Since CBCT machines are not equipped with cephalostat, the skull might be in eccentric position during scanning procedure. Unfortunately, unwanted measurement errors may lead to catastrophic consequences like treatment failure. As different treatment approaches highly depend on the exact estimation of distance between anatomical landmarks and bone thickness, many clinicians tend to use the linear measurement capability of CBCT. Consequently, the use of this technique dramatically increased in implant dentistry, maxillofacial surgery, orthodontics, endodontics, and so forth. Thus CBCT was introduced to promise low-radiation doses together with adequate image quality, as well as fast image processing and lower costs. The case against these two systems was that they exposed patients to high-radiation doses. Single-slice CT and Multislice CT techniques were first introduced in this regard. Nowadays, the use of three-dimensional radiographies is increasing for diagnosis and treatment in dentistry. IntroductionД¬one Beam Computed Tomography (CBCT) has found its niche in different fields of dental practice during recent years.

The accuracy of measurements in GALILEOUS CBCT machine varies when the position of the skull deviates from ideal however, the differences are not clinically significant. There was a significant difference between physical measurements and radiographic measurements in ideal, rotation, tilt, and extension positions ( ). The mean difference between physical measurements and radiographic measurements was. The physical and radiographic measurements were compared to estimate linear measurement accuracy. Radiographic distances were measured in ideal, rotation, tilt, flexion, and extension positions of the skulls. Buccolingual and mesiodistal distances and heights were measured in 5 different regions of either jaws using a digital caliper. Opaque markers were attached to alveolar bone. 6 dry human skulls were included in the study. The aim of this study was to determine the accuracy of linear measurements in dry human skulls in ideal position and different deviated positions of the skull.

Galaxis galileos viewer