Dental panoramic radiography with intra-oral X-ray tubes

1986 ◽  
Vol 31 (1) ◽  
pp. 40-43 ◽  
Author(s):  
J. J. Keur ◽  
R. Macdonald
Keyword(s):  
Panoramic Radiography ◽  
X Ray

Radiographic modalities for diagnosis of caries in a historical perspective: from film to machine-intelligence supported systems

2021 ◽  
pp. 20210010
Author(s):  
Ann Wenzel
Keyword(s):  
Panoramic Radiography ◽  
Ex Vivo ◽  
Cone Beam Ct ◽  
Historical Review ◽  
Machine Intelligence ◽  
Cone Beam ◽  
Radiographic Imaging ◽  
X Ray ◽  
Caries Lesions ◽  
Digital Intraoral Radiography

Radiographic imaging for the diagnosis of caries lesions has been a supplement to clinical examination for approximately a century. Various methods, and particularly X-ray receptors, have been developed over the years, and computer systems have focused on aiding the dentist in the detection of lesions and in estimating lesion depth. The present historical review has sampled accuracy ex vivo studies and clinical studies on radiographic caries diagnosis that have compared two or more receptors for capturing the image. The epochs of film radiography, xeroradiography, digital intraoral radiography, panoramic radiography and other extraoral methods, TACT analysis, cone-beam CT and artificial intelligence systems aiding in decision-making are reviewed. The author of this review (43 years in academia) has been involved in caries research and contributed to the literature in all the mentioned epochs.

Preoperative imaging assessment for third molars

2015 ◽  
Vol 61 (1) ◽  
pp. 77-83
Author(s):  
Florian-C. Dogioiu ◽  
◽  
Rodica Luca ◽  
Marinela Tonea ◽  
Consuela E. Ghiuţă ◽  
...  
Keyword(s):  
Postoperative Complications ◽  
Panoramic Radiography ◽  
Third Molar ◽  
Preoperative Imaging ◽  
Third Molars ◽  
X Ray ◽  
Dental Practitioners ◽  
Digital Panoramic Radiography ◽  
Upper Third ◽  
Clinical Cases

Objectives. The comparative evaluation of the role and information contribution brought by panoramic radiography (X-ray) and CT to the preoperative assessment of third molars, found in different stages of eruption. This assessment is useful both for certifying the diagnosis and for establishing the proper surgical strategy adapted to specific clinical cases, in order to avoid undesirable surgical incidents and postoperative complications. Patients and method. This is a retrospective study in which 23 patients were enrolled, on whom 79 third molars were identified. All these molars had, for various (historical and clinical) reasons, removal indications. Sex distribution of the patients was: 6 (26%) men and 17 (74%) women. After a detailed clinical examination, a digital panoramic radiography was performed on all patients, which provided additional useful information. This imaging investigation allowed a sorting out of the cases in which an additional preoperative imaging investigation, such as CT, was required. CT information was compared with that obtained from panoramic radiography (X-ray) and surgery intervention data. Results. In this study imaging investigation was performed on 79 third molars: 41 (51.9%) on upper third molars and 38 (48.1%) on lower molars. As concerning the stage of impaction, 22 (27.84%) were impacted and the same percent was found for those partially impacted. In 22.5 (28.48%) cases root dilacerations were identified. Special attention has been granted to the anatomical relationship of third molar roots with nearby structures: maxillary sinuses and the mandibular canal. So, from the upper third molars, 13 (31.7%) were in the sinus and so were those which were in close relationship with the sinus. Conclusion. Panoramic radiography (X-ray) provides orientative and often insufficient information about root morphology and anatomical relationships of third molars. In the clinical cases which required a comprehensive imaging assessment, CT data were crucial for adapting surgical procedures to specific clinical situations, minimizing surgical incidents and postoperative complications. Discerning recourse to 3D imaging ensures net benefits for patients as well as for dental practitioners.

scholarly journals The relationship between panoramic radiomorphometric indices of the mandible and calcaneus bone mineral density

Medicina ◽  
2010 ◽  
Vol 46 (2) ◽  
pp. 95 ◽  
Author(s):  
Eglė Jagelavičienė ◽  
Ričardas Kubilius ◽  
Aurelija Krasauskienė
Keyword(s):  
Bone Mineral Density ◽  
Postmenopausal Women ◽  
Bone Mineral ◽  
Panoramic Radiography ◽  
World Health ◽  
Mineral Density ◽  
X Ray ◽  
Group 2 ◽  
The Relationship ◽  
Group 1

