scholarly journals Evaluation of soft tissues simulant materials in cone beam computed tomography

2019 ◽  
Vol 48 (1) ◽  
pp. 20180072 ◽  
Author(s):  
Priscila A Lopes ◽  
Gustavo M Santaella ◽  
Carlos Augusto S Lima ◽  
Karla de Faria Vasconcelos ◽  
Francisco C Groppo
Keyword(s):  
Computed Tomography ◽  
Cone Beam Computed Tomography ◽  
Soft Tissues ◽  
Cone Beam

scholarly journals Soft tissue changes after anterior maxillary osteotomy by using 3D CBCT scanning.

2018 ◽  
Vol 4 (4) ◽  
pp. 1245-1250 ◽  
Author(s):  
Ahmed AL-Omar ◽  
Usama AL-Dakroroy
Keyword(s):  
Computed Tomography ◽  
Soft Tissue ◽  
Cone Beam Computed Tomography ◽  
Soft Tissues ◽  
Mean Value ◽  
Cone Beam ◽  
Maxillary Osteotomy ◽  
Tissue Changes ◽  
The Mean ◽  
Soft Tissue Changes

The objective of this study was to evaluate the soft tissue changes after anterior maxillary osteotomy using cone beam computed tomography. The study included twelve patients diagnosed as suffering from an excess of the anterior part of maxilla and required surgical correction by anterior maxillary osteotomy. Assessment of Cone beam computed tomography in evaluation the soft tissue changes. All cases subjected to anterior maxillary osteotomy using modified Cuper technique. Follow up of cases was does clinically and radio- graphically by cone beam computed tomography. The results of the study proved that the statistically significant increase in mean Nasolabial angle after 6 months was 5.2 degrees, the mean value of nasal width after 6 months was 0,9mm. The mean value of Philtrum length was 3.3mm. In conclusion, Cone Beam Computed Tomography can be used to obtain dimensionally accurate linear and angular measurement from bony maxillofacial structure and landmarks and allows accurate, three-dimensional imaging of hard and soft tissues.

scholarly journals Integration of Digital Dental Casts in Cone-Beam Computed Tomography Scans

2012 ◽  
Vol 2012 ◽  
pp. 1-6 ◽  
Author(s):  
Frits A. Rangel ◽  
Thomas J. J. Maal ◽  
Stefaan J. Bergé ◽  
Anne Marie Kuijpers-Jagtman
Keyword(s):  
Computed Tomography ◽  
Cone Beam Computed Tomography ◽  
Orthognathic Surgery ◽  
Soft Tissues ◽  
Average Distance ◽  
Maxillofacial Surgery ◽  
Digital Data ◽  
Cone Beam ◽  
Novel Method ◽  
Dental Casts

Cone-beam computed tomography (CBCT) is widely used in maxillofacial surgery. The CBCT image of the dental arches, however, is of insufficient quality to use in digital planning of orthognathic surgery. Several authors have described methods to integrate digital dental casts into CBCT scans, but all reported methods have drawbacks. The aim of this feasibility study is to present a new simplified method to integrate digital dental casts into CBCT scans. In a patient scheduled for orthognathic surgery, titanium markers were glued to the gingiva. Next, a CBCT scan and dental impressions were made. During the impression-taking procedure, the titanium markers were transferred to the impression. The impressions were scanned, and all CBCT datasets were exported in DICOM format. The two datasets were matched, and the dentition derived from the scanned impressions was transferred to the CBCT of the patient. After matching the two datasets, the average distance between the corresponding markers was 0.1 mm. This novel method allows for the integration of digital dental casts into CBCT scans, overcoming problems such as unwanted extra radiation exposure, distortion of soft tissues due to the use of bite jigs, and time-consuming digital data handling.

scholarly journals Prevalence of soft tissue calcifications in CBCT images from the Oral and Maxillofacial Radiology Service at UNAB, Viña del Mar, Chile.

2020 ◽  
Vol 9 (6) ◽  
pp. 457-465
Author(s):  
Patricio Meléndez-Rojas ◽  
◽  
Leniz Arancibia-Mesas ◽  
Carolina Poblete-Carrasco ◽  
◽  
...  
Keyword(s):  
Computed Tomography ◽  
Soft Tissue ◽  
Cone Beam Computed Tomography ◽  
Soft Tissues ◽  
Cone Beam ◽  
Maxillofacial Radiology ◽  
Cross Sectional ◽  
Radiology Service ◽  
Computed Tomography Images ◽  
Oral And Maxillofacial Radiology

Soft tissue calcifications can indicate the presence of more serious, potentially life-threatening pathologies. Therefore, their study can lead to an early diagnosis of those conditions that have not yet become clinically apparent. Main objective: To determine the prevalence of calcifications in soft tissues of the head and neck in cone beam computed tomography images obtained from the Oral and Maxillofacial Radiology Service at Universidad Andrés Bello (UNAB), Viña del Mar, Chile. Material and Methods: Retrospective, cross-sectional, quantitative study. A total of 288 images of cone beam computed tomography (CBCT) were used. Images were obtained at random from the database of the Oral and Maxillofacial Radiology Service at UNAB, Viña Del Mar, between 2014 and 2019. Results: A prevalence of 59.72% of soft tissue calcifications was obtained. The most prevalent were: tonsilloliths and calcified stylohyoid ligament, accounting for 30.65% and 45.56%, respectively. Conclusion: A high prevalence of soft tissue calcifications was found in a population that has not been studied previously; therefore, it is important that the dentist perform a detailed analysis of the cone beam computed tomography.

scholarly journals Intrapetrous Anastomosis between the Internal Jugular Vein and the Superior Petrosal Sinus: Cone Beam Computed Tomography Incidental Finding

