Majid Vatankhah - Assistant Professor of Anesthesiology, Anesthesiology & Critical Care and Pain Management Research Center, Hormozgan University of Medical Sciences, Bandar Abbas, Iran.
Hashem Jarineshin - Associated Professor of Anesthesiology, Cardiothoracic anesthesia fellowship, Anesthesiology & Critical Care and Pain Management Research Center, Hormozgan University of Medical Sciences, Bandar Abbas, Iran
Mehrdad Melekshoar - Assistant Professor of Anesthesiology, Intensive Care fellowship, Anesthesiology & Critical Care and Pain, Management Research Center, Hormozgan University of Medical Sciences, Bandar Abbas, Iran.
Farzaneh Barkhordari Aahmadi - Mother and Child Welfare Research Center, Hormozgan University of Medical Sciences, Iran

Background: Airway management is one of the most important responsibilities of anesthesiologists, predict difficult tracheal intubation can reduce the possible complications of intubation. The aim of this study was to investigate the malocclusion classification and degree of laryngoscopy to predict the difficult intubation. Methods: A retrospective observational study was performed in Shahid Mohammadi and Shariati hospitals affiliated to Bandarabbas University of medical sciences in Iran. Over a ۴-yr period from ۲۰۱۴ to ۲۰۱۸, ۱۰۸۰ attempts at for treatment of malocclusion were recorded. Results: According to the findings of this study, the highest percentage ۴۹.۳% (۵۷۲ n), were malocclusion Class ۱, and ۴۲.۱%( ۴۸۸n) were malocclusion Class ۲  and ۱.۷% (۲۰ n) were malocclusion Class ۳. Findings showed that the relationship between the two variables of malocclusion and the degree of laryngoscopy in terms of age, sex, thyromental distance, malamapathy and BMI showed that between the two variables of malocclusion and the degree of laryngoscopy in ages less than ۱۰ years, there is a significant relationship and inverse correlation(r= -۰.۵۹۴). Conclusion: The results of this study showed that is no significant relationship between dental malocclusion and degree of laryngoscopy, malamapathy, gender and BMI. Malocclusion only at less than ۱۰ years of age is effective to predict difficult laryngoscopy.

Airway, Difficult Intubation, Malocclusion, Laryngoscopic Grade