Possibilities and limits of imaging endodontic structures with CBCT.

Possibilities and limits of imaging endodontic structures with CBCT. Swiss Dent J. 2015;125(3):293-311 Authors: Weber MT, Stratz N, Fleiner J, Schulze D, Hannig C Abstract An adequate portrayal of the root canal anatomy by diagnostic imaging is a prerequisite for a successful diagnosis and therapy in endodontics. The introduction of dental cone beam computed tomography (CBCT) has considerably expanded the scope of imaging diagnostics. The aim of the following study was to evaluate the imaging of endodontic structures with CBCT. One hundred and twenty teeth were examined with a CBCT device (ProMax 3D). Subsequently, the findings of the three-dimensional images were evaluated and compared to those of dental radiographs and tangential section preparations of the examined teeth. Results with high prevalence, such as existing roots and root canals, as well as results with low prevalence, e.g., extremely fine anatomical structures of the endodontic tissue, could be visualized precisely by dental CBCT; side canals, ramifications, communications, pulp stones, and obliterations could also be detected. Additionally, the length of curved root canals could be determined accurately. Likewise, root fractures were visualized reliably with CBCT. However, carious lesions could not be diagnosed adequately, and the evaluation of fillings and prosthetic restorations was complicated due to scattered X-ray artifacts. CBCT datasets qualify to visualize and diagnose small anatom...
Source: Schweizer Monatsschrift fur Zahnmedizin - Category: Dentistry Tags: Swiss Dent J Source Type: research

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ConclusionsC-shaped root canals were more prevalent in mandibular second molars and in females. Additionally, clinicians should bear in mind the greater possibility of C-shaped configuration in mandibular molars with fused roots.Clinical relevanceMandibular molars with C-shaped canals present a clinical challenge. A higher C-shaped proportion was noted in radiographic fused root types, which had 17.2 higher odds of presenting such anatomy when compared to radiographic non-fused roots. Root radiographic features may help in diagnosis of complex C-shaped morphologies.
Source: Clinical Oral Investigations - Category: Dentistry Source Type: research
AbstractDistal humeral fractures represent approximately 2% of fractures in adults and are often treated operatively to restore stable humeral columns and allow early elbow motion. Diagnosis is made with orthogonal radiographs. The traction view radiograph and computed tomography with three-dimensional reconstruction can be helpful in preoperative planning. Treatment options include: (1) nonoperative management, which is reserved for lower-demand, medically unwell, elderly patients, (2) surgical osteosynthesis, which remains the treatment of choice for most fractures, and (3) prosthetic replacement with either hemiarthropl...
Source: European Journal of Orthopaedic Surgery and Traumatology - Category: Orthopaedics Source Type: research
AbstractPurposeTo evaluate and characterize anterior chest wall (ACW) joint ’s enthesopathy on CT scans in patients with DISH compared with age- and gender-matched control group.Material and methodsRetrospective evaluation for enthesopathy features of ACW joints —sterno-clavicular (SCJ), manubrio-sternal (MSJ), costo-sternal 1–7 (CSJ)—on chest CT scans of subjects with DISH (Resnick criteria) and of age- and gender-matched control subjects was performed. 183 subjects (DISH: 92, control: 91); male:female: 126:57, average age: 71.7 years (range 50–94 ) were evaluated. Total enthesopathy sco...
Source: Skeletal Radiology - Category: Radiology Source Type: research
We present a series of five cases of talus partitus identified on MRI and examine pitfalls in diagnosis, differential considerations, pathophysiology, and treatment opti ons.
Source: Skeletal Radiology - Category: Radiology Source Type: research
ConclusionSternal wire complications secondary to migration beyond the sternum are rare but potentially fatal. Precise wire location and risk assessment with CT are more appropriate when wire location cannot be clearly delineated by plain film radiography.
Source: Journal of Cardiac Surgery - Category: Cardiovascular & Thoracic Surgery Authors: Tags: CASE REPORT Source Type: research
n E Abstract The role of the patella is paramount in the transmission of the quadriceps muscle forces, the increase of the lever arm, the distribution of the forces on the trochlea and the centring of the extensor apparatus. Despite the low incidence of patellar factures in comparison with other lower limb fractures, the painful and functional complications, such as knee stiffness, loss of extension and patellofemoral osteoarthritis, can be very disabling and will often compromise the return to a professional or recreational activity and induce falls in the elderly population. Treatment can be conservative or surg...
Source: Swiss Medical Weekly - Category: General Medicine Authors: Tags: Swiss Med Wkly Source Type: research
The aim of the study was to determine any discrepancies among preoperative full-leg standing radiographs (LLR) and supine non-weight-bearing computed tomography (CT)-scan-based three-dimensional (3D) models in the assessment of the lower limb alignment prior to total knee arthroplasty (TKA) and answer the question of whether the LLR study can be obviated in preoperative planning when TKA is performed with patient-specific instrumentation (PSI).
Source: The Knee - Category: Orthopaedics Authors: Source Type: research
Conclusion: This research study revealed that adequate training and skills are required in interpreting CBCT in endodontic treatment procedure among endodontists.
Source: Indian Journal of Dental Research - Category: Dentistry Authors: Source Type: research
ConclusionsAlthough nano-CT has many disadvantages, it enabled the 3D anatomical study of the FMMs in relation to the NLF when combined with iodine staining. We imported the 2D images obtained by nano-CT scanning into the Mimics software, successfully reconstructed the FMMs, and finally obtained images of complex 3D structures of the FMMs. The shapes, positions, and 3D spatial relationships of the FMMs were clearly visualized. The novel insights into the 3D anatomy of the FMMs may help understand the formation of the NLF. Finally, the results of this study may help improve the rejuvenation surgery of the NLF soon.Level of ...
Source: Aesthetic Plastic Surgery - Category: Cosmetic Surgery Source Type: research
Abstract Artificial intelligence (AI) is a general term that implies the use of a computer to model intelligent behavior with minimal human intervention. AI, particularly deep learning, has recently made substantial strides in perception tasks allowing machines to better represent and interpret complex data. Deep learning is a subset of AI represented by the combination of artificial neuron layers. In the last years, deep learning has gained great momentum. In the field of orthopaedics and traumatology, some studies have been done using deep learning to detect fractures in radiographs. Deep learning studies to det...
Source: Acta Orthopaedica - Category: Orthopaedics Authors: Tags: Acta Orthop Source Type: research
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