
¬
80% pt: pre /same teeth
¬
facial soft tissue
|
|
MSA |
Ht of Vestibule
max 2nd premolar
|
parallel to long axis of 2nd premolar |
3-5 mm
apical region of 2nd premolar
|
6 mm or ¼ needle length |
½ to
�
cartridge
|
¬
P
premolars &
MB rt of 1st molar
¬
F soft tiss over teeth
¬
bone over same teeth |
|
PSA |
Ht of vestibule
Dis max 2nd molar
|
45°
¯
max occ
plane
45°
away mid sag plane
|
Post/Sup to max at the PSA nerve foramen
|
short needle: ¾
length
small pt:
½
to
�
length
lg. pt:
½ long needle
|
½ to total cartridge |
¬
P
2st & 3rd molars
¬
60% MB root of 1st molar
¬
Facial soft tiss over teeth
¬
bone over same teeth |
|
GP |
Ant/GP foramen
Dis
to
2nd molar
|
opposite side being injected needle at rt angle to penetrate site
|
ant to greater palatine foramen |
no more than 10 mm
(usually 3- 6mm)
|
several drops to ¼ cartridge |
¬
post of hard palate
¬
med / midline |
|
NP |
Palatal Mucosa
Lat /incisive papilla
|
Canine/premolr w 45°
angle to the incisive papilla |
Incisive foramen beneath the incisive papilla
|
no more than 4-6
mm
or until bone is contacted
|
several drops to ¼ cartridge |
¬
hard palate & soft tiss of the Max Ant teeth Bilaterally |
|
IA &
LINGUAL |
Med border of ramus b/t hgt coronoid notch / intersects
pterygo- mand raphe 6-10
mm
above Occ
plane
|
Over opposite premolars parallel to the mand occ plane |
¬IA
nerve~
sup to mand foramen at inf alveolar nerve b4 it enters foramen
¬ling nerve~
after depositing solution for IA withdraw needle until ½
its length remains in tissue
|
\
�
to
¾
of needle
length
until bone is lightly contacted approx
(withdraw 1mm)
\
withdraw needle ½
length approx 16mm
|
IA
~ ½
to
total cartridge
Ling~
¼
of cartridge
|
¬
IA~ mand teeth to midline
body of mand, inf pt ramus F tiss 2nd pre to mid
&
¯
Lip on inject side
¬
Ling~ All L ging tiss to
midline, ant of tongue &
floor of mouth |
|
BUCCAL |
vestibule D & B /most D molar in quadrant |
Parallel to mand occ plane on the buc side of teeth
|
buccal nerve as it passes over ant
border of ramus
|
1-4
mm (usually 1-2 mm)
or until bone is gently contacted
|
1/8 to
¼
of cartridge
|
¬
soft tiss buc to mand molars on injected side |
|
MENTAL/
INCISIVE |
MB fold directly
over or ant mental foramen
|
Directed toward mental foramen |
over mental foramen (usually b/t apices of 1st & 2nd
premolars
|
¼ of needle length Do not enter mental foramen
|
1/3 to ½
cartridge
|
¬
F soft tiss from mental foramen ant to midline,
¯
lip & skin of chin
¬
Incisive ~ pre, cusp & inc on same injected side +
F soft tissues |
