The purpose of this study is to determine whether the forearm-supported head extension decreases dental contact between laryngoscope blade and maxillary incisors during direct laryngoscopy

Inclusion Criteria:

• Patients undergoing surgery that require endotracheal intubation for general anesthesia

Exclusion Criteria:

• Trauma or disease or cervical spine
• Toothless patient
• Dentoalveolar injury
• Anatomical anomaly of face or airway
• History of difficult intubation
• Patient refusal