2015 ◽  
Vol 5 ◽  
pp. 46
Author(s):  
Ilson Sepúlveda ◽  
Thomas Schmidt ◽  
Enrique Platín
Keyword(s):  
Computed Tomography ◽  
Internal Jugular Vein ◽  
Cone Beam Computed Tomography ◽  
Soft Tissues ◽  
Jugular Vein ◽  
Incidental Finding ◽  
Three Dimensional ◽  
Cone Beam ◽  
Anatomical Variant ◽  
Superior Petrosal Sinus

This is a case report of a 62-year-old male who presented to the Ear, Nose, and Throat clinic for a follow-up exam for hearing loss stemming from a fall from a horse in his infancy. A Cone Beam Computed Tomography (CBCT) examination revealed an intrapetrous communication between the internal jugular vein bulb and the superior petrosal sinus. Three-dimensional bone and soft tissues volume renderings were generated to demonstrate this incidental anatomical variant.

Modern approaches to the elimination of artifacts of cone-beam computed tomography of the maxillofacial region

2021 ◽  
Vol 1 (38) ◽  
pp. 14-20
Author(s):  
A. A. Dolgalev ◽  
A. B. Danaev ◽  
S.J. Hossain ◽  
A. A. Kulikova ◽  
N. F. Yamurkova ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Cone Beam Computed Tomography ◽  
Soft Tissues ◽  
Maxillofacial Surgery ◽  
Three Dimensional ◽  
Qualitative Assessment ◽  
Cone Beam ◽  
Area Of Interest ◽  
The Right

The use of X-ray radiation is the main additional method for complete visualization of hard and soft tissues in dentistry and maxillofacial surgery. Cone-beam computed tomography (CBCT) is of leading importance among other methods. Three-dimensional reformation of CBCT data into a multiplanar or three-dimensional image of anatomical structures allows for a qualitative assessment of the area of interest and to choose the right treatment tactics if necessary. Nevertheless, there are a number of factors or artifacts that lead to distortion, disrupt the image or lead to loss of information during CBCT, in addition, the formation of overdiagnosis is not excluded. Currently, an active search is underway for ways to improve the quality of CBCT images and eliminate artifacts to improve the quality of diagnostics. This review is devoted to the description of the main causes of artifacts and modern methods of their elimination.

scholarly journals Assessment of available sites for palatal orthodontic mini-implants through cone-beam computed tomography

2020 ◽  
Vol 90 (4) ◽  
pp. 516-523
Author(s):  
Xinwei Lyu ◽  
Jiusi Guo ◽  
Liangrui Chen ◽  
Yi Gao ◽  
Lu Liu ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Soft Tissue ◽  
Cone Beam Computed Tomography ◽  
Soft Tissues ◽  
Age Factors ◽  
Cone Beam ◽  
Hard Tissue ◽  
Mini Implants ◽  
Computed Tomography Images

ABSTRACT Objective To measure the palatal thickness of both hard and soft tissues and to determine safe regions for the placement of mini-implants. The influences of sex and age on palatal thickness were also examined. Materials and Methods Cone-beam computed tomography images of 30 patients (12 males, 18 females), including 15 adults and 15 adolescents, were used in this study. The thicknesses of palatal hard tissue, soft tissue, and hard+soft tissues were measured at the coronal planes of first premolars, second premolars, first molars, and second molars (P1, P2, M1, and M2 planes, respectively). Results The hard tissue was thickest at the P1 plane, followed by at the P2, M1, and M2 planes, while the thickness of soft tissue was similar among the four planes. The trends in the changes of palatal thickness from midline to the lateral sides (V-pattern) were similar for the four planes. Palatal thickness was influenced by sex, age, and their interaction. Mapping of recommended and optimal sites for palatal mini-implants was accomplished. Conclusions Sex and age factors could influence palatal thickness. Therefore, the findings might be helpful for clinicians in guiding them to choose the optimal sites for palatal mini-implants.

scholarly journals Prevalence of soft tissue calcifications in cone beam computed tomography images in the region of head and neck

2020 ◽  
Vol 23 (2) ◽  
Author(s):  
Vandeberg Diniz ◽  
Elaine Cristina De Carvalho Beda Correa de Araújo ◽  
Bianca Costa Gonçalves ◽  
Karolina Aparecida Castilho Fardim ◽  
Luiz Roberto C Manhães Junior ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Soft Tissue ◽  
Lymph Nodes ◽  
Cone Beam Computed Tomography ◽  
Soft Tissues ◽  
Cone Beam ◽  
Radiographic Findings ◽  
Facial Region ◽  
Computed Tomography Images ◽  
Imaging Science

Objective: to evaluate the prevalence of calcifications in the soft tissues of the cervical-facial region using cone beam computed tomography (CBCT) images. Material and Methods: two hundred and ten CBCT exames was analyzed by 01 examiner previously trained, with fild of view (FOV) of 16 x 13 cm and voxel of 0.25 mm, in ICAT Vision software (Imaging Science International, Hatfield, PA, USA) in coronal, axial and sagittal sections. The following calcifications were evaluated: tonsiloliths, sialolites, calcification of the styloid complex, calcified carotid atheromas, calcifications in laryngeal cartilages, calcified lymph nodes and osteoma cutis. The findings were tabulated according to the total of the sample, related to the gender, age group of the individuals. Results: Calcification of the styloid complex was the most frequent in the sample studied in both genres (39.04%), followed by the presence of tonsiloliths (19.52%), and calcified lymph nodes (6,67%). Conclusion: calcifications are frequent radiographic findings in CBCT and important for the diagnosis of some possible pathologies that do not present clinical symptoms.KEYWORDSCone-beam computed tomography; Prevalence; Soft tissue calcification.

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