Objective:

To determine the incidence of complications of the Spix anesthetic technique in the dental procedures of patients attended at the Andrés Bello University dental clinic.

Material and Methods:

37 patients who were cared for by fourth- and fifth-year students from the dental clinic of the Andrés Bello University were analyzed, who underwent the Spix anesthetic technique to perform the dental procedure. The presence of intraoral hematoma formation at the puncture site, needle breakage, number of injected anesthesia tubes, presence of pain upon injection of anesthetic and the presence or not of facial paralysis were recorded. Through data collection and subsequent survey of the participants, the presence of trismus was recorded the day after care.

Results.

Of the 37 cases of patients studied who received the Spix anesthetic technique, 6 had intraoral hematoma (16.2%), no needle break was reported, 1 had facial paralysis (2.7%), 1 had persistent paresthesia at the next day (2.7%), 12 presented trismus after the injection (32.4%), the pain range was between 1 and 4 according to the VAS scale.

Conclusion.

There is a low incidence of complications associated with the Spix anesthetic technique in the Andrés Bello University dental clinic, trismus being the most frequent (32.4%). A larger sample number should be needed to better understand this reality.

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