Deformación de la aguja anestésica utilizada en procedimientos odontológicos al contactar con hueso en una técnica troncular simulada: Estudio ex-vivo.

Abstract

Introduction: Anesthetic needles are essential in clinical practice because they allow for better access to different anatomical structures of the oral cavity, in order to block nerve conduction, avoiding pain to the patient. However, few studies have shown complications that have not been taken much into account when performing a blockage, such as the deformation of the needle when contacting the bone. Objective: To determine the deformation that occurs in the anesthetic needle when contacting bone in a trunking technique used in dental procedures. Method: An experimental study was carried out ex-vivo, with a total sample of 24 brand anesthetic needles which included: Misawa Dental Needle, Medicdental, Denject, and C-K Ject. The size and caliber (27G of 30 mm and 30G of 21mm), which were subjected through a calibrated texturometer with results in newton to three insertions in bone tissue - muscular pig with a truncated technique and viewing the deformation of the needles through a stereomicroscope. Results: 83.33% of the anesthetic needles were deformed. The anesthetic needles of the Misawa brand were the ones that presented the greatest number of needles with deformation and according to the calibers, the same proportion of deformation was observed in both short and long needles. In addition, as far as efforts are concerned, it is evident that effort one and two demonstrated a deformation equal to 75%, and the third effort a deformation of 100%. Conclusions: The majority of the needles in this study revealed deformation, which was more loose in some trademarks than in others. Without meaningful results according to both the caliber-size and the efforts when observed in the third insertion, the needles already present a total deformation, which highlights the importance of the study to help avoid complications both in the procedures and in the health of the patient.