Question

21 a study was conducted by nubesh s. Khan et al, in which assessment of the red blood cell parameters for signs of anemia in patients with mild, moderate, and severe chronic periodontitis was estimated

Answer 1

In general: Nasal breathing is healthierthan mouth breathing for several reasons. ... Exhaling through the nose, which is smaller than the mouth, creates greater air pressure andtherefore a slower exhalation. This gives the lungs extra time to extract agreater amount of oxygen
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