The Relation Between the Distance of Hard Palate and Tongue with Nasal Septal Deviation

Background: this study aimed to determine the distance between the hard palate and the tongue and its relationship with nasal septal deviation (nsd). methods: this descriptive-analytical study was conducted on patients aged 18 to 60 years referred to the ent clinic of milad and masih daneshvari hospitals. patients were also divided into two groups (patients with and without nsd). coronal ct scan was taken in all patients in the same position. in this regard, these pictures were taken vertically from the highest point of the hard palate to the tongue, the transverse distance between the two upper third molars of the upper jaw, and the ratio of these two distances. results: the mean age of patients with and without nsd was 35.8212.49±, and 33.9912.78± years old (p=0.66). the distance of hard palate to tongue in patients with and without nsd was 13.05±4.52, and 12.26±4.68 mm, respectively (p=0.32). the intermolar distance in these patients was 34.2±3.50, and 34.40±3.31 mm (p=0.78), respectively. this ratio in the two groups was 0.380.13±, and 0.340.11±, respectively (p=0.16). conclusion: according to these findings, no significant difference was observed between the patients with and without nsd regarding the distance between the hard palate and tongue, intermolar distance, and its ratio, but the distance of hard palate to tongue, and the ratio in the patients with nsd was slightly higher than patients without nsd. further studies using coronal ct scan in larger samples are needed to clarify the role of the distance of hard palate and the tongue in nsd.