Objective. The aim of the study was to determine the relationship between bone mineral density in the calcaneus measured using the dual x-ray and laser osteodensitometry technique and bone mineral density in the mandible calculated using the panoramic radiomorphometric indices obtained by applying linear measurements in panoramic radiograms of postmenopausal women. Material and methods. The participants of this study were postmenopausal women (n=129) aged 50 and more. The subjects underwent panoramic radiography of the mandibles, followed by the calculation of the panoramic radiomorphometric indices indicating bone mineral density of the mandible. The dual x-ray and laser osteodensitometer DXL Calscan were used for the measurements of bone mineral density in the calcaneus. Statistical analysis was preformed to find the relationship between bone mineral density measurements in the two anatomically different bones. Results. Following the diagnostic criteria for osteoporosis recommended by the World Health Organization (1994), the subjects were distributed according to the calcaneus bone mineral density T-score into the normal bone mineral density (group 1), osteopenia (group 2), and osteoporosis (group 3) groups. Mean bone mineral density in the calcaneus in the general studied population was 0.38±0.07; the mean value of bone mineral density of the calcaneus in the group 1 (n=34) was 0.47±0.04 (g/cm²), in the group 2 (n=65) was 0.37±0.03 (g/cm²), and in the group 2 (n=30) was 0.29±0.03 (g/cm²). Differences in bone mineral density between the groups were determined using the analysis of variance (ANOVA) F=285.31; df=2; P<0.001 (T1 vs. T2, P<0.001; T1 vs. T3, P<0.001; T2 vs. T3; P<0.001). A statistically significant correlation was found in the general group between the mental index and bone mineral density in the calcaneus (r=0.356, P<0.001), and between the panoramic mandibular index and bone mineral density in the calcaneus (r=0.397, P<0.001). Conclusion. Bone mineral density in the calcaneus and the mandible measured using dual energy x-ray and laser osteodensitometer DXL Calscan and by applying panoramic radiography reflect general changes in the mineralization of these bones, characteristic of the postmenopausal period.

scholarly journals Genotoxic and cytotoxic effects of X-ray on buccal epithelial cells following panoramic radiography: A pediatric study

2015 ◽  
Vol 32 (2) ◽  
pp. 102 ◽  
Author(s):  
DhundanalliPuttalingaiah Vinuth ◽  
ChandrashekarK Thippanna ◽  
Nitesh Naresh ◽  
Ganapathi Moger ◽  
Poonam Agarwal ◽  
...  
Keyword(s):  
Epithelial Cells ◽  
Panoramic Radiography ◽  
Cytotoxic Effects ◽  
X Ray ◽  
Buccal Epithelial Cells ◽  
Pediatric Study

scholarly journals Impact of Different Evaluation Methods for Diagnostic Tasks in Panoramic Radiography

2021 ◽  
pp. 477-486
Author(s):  
Danieli M. Brasil ◽  
Hugo Gaêta-Araujo ◽  
Solange M. Almeida ◽  
João P. B. Angeli ◽  
Gina D. Roque-Torres
Keyword(s):  
Evaluation Method ◽  
Panoramic Radiography ◽  
Visualization Method ◽  
Retention Cyst ◽  
X Ray ◽  
Lower Accuracy ◽  
Diagnostic Values ◽  
Calcification Detection ◽  
Retention Cysts ◽  
Confidence Scale

The aim of this study was to evaluate the observers’ diagnostic performance in panoramic radiography using monitor, tablet, X-ray image view box, and against window daylight as a visualization method in different diagnostic tasks. Thirty panoramic radiography were assessed by three calibrated observers for each visualization method, in standardized light conditions, concerning dental caries, widened periodontal ligament space, and periapical bone defects from the four first molars; mucosal thickening and retention cysts in maxillary sinus; and stylo-hyoid ligament calcification and atheroma. A five-point confidence scale was used. The standard-reference was performed by two experienced observers. Diagnostic values using window light were significantly lower for caries and periapical bone defect and retention cyst, stylo-hyoid ligament calcification detection (p<0.05). For atheroma detection, X-ray image view box, tablet, and widow light had lower accuracy than the evaluation on the monitor (p<0.05). Observer’s diagnostic performances are worsened using window light as an evaluation method for panoramic radiography for dental, sinus, and calcification disorders, while the monitor was the most reliable method.

