Basic Technique Flashcards
(23 cards)
How should a practitioner be positioned when giving an injection?
Tripod stance - most stable
Before giving an injection what steps should occur?
Dry the area before application of topical
Place topical anesthetic with pressure
Why do we dry the area before applying topical?
Won’t dilute the topical anesthetic
Why do we place pressure on the topical anesthetic?
Concentration gradient - pressure pushes the anesthetic deeper into the tissues.
What are the Maxillary injections?
ASA, MSA, PSA (superior alvelolar nerver V2)
Greater Palatine
Lesser Palatine
What are the Mandibular injections?
Inferior Alveolar Nerve * Mandibular * Lingual Long Buccal Mental
What is the difference between the mental nerve and long buccal nerve?
Long buccal –> mucosa of posterior region
Mental –> mucosa of anterior region
What is an infiltration?
injecting anesthetic to a portion of the nerve. Does not numb the entire nerve (PSA, ASA, MSA)
What is a nerve block?
injecting anesthetic to the root of the nerve - numbing the entire nerve and it’s corresponding innervations.
Mandibular inferior alveolar nerve
How do you get a true PSA?
Placing the needle behind the maxilla where the nerve enters the bone.
When injecting how far in should the needle be? (ASA, MSA, PSA)
tip of the needle should be at the apex of the root
What way should the bevel be facing?
facing the bone
Anatomically where should the needle be injected for an ASA or MSA?
Near the mucogingival line plus a little. Want to be able to follow the curve of the maxilla and not run into bone during injection
What is the coverage of a properly performed ASA?
Central Incisors –> Mesial Buccal Root of the first molar
- incisors
- canine
- Premolars
- mesial buccal root of first molar
If putting a rubber dam ring on the medial buccal of 1st molar what injections must be performed?
ASA or MSA
What is the coverage of a properly performed MSA?
Premolars
Mesial Buccal root of the first molar
When performing work on the first molar what injections must be done?
MSA and PSA
- MSA –> mesial buccal root
- PSA –> rest of the first molar
When performing a PSA what technique is used?
45 degree - behind maxillary tuberosity
* Insert needle at a 45 degree angle to occlusal plane
* Move needle lateral 45 degree from midline plane
Want to be posterior and superior to maxillary tuberosity
What is the coverage of a properly performed PSA?
All the molars excluding - mesial buccal root of the first molar
What is “numbed” in a tooth?
the pulp
When doing an ASA what other nerve can be affected?
Infraorbital nerve - exiting the infraorbital foramen
What is numbed outside of the mouth during an ASA
Lower eye
Side of nose
Upper lip
Where should the injection of an ASA occur?
Mucobuccal fold
Over first premolar
Contact osseous
