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ESS score, VAS score, soft palate angle, MP\u2010H distance, S\u2010H distance, <jats:styled-content style=\"fixed-case\"><jats:sub>a<\/jats:sub>C<\/jats:styled-content><jats:sub>4<\/jats:sub>\u2010H distance, <jats:styled-content style=\"fixed-case\"><jats:sub>a<\/jats:sub>P<\/jats:styled-content><jats:sub>u<\/jats:sub>\u2010<jats:styled-content style=\"fixed-case\"><jats:sub>p<\/jats:sub>P<\/jats:styled-content><jats:sub>u<\/jats:sub> distance and total pharyngeal area were calculated at P1, P2 and P3 positions with the help of an adjustable MAD. The results were statistically analysed.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p><jats:styled-content style=\"fixed-case\">ESS<\/jats:styled-content> score, <jats:styled-content style=\"fixed-case\">VAS<\/jats:styled-content> score, soft palate angle, <jats:styled-content style=\"fixed-case\">MP<\/jats:styled-content>\u2010H distance, S\u2010H distance and radius of curvature of airway at P2 and P3 were significantly lower compared to P1, but there was no significant difference between P2 and P3.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>The <jats:styled-content style=\"fixed-case\">MAD<\/jats:styled-content> produced significant improvement in objective signs and subjective symptoms at both 50% and 75% of the maximum mandibular protrusion positions at comparable comfort levels. 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