scholarly journals CBCT's Cone Beam Computed Tomography

2014 ◽  
Vol 1 (1) ◽  
pp. 9
Author(s):  
Sahithya Kailash
Keyword(s):  
Computed Tomography ◽  
Panoramic Radiography ◽  
Cone Beam ◽  
X Rays ◽  
Health Issues ◽  
X Ray ◽  
3 Dimensional ◽  
Area Of Interest ◽  
Multiplanar Imaging ◽  
Dimensional Reconstruction

Dental X- Rays are important for diagnosing and treating patients by helping to detect oral health issues when they can't be detected by visual or physical examination alone. Dental X-Ray take a much closer look and provide valuable information in the area of interest. Though 2 Dimensional X-Ray and Panoramic radiography can predict diagnosis in number of clinical cases, certain situations demand multiplanar imaging, one such technology is CBCT. CBCT is a specialised 3Dimensional Craniofacial imaging in which 3 Dimensional reconstruction is possible. The final reconstructed image produced, reveals multilayer images in 3 orthogonal planes (coronal, sagittal and transverse) This article focuses on CBCT and its applications in various fields of dentistry.

scholarly journals Avaliação do Seio Maxilar: Radiografia Panorâmica Versus Tomografia Computadorizada de Feixe Cônico

2017 ◽  
Vol 19 (3) ◽  
pp. 205
Author(s):  
Murilo Rizental Pacenko ◽  
Ricardo De Lima Navarro ◽  
Thais Maria Freire Fernandes ◽  
Ana Cláudia De Castro Ferreira Conti ◽  
Fábio Domingues ◽  
...  
Keyword(s):  
Maxillary Sinus ◽  
Panoramic Radiography ◽  
Computed Radiography ◽  
Panoramic Radiograph ◽  
Panoramic Radiographs ◽  
X Ray ◽  
Kappa Test ◽  
X Ray Computed ◽  
Mucosal Thickening ◽  
Good Agreement

O objetivo deste estudo retrospectivo implica em comparar a presença de velamento, o espessamento de mucosa e a presença de septo no seio maxilar em radiografias panorâmicas e tomografias computadorizadas de feixe cônico (TCFC). A amostra foi composta por 100 pacientes do arquivo, que apresentavam as radiografias panorâmicas e as TCFC antes do início do tratamento ortodôntico, sendo 57 mulheres e 43 homens, com média de idade de 19,08 anos. Foram incluídas nesta pesquisa apenas os exames que apresentavam boa qualidade e bom posicionamento do paciente. A avaliação do velamento, espessamento de mucosa e presença de septo no seio maxilar foi realizada por um único examinador calibrado, de forma independente, nas radiografias e nas TCFC. A concordância entre os exames foi avaliada por meio do teste Kappa. Os resultados demonstraram boa concordância entre as radiografias panorâmicas e TCFC (Kappa entre 0,62 a 0,72), com -90, -88 e 89% de convergência entre os métodos, para velamento do seio maxilar; espessamento de mucosa e presença de septo no seio maxilar, respectivamente. Pode-se concluir que foi encontrada concordância satisfatória na avaliação do velamento, espessamento de mucosa e presença de septo no seio maxilar entre as radiografias panorâmica e TCFC. Dessa forma, as características do seio maxilar foram identificadas, de maneira semelhante, na radiografia panorâmica e na TCFC.Palavras-chave: Tomografia Computadorizada por Raios X. Radiografia Panorâmica. Diagnóstico.AbstractThe objective of this retrospective study was to compare the presence of filled maxillary sinus, mucosal thickening and the presence of septum in the maxillary sinus on panoramic radiographs and concomitant computed tomography (CBCT) scans. The sample consisted of 100 patients from the archive who presented the panoramic radiographs and the CBCT before the beginning of the orthodontic treatment, being 57 women and 43 men, with a mean age of 19.08 years. Only the exams that presented good quality and good positioning of the patient were included in this study. The evaluation of the presence of filled maxillary sinus, mucosal thickening and the presence of septum in the maxillary sinus was performed by a single examiner, regardless of who was calibrated on panoramic radiograph and CBCT. The agreement among the exams was assessed by means of Kappa test. The results showed good agreement between panoramic radiograph and CBCT (Kappa between 0.62 and 0.72), with -90, -88 and 89% convergence between the methods, for the presence of filled maxillary sinus, mucosal thickening and presence of septum in the maxillary sinus, respectively. It can be concluded that satisfactory agreement was found in the evaluation of the the presence of filled maxillary sinus, mucosal thickening and presence of septum in the maxillary sinus between the panoramic and CBCT radiographs. Thus, the characteristics of the maxillary sinus were similarly identified in panoramic radiography and CBCT.Palavras-chave: Tomography, X-Ray Computed. Radiography, Panoramic. Diagnosis.

