completely within the tissue. The needle movements are extremely slow and
gentle during penetration while the slow flow rate is maintained. The needle is
reoriented to a 45º angle as it is advanced until it contacts the bone.
Perform aspiration. Maintain contact on bone and deliver the required dosage of
3/4 to 1 cartridge. Significant blanching of the palate will be observed (with
anesthetics containing vasopressor) and care should be taken upon needle
removal to reduce anesthetic solution from dripping down the posterior palate.
Note: It is critical that only the slow rate be used for this injection. Using
the fast rate of flow may cause excessive ischemia and tissue damage. It is
recommended that anesthetic containing vasopressor concentration of 1:100,000
or 1:200,000 be used. Caution should be exercised with 1:50,000 concentration
of vasopressor. Excessive ischemia can result in soft tissue damage.
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