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Local anesthesia in the mandible
Terms in this set (20)
Which nerves are anesthetized in a mandibular block?
Inferior alveolar nerve
What are the types of mandibular blocks?
What are the target zones for the conventional block?
Posterior zone: IAN and LN
Anterior zone: LBN (separate injection)
What are the limits of the posterior zone of a CNB?
retromolar triangle. the dimple or depression found roughly in the center of the triangle
6-10mm above occlusal plane
What is the depth of penetration for posterior CNB?
until bone is contacted. 20-25 mm in depth or 2/3 of needle
What needle and how much anesthetic is used in a posterior CNB?
3/4 needle with bone contact
whole carpule except for .2 cc
What are the limits of the anterior zone of a CNB or LBN? and where is penetration made?
Anterior border of the ramus. penetration is made distal and buccal to the most distal molar in arch.
parallel to occlusal plane but buccal to teeth.
What needle is used for a LBN block? and how much anesthetic is deposited?
1-4 mm until bone is contacted
.2 cc deposited
What is the difference b/w the gow gates block and CMN block?
the target zone is 2 cm superior
very high success rate 95%
longer onset (5-10 min vs 3-5 min)
low aspiration rate 2%
successful with bifid IAN/ mand canals
What is the target area of the GGM block? and where do you penetrate the mucosa?
anteromedial side of condylar neck.
place needle just distal to max 2nd molar at the height of the ML cusp of the 3rd molar
What needle is used in GGM block?
25 long. insert until bone is contacted or 3/4 needle length. make sure bone is contacted. you contact the condylar neck.
Whats the difference b/w the uni-linear block and the CM block?
the ULM block is 1 cm superior to CM block. its an area where IAN, LN and LBN are closet
What is the target area of ULM block? and where do you penetrate the mucosa? how much anesthetic is deposited?
1 cm superior to CM. penetrate at 5 mm above dimple of posterior triangle. 1/2-1/3 needle length. swing barrel until bone is contacted then withdraw 2mm and deposit 3/4 carp. slowly withdraw while depositing
Where is the target area for a Vazirani-akinosi block? and where is the mucosa penetrated?
medial border of the ramus same height of uni lateral. avoid lateral flare of ramus.
mouth is closed with light occlusion. parallel needle to max occ plane, needle is inserted at mucogingival junction of 2nd max molar and advanced laterally.
no bone contact
what needle is used in a VA block? and how much anesthetic is deposited?
25 long. insertion is made 3/4 needle length from tuberosity. bevel away from ramus. used full 1.8 cc
What is the target area of a mental nerve block? and where is penetration made?
mental foramen b/w apices of 1st and 2nd premolars.
penetrate in depth of vestibule just anterior or posterior to neurovascular bundle
What needle is used for MN block and how much anesthetic is deposited?
25 long or 27 short. insert deep enough to bury the bevel 3-5 mm
bevel toward bone
use 1/2 carpule or 1 cc
apply pressure on ballooned area
What is a mylohyoid nerve block use for? What is the indication?
can provide innervation to mandibular molars. indication is when a successful MandB has been given but pt still has sensation in molars
What is the target area for a myl N block? and where do you penetrate the mucosa?
lingual approach just medial to mand 2nd molar
penetrate in depth of lingual vestibule at 45 degrees
what needle is used in mylo N block? and how much anesthetic is used?
25 long or 27 short
insert to 1/3 of needle length - 3-5mm until lingual border of mandible is contacted
bevel toward bone.
use 1/2 carp or 1 cc
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