Applications of Imaging Technologies in Maxillary Cyst Assessment

2017 ◽  
Vol 68 (5) ◽  
pp. 1130-1136
Author(s):  
Ademir Horia Stana ◽  
Otilia Lavinia Stana (Gag) ◽  
Gheorghe Ciobanu ◽  
Anca Porumb ◽  
Calin Gheorghe Cioban ◽  
...  
Keyword(s):  
Radiation Dose ◽  
Panoramic Radiography ◽  
X Rays ◽  
Radiographic Image ◽  
3D Images ◽  
Maxillary Bone ◽  
X Ray ◽  
Pathologic Lesions ◽  
Maxillary Cyst ◽  
Risk Of Exposure

The use of dental radiographies is nowadays indispensible for the clinician, and the evolution of x-rays provide quality images of the anatomic structures. The indications for a radiographic exam must be based on a clinical examination of the patient. Although the most used radiographies in dentistry are the retroalveolar and the panoramic one, it is considered that the indication for a CBCT scanning should be professional justified and evaluated as a balance between the benefits and the risk of exposure at radiation. The CBCT scans provide good quality images of the anatomic structures, with an accurate delimitation of the pathologic lesions, fact that allows the practitioner to proper evaluate the surrounding structures. CBCT technique uses an x-ray beam shaped like a cone that records 3D images in a single gantry rotation (360 degrees) within 6-20 seconds, with a radiation dose that depends on several factors. The comparison of the radiation dose of the CBCT (11-674 mSv) and the panoramic radiography (2.7�24.3 mSv) demonstrates that the CBCT requires a higher dose of radiation, but the high image quality is competing with the ones obtained with MSCT (280�1,410 mSv). The panoramic radiography uses an x-ray beam that is angled at aproximately 8 degrees, providing the practitioner a 2D radiographic image of the anatomic structures. The disadvantages of the panoramic radiography are the overlapping of the anatomic structures, the distortion and the blurry image. The study is based on the measurements of cystic lesions of the mandibular and maxillary bone that were present on radiographies and CBCT scans of 25 patients. The result of the measurements was that significative differences were found between the panoramic image of the cyst and the reconstructive image that the CBCT.

scholarly journals Estimate of age through the analysis of x-ray of third molar and hand and wrist: case reports

2016 ◽  
Vol 3 (6) ◽  
pp. 837
Author(s):  
Rodolfo José Gomes De Araújo ◽  
Renata De Assis Maia ◽  
Jones Mota Santos ◽  
Carolina Amador da Silva Calandrini ◽  
Roseane Takemura
Keyword(s):  
Panoramic Radiography ◽  
Bone Development ◽  
Case Reports ◽  
Third Molar ◽  
Permanent Teeth ◽  
Third Molars ◽  
X Ray ◽  
The Third ◽  
Tooth Mineralization ◽  
Scientific Expertise

The Forensic Anthropology and Forensic Dentistry, in one of its branches, aim to base skills making possible to estimate the age period for an individual, through factors such as tooth mineralization and bone development. This paper aims to report on two cases from Scientific Expertise Center - Renato Chaves, Belém- PA, where two individuals after committing crime, were referred to under 18s without supporting documents. Through data collected in the archives of the Scientific Expertise Center, an analysis of the mineralization of the teeth were made, highlighting the third molars by panoramic radiography; as well as the study of bone development of the hands and wrists of individuals through radiographs. After, the analysis was compared to surveys conducted by Nicodemos, Moraes and Médici-Filho, befitting the chronology of mineralization of permanent teeth among Brazilian citizens together with the work of Greulich-Pyle, Radiographic correlation concerning the chronology of the development of the hand and wrist. As a result of the analysis, it was obtained, for case 01, an estimated age of 17; and for case 02 the estimated age was between 18-19 years.

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