between the tooth and the bone in the periodontal ligament space.
Maintain slight pressure.
7. Initiate the ControlFlo™ rate at the moment of penetration and maintain
the slow rate continuously.
8. Advance the needle in the periodontal ligament space until it will advance
no further. If no resistance is encountered, re-position the needle to
ensure it is within the PDL space.
9. Activate the cruise control if desired.
10. Observe the pressure gauge and listen for the ascending audio tones,
indicating pressure is building. Continue building pressure until the
pressure indicator is in the GREEN zone and/or the audio tones are
ascending and the STA says “PDL”.
CLINICAL TECHNIQUES
STA Intraligamentary
11. Continue the slow flow rate until approx. 0.9 ml is deposited (per site) for
a molar tooth. Less anesthetic is required for premolars and
anterior teeth.
12. Reposition the needle if pressure begins to drop as indicated by the
pressure indicator or by descending tones.
13. Repeat on the mesiolingual line angle.
Important note: On all PDL injections there is residual fluid pressure even when
the foot control is released. Wait 5 - 7 seconds before removing the needle from
the injection site to allow pressure to dissipate or remove during the aspiration
cycle. This reduces unwanted flow of anesthetic solution into the oral cavity.
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