Avaliação da eficácia anestésica de articaína quanto à necessidade de injeção palatina após infiltração vestibular supraperiosteal

Abstract

The choice of a less traumatic anesthetic strategy for the procedure, which provides patients with a more comfortable treatment and experience, should be investigated. This work was developed with the objective of evaluating the effectiveness of articaine in the anesthesia of palatal soft tissues during the extraction of posterior maxillary teeth by only buccal supraperiosteal injection. The study included 50 patients in need of extraction of 1 posterior maxillary tooth. After a 5-minute period of application of 1 tube of 4% articaine with 1:100,000 supraperiosteal epinephrine, the level of pain in the palatal region was assessed with a periodontal probe using the visual analogue scale. In cases of failure, 0.9 ml (½ tube) was injected and after another 5 minutes a new evaluation was carried out. If the pain persisted, palatal anesthesia was performed. The success rate was 44%. Furthermore, statistically significant reductions were observed over time in palatal and buccal probing scores. This study demonstrated that it was possible to obtain palatal anesthesia with only vestibular infiltration in some cases. However, even in cases requiring palatal infiltration, a reduction in discomfort during injection was observed.