Patients will be randomly assigned to one of three groups for the purpose of airway management: 1) direct laryngoscopy for nasotracheal intubation without oxygen insufflation (DL group); 2) direct laryngoscopy for nasotracheal intubation with oxygen insufflation (DLO2 Group); and 3) nasotracheal intubation using the Truview PCD video laryngoscope (VL Group). Computer-generated treatment allocations (using the PLAN procedure in SAS statistical software, using random-sized blocks) will be maintained in sequentially numbered sealed envelopes that will be opened after consent is obtained. The laryngoscopy and intubations will be performed by the study investigators who are faculty anesthesiologists or by the mid-level or resident or fellow working with them.