Evaluation of the relation between Serum and saliva levels of urea and glucose in healthy referred patients to Tabriz Dentistry Faculty

Abstract

Introduction The occlusal angle of the impacted mandibular tooth is an important criterion to assess the difficulty and time required for surgery and the surgical protocol. The present study aimed at comparing the angle between the longitudinal axis of mandibular second and third molars and maxilla in the CBCT panoramic images and panoramic created by CBCT.

Material and methods In this descriptive-analytical study, 70 images were selected from the archive of panoramic and CBCT images of the patients with upper or lower impacted third molars who referred to the Faculty of Dentistry, Tabriz University of Medical Sciences, in 2018 and 2019. Patients’ age ranged within 20-60 years. The line passing through the floor of the chamber pulp and the root apex in single roots and the line passing through the floor of the chamber pulp and the middle of the interface line between the roots were considered as the longitudinal axis of the tooth. In CBCT imaging, the angle between the second and third molars was examined by corrected Sagittal view developed along the longitudinal axis of the posterior part of the mandible and maxilla. The angle between the longitudinal axis of the second and third molars was measured in panoramic (2D) radiography, CBCT and CBCT panoramic by NNT software. Data were analyzed by SPSS 17 and Kruskal-Wallis test.

Results The angle between the longitudinal axis of the second and third molars was 20.24±08.24 in CBCT images, 50.28± 18.22 in panoramic and 79.28± 95.21 in panoramic produced from CBCT showing no significant difference among three images.

Conclusion The angle between the longitudinal axes of the second and third molars was similar in CBCT imaging, panoramic and panoramic images reconstructed from CBCT.