Slowly remove the needle making sure that any excess anesthetic solution
expressed is removed. Repeat the procedure on the mesiolingual aspect of the
tooth.
CLINICAL TECHNIQUES
STA Intraligamentary
Note: It is important to avoid injection directly into the interdentally papilla. It is
also important to avoid the fast rate of flow. It is recommended to use a
concentration of vasopressor of 1:200,000. Caution should be exercised if using
1:50,000 concentration of vasopressor as excessive ischemia can result in soft
tissue damage.
STA-Intraligamentary Injection Technique
REVIEW STA-INTRALIGAMENTARY TECHNIQUE
1. Activate the STA mode to indicate pressure of the anesthetic as it is being
injected.
2. Place a gauze pad or cotton roll at the site of injection.
3. Prepare the patient for a slow injection.
4. The distolingual and mesiolingual line angles are the primary injection
sites on mandibular teeth (on maxillary teeth use distalbuccal and
mesiobuccal).
5. Caution should be exercised if using this injection for primary teeth or
teeth with active suppuration.
6. Orient a 30 or 27 gauge extra-short needle with the bevel against the
tooth. Approach the tooth at a 45
◦
angle. Slide the needle into the sulcus
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