Resumo

RIBEIRO, Artur de Oliveira; SILVEIRA, Carlos Emanoel Silva da  e  SOUZA, Liane Maciel de Almeida. RGO, Rev. gaúch. odontol. (Online) [online]. 2011, vol.59, n.3, pp. 373-378. ISSN 1981-8637.

Objective The purpose of this study was to assess if 4% articaine with 1:100,000 epinephrine (DFL®, Rio de Janeiro, Brazil) provides the necessary diffusion to anesthetize dental pulps innervated by the anterior and medium branches of the superior alveolar nerve as well as the nasopalatine region after posterior superior alveolar nerve block. Methods In this descriptive and quantitative study, selected total of 30 patients was selected, with healthy superior-lateral incisors and first premolars, who were submitted to cold testing of the pulp, puncture of the nasopalatine region and identification of the stimuli on the visual analogue Faces Pain Scale. This procedure was repeated in two stages, four minutes and eight minutes after the posterior superior alveolar nerve block with articaine. Results Eight minutes after the injection, 50% of patients reported complete absence of pain (score zero) in the lateral incisor tested, 80% in the premolar and 36.67% in the nasopalatine region. No statistically significant diffusion was recorded in either gender (p = 0.26) or between different age groups (p=0.29). Conclusion Diffusion did not occur with the expected intensity in all patients, which does not exclude the use of anesthetic block on these nerves when an intervention is needed in the region.

Palavras-chave : Carticaine.; Diffusion.; Maxillary nerve..