Evalua&on of Tongue Volume and Airway Volume in Skeletal Class I and Class II Pa&ents using Cone Beam Tomography- A Cross Sec&onal Study Vol 11 No 1 (2023) DOI 10.5195/d3000.2023.245 h#p://den*stry3000.pi#.edu Evaluation of Tongue Volume and Airway Volume in Skeletal Class I and Class II Patients using Cone Beam Computed Tomography- A Cross Sectional Study Jim Thomas Abraham 1 , Roshan M Sagarkar 2 , Sharanya Sabrish 2 , Prashantha Govinakovi Shivamurthy 3 , Silju Ma<hew 2 , Nagaraju Rakesh 4 1 Faculty of Dental Sciences, M S Ramaiah University of Applied Sciences, MSRIT Post, M S R Nagar, Bengaluru, Karnataka, India. Pin 560054 2 Department of Orthodontics, Faculty of Dental Sciences, M S Ramaiah University of Applied Sciences, MSRIT Post, M S R Nagar, Bengaluru, Karnataka, India. Pin 560054 3 Head of Department of Orthodontics, Faculty of Dental Sciences, M S Ramaiah University of Applied Sciences, MSRIT Post, M S R Nagar, Bengaluru, Karnataka, India. Pin 560054 4 Department of Oral Medicine and Radiology, Faculty of Dental Sciences, M S Ramaiah University of Applied Sciences, MSRIT Post, M S R Nagar, Bengaluru, Karnataka, India. Pin 560054 Abstract BACKGROUND: The volumetric rela&onship between the tongue and the oral cavity is an important factor in tooth alignment and occlusion. The aim of this study was to evaluate the difference in tongue and airway volume in skeletal Class I and Class II malocclusion. MATERIALS AND METHODS: The CBCT data which comprised of 30 skeletal Class I and 30 skeletal Class II was stored in DICOM format. Tongue volume and airway volume was analyzed with the help of 3D dolphin soKware. Values obtained were subjected to sta&s&cal analysis with help of SPSS. RESULTS: Skeletal Class I paMern had more tongue volume with a mean of 45.32 mm 3 than skeletal Class II paMern with mean value of 40.27 mm 3 with P value of <0.001. Skeletal Class I paMern has more airway volume with a mean of 15058.6 mm 3 than pa&ents with skeletal Class II paMern with mean value of 12458.8 mm 3 with a P value of 0.003. A P value of 0.001 indicated that there is a strong correla&on between the tongue volume and airway volume in both skeletal Class I and skeletal Class II subjects. CONCLUSION: The volume of tongue and airway was greater in skeletal Class I malocclusion compared to skeletal Class II malocclusion. There exists a posi&ve correla&on between the tongue volume and airway volume in both the skeletal paMerns. KEYWORDS: airway volume; Class I skeletal malocclusion; Class II skeletal malocclusion; Dolphin soKware; tongue volume Cita9on: Thomas Abraham, J et al. (2023) Evalua9on of Tongue Volume and Airway Volume in Skeletal Class I and Class II Pa9ents using Cone Beam Computed Tomography- A Cross Sec9onal Study Den9stry 3000. 1:a001 doi:10.5195/d3000.2023.245 Received: October 5, 2021 Accepted: April 4, 2023 Published: October 13, 2023 Copyright: ©2023 Thomas Abraham, J et al. This is an open access ar9cle licensed under a Crea9ve Commons AVribu9on Work 4.0 United States License. Email: drsharanyaortho@gmail.com Introduction According to the equilibrium theory, teeth alignment is influenced by the tongue and the lip [1]. The tongue is a powerful muscular organ which is centrally located within the oral cavity and has the ability to affect the position of the teeth and the surrounding structures [2]. Abnormality of either function or position of tongue can lead to change in the surrounding dentoalveolar