module 3 Flashcards
(21 cards)
What is the positive aspiration rate for the inferior alveolar (IA) block?
10–15%
What does it mean if no bone is contacted during an IA block?
The needle is too posterior; move the syringe barrel more anterior.
What does it mean if bone is contacted too soon during an IA block?
The needle is too anterior; reposition the syringe barrel toward the molars.
What causes facial paralysis during an IA block?
Injection into the parotid gland due to deep needle placement without bone contact.
What should you consider if anesthesia fails due to accessory innervation?
Infiltrate the specific tooth or consider a Gow-Gates injection.
What is the correct protocol to avoid subperiosteal injection during an IA block?
Withdraw the needle 1 mm before injecting.
How much anesthetic should be deposited during an IA block and over what time?
1.5 ml deposited slowly over 60 seconds.
How long should you wait to reassess anesthesia after an IA block?
3–5 minutes.
What is the positive aspiration rate for the long buccal block?
0.7%
What is the positive aspiration rate for the mental/incisive injection?
5.7%
Which mandibular injection is most similar to the Middle Superior Alveolar (MSA) block?
The Mental/Incisive Block.
What injections are needed for scaling and root planing (SRP) of an entire mandibular quadrant?
Inferior Alveolar (IA) Block for teeth and lingual tissues
Long Buccal Block for buccal soft tissue near molars
What injections are recommended for SRP of mandibular premolars and anteriors only?
Mental/Incisive Block for pulp and buccal soft tissue
Lingual infiltration for lingual tissue anesthesia
How long should topical anesthetic be applied before infiltration?
At least 1 minute.
Where is the needle inserted for infiltration of an anterior or premolar tooth?
At the mucobuccal fold, approximately 5 mm below the apex.
What gauge and length of needle is used for anterior/premolar infiltration?
A 27-gauge short needle.
How much anesthetic is injected for anterior/premolar infiltration?
One-third of a cartridge.
What anesthetic is typically used for molar infiltration?
Septocaine (articaine).
Where is the needle inserted for molar infiltration?
Between the roots or in the papilla, approximately 5 mm deep.
How much anesthetic is injected for molar infiltration?
One-third of a cartridge, or one-eighth if injecting into the papilla.
How many aspirations should be performed before injection?
Aspirate twice.
