Accuracy of linear measurement in the Galileos cone beam computed tomography under simulated clinical conditions

Abstract

Objectives: The aim of this study was to determine the geometric accuracy of cone beam CT (CBCT)-based linear measurements of bone height obtained with the Galileos CBCT (Sirona Dental Systems Inc., Bensheim, Hessen, Germany) in the presence of soft tissues. Methods: Six embalmed cadaver heads were imaged with the Galileos CBCT unit subsequent to placement of radiopaque fiduciary markers over the buccal and lingual cortical plates. Electronic linear measurements of bone height were obtained using the Sirona software. Physical measurements were obtained with digital calipers at the same location. This distance was compared on all six specimens bilaterally to determine accuracy of the image measurements. Results: The findings showed no statistically significant difference between the imaging and physical measurements (P . 0.05) as determined by a paired sample t-test. The intraclass correlation was used to measure the intrarater reliability of repeated measures and there was no statistically significant difference between measurements performed at the same location (P . 0.05). Conclusions: The Galileos CBCT image-based linear measurement between anatomical structures within the mandible in the presence of soft tissues is sufficiently accurate for clinical use.

Effective dose assessment in the maxillofacial region using thermoluminescent (TLD) and metal oxide semiconductor field-effect transistor (MOSFET) dosemeters: a comparative study

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Quantification of circumferential bone level and extraction socket dimensions using different imaging and estimation methods: a comparative study

“…Therefore, the absence of soft tissue or a soft tissue equivalent in the present study may be considered a limitation. Recent findings, however, have shown that the measurement accuracy in the presence of soft tissue was comparable to that for data previously obtained from a situation in which there was no soft tissue [26]. Chen et al [27] reported that the buccolingual alveolar crest width was overestimated using CBCT images.…”

Intraobserver and interobserver reproducibility in linear measurements on axial images obtained by cone-beam computed tomography

“…Measurements for preoperative implant site assessment taken from CBCT images should be considered accurate when the error was less than 1 mm 415. Owing to the mechanical construction of CBCT machines, which require a relatively slow trajectory of the source image detector unit around the patient's head, even slight patient movement seems almost inevitable.…”

“…The accuracy and reliability of linear measurements in cone-beam computed tomography (CBCT) images has been established in several published scientific studies,1234567891011 including studies where they have been obtained from CBCT-derived models 212…”