esophageal intubation

What Is The Difference Between Orotracheal Intubation And Endotracheal Intubation? The most widely used route is orotracheal, in which an endotracheal tube is passed through the mouth and vocal apparatus into the trachea. In a nasotracheal procedure, an endotracheal tube is passed through the nose and vocal apparatus into the trachea. Are there different levels