The effect of oral respiration on the dental occlusion in patients with respiratory tract allergies

الملخص EN

Background : malocclusion is one of the main problems concerning the oral cavity.

This study examined the possible effect of mouth breathing habits in patients with respiratory tract allergies on the dental occlusion.

Materials and methods : the study was conducted on 150 patients having allergic rhinitis, asthma or both ranging in age from 5-19 years.

A group of 150 healthy individuals matched with gender and age to the study group was used as a control group.

The total sample was questioned about their mode of breathing then their occlusion was examined clinically.

Results : significantly higher percentages of mouth breathers were found among the study group (P < 0.05).

Similarly CLII and CLIII dental occlusion, displaced teeth as well as crowding affected significantly greater percentages of allergic patients in comparison to the control group.

Conclusion : mouth breathing habits in patients with respiratory tract allergies may have an additive role in the development of some undesirable malocclusions.