Effect of warming anesthetic solutions in injection pain during dental anesthesia. A Randomized clinical trial.

  • Pedro Christian Aravena Universidad Austral de Chile.
  • Camila Barrientos Universidad Austral de Chile.
  • Catalina Troncoso Universidad Austral de Chile.


Aim: To determine the effectiveness of anesthesia warming control pain feeling during the administration of anesthesia in maxillary infiltration technique nerve block. Methods: A double-blind clinical trial study was designed. Fifty-six volunteers students (mean age 23.1±2.71 years) of Universidad Austral de Chile Dental School (Valdivia, Chile) were participated. They were given 0.9 ml of 2% lidocaine with 1: 100,000 epinephrine (Alphacaine®; Nova DFL - Brazil) by two punctions at buccal vestibule of lateral incisor. In a hemi-arch a warm anesthesia of 42ºC (107.6°F) was administered; and after one week in to contralateral side a room temperature (21ºC; 69.8°F) was administered. In both times with a standard speed. The level of intensity pain perceived during injection was registered and compared by visual analog scale (VAS) of 100mm (Wilcoxon test p <0.05). Results: With room temperature anesthesia a pain VAS average 34.2 ± 16.6 mm and anesthesia with 42°C a VAS average 15.7 ± 17.4mm was perceived (p <0.0001). Conclusion: The use of anesthesia at 42°C had significantly less pain perception compared to use with room temperature anesthesia during the maxillary infiltration technique.


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How to Cite
ARAVENA, Pedro Christian; BARRIENTOS, Camila; TRONCOSO, Catalina. Effect of warming anesthetic solutions in injection pain during dental anesthesia. A Randomized clinical trial.. Journal of Oral Research, [S.l.], v. 4, n. 5, p. 306-312, oct. 2015. ISSN 0719-2479. Available at: <http://www.joralres.com/index.php/JOR/article/view/joralres.2015.060>. Date accessed: 20 aug. 2019. doi: https://doi.org/10.17126/joralres.2015.060.


Local anesthetics; pain; injection: warming; temperature.