scholarly journals Computed tomography-assisted morphological assessment of the components of the temporomandibular joint – a pilot study

New Medicine ◽  
2020 ◽  
Vol 24 (1) ◽  
Author(s):  
Maja Stańczyk ◽  
Ronald Lukashevich ◽  
Aleksandra Gorzkowska ◽  
Paulina Urbańska ◽  
Piotr Laskowski ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Temporomandibular Joint ◽  
Oral Surgery ◽  
Maxillofacial Surgery ◽  
Accurate Analysis ◽  
Asymptomatic Patients ◽  
Mandibular Fossa ◽  
Group 2 ◽  
Medical University ◽  
Group 1

Introduction. Temporomandibular joint (TMJ) disorders are a common diagnostic problem. No universal radiological parameter of the analysis was introduced. Aim. Comparison of values of selected radiological parameters between asymptomatic patients and those with the TMJ arthropathy. Material and methods. Retrospective analysis of CT scans of patients of the Department of Dental and Maxillofacial Radiology and the Department of Cranio-Maxillofacial Surgery, Oral Surgery and Implantology, Medical University of Warsaw. Patients were divided into two groups: 1. without TMJ disorders, 2. with TMJ dysfunction symptoms. Following parameters of heads of mandible were analyzed bilaterally: shape, anteroposterior and lateromedial dimensions, the distance between lateral points of both heads (HL-HR), distance between a head and the mandibular fossa. The angle between the horizontal axis of the head of mandible and the line drawn by posterior points of heads of mandible was measured. Results. The most common type of the head of mandible in group 1 (40 patients; 13 women, 27 men) was convex (14 patients), in group 2 (16 patients; 14 women, 2 men) – plane (8 patients). Significant differences between groups were obtained for: GL-GP (group 1 – 120.35 mm, group 2 – 115.4 mm), dimensions of heads of mandible: lateromedial – 19.7 mm, 18.14 mm, anteroposterior – 8.03 mm, 7.04 mm for group 1 and 2, respectively. Conclusions. Computed tomography allowed for an accurate analysis of the TMJ components. Measurements of structures discussed in this work should be a part of the diagnosis of patients with TMJ dysfunction.

scholarly journals A tissue-engineered urinary conduit in a porcine urinary diversion model

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Arkadiusz Jundziłł ◽  
Piotr Kwieciński ◽  
Daria Balcerczyk ◽  
Tomasz Kloskowski ◽  
Dariusz Grzanka ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Urinary Diversion ◽  
Porcine Model ◽  
Histological Evaluation ◽  
Metabolic Complications ◽  
Group 3 ◽  
Group 2 ◽  
The Right ◽  
Group 1

AbstractThe use of an ileal segment is a standard method for urinary diversion after radical cystectomy. Unfortunately, utilization of this method can lead to numerous surgical and metabolic complications. This study aimed to assess the tissue-engineered artificial conduit for urinary diversion in a porcine model. Tissue-engineered tubular polypropylene mesh scaffolds were used for the right ureter incontinent urostomy model. Eighteen male pigs were divided into three equal groups: Group 1 (control ureterocutaneostomy), Group 2 (the right ureter-artificial conduit-skin anastomoses), and Group 3 (4 weeks before urostomy reconstruction, the artificial conduit was implanted between abdomen muscles). Follow-up was 6 months. Computed tomography, ultrasound examination, and pyelogram were used to confirm the patency of created diversions. Morphological and histological analyses were used to evaluate the tissue-engineered urinary diversion. All animals survived the experimental procedures and follow-up. The longest average patency was observed in the 3rd Group (15.8 weeks) compared to the 2nd Group (10 weeks) and the 1st Group (5.8 weeks). The implant’s remnants created a retroperitoneal post-inflammation tunnel confirmed by computed tomography and histological evaluation, which constitutes urostomy. The simultaneous urinary diversion using a tissue-engineered scaffold connected directly with the skin is inappropriate for clinical application.

A volumetric three-dimensional evaluation of invasiveness of an endoscopic and microscopic approach for transmeatal visualisation of the middle ear

2021 ◽  
pp. 1-5
Author(s):  
A H A Baazil ◽  
J G G Dobbe ◽  
E van Spronsen ◽  
F A Ebbens ◽  
F G Dikkers ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Middle Ear ◽  
Three Dimensional ◽  
Endoscopic Approach ◽  
Microscopic Approach ◽  
Significant Difference ◽  
Computed Tomography Scans ◽  
The Difference ◽  
Group 2 ◽  
Group 1

Abstract Objective This study aimed to compare the necessary scutum defect for transmeatal visualisation of middle-ear landmarks between an endoscopic and microscopic approach. Method Human cadaveric heads were used. In group 1, middle-ear landmarks were visualised by endoscope (group 1 endoscopic approach) and subsequently by microscope (group 1 microscopic approach following endoscopy). In group 2, landmarks were visualised solely microscopically (group 2 microscopic approach). The amount of resected bone was evaluated via computed tomography scans. Results In the group 1 endoscopic approach, a median of 6.84 mm3 bone was resected. No statistically significant difference (Mann–Whitney U test, p = 0.163, U = 49.000) was found between the group 1 microscopic approach following endoscopy (median 17.84 mm3) and the group 2 microscopic approach (median 20.08 mm3), so these were combined. The difference between the group 1 endoscopic approach and the group 1 microscopic approach following endoscopy plus group 2 microscopic approach (median 18.16 mm3) was statistically significant (Mann–Whitney U test, p < 0.001, U = 18.000). Conclusion This study showed that endoscopic transmeatal visualisation of middle-ear landmarks preserves more of the bony scutum than a microscopic transmeatal approach.

scholarly journals The volume of left atrium measured by multi-detector computed tomography can predict of long term outcome in catheter ablation of atrial fibrillation

2021 ◽  
Vol 22 (Supplement_3) ◽  
Author(s):  
YR Kim
Keyword(s):  
Computed Tomography ◽  
Atrial Fibrillation ◽  
Catheter Ablation ◽  
Left Atrium ◽  
Volume Estimation ◽  
Term Outcome ◽  
Long Term Outcome ◽  
Group 2 ◽  
Group 1

Abstract Funding Acknowledgements Type of funding sources: None. Background This study aimed to identify the volume left atrium (LA) and left atrial appendage (LAA) calculated by multidetector computed tomography (MDCT) is related to the long term out come of radiofrequency catheter ablation (RFCA) for atrial fibrillation(AF). Methods We analyzed data from 99 consecutive patients who referred for RFCA due to drug-refractory symptomatic AF (age 56 ± 10 years; 74% men; 64% paroxysmal AF). Prior to the procedure, all patients underwent ECG-gated 128 channels MDCT scan for assessment for pulmonary vein  anatomy, LA and LAA volume estimation, and electro-anatomical mapping integration.  Results The volume of LA and LAA calculated by CT was 142.6 ± 32.2 mL and 14.7 ± 6.0 mL, respectively. LA volume was smaller in paroxysmal AF(PAF) than persistent AF(PeAF) (133.9 ± 29.3 mL vs. 158.0 ± 31.4 mL, p &lt; 0.0001) but  LAA volume was not significantly different between PAF and PeAF(13.9 ± 5.0 mL vs. 16.3 ± 7.3 mL, p = 0.09). Patients were classified into 2 groups by the LA volume of 160mL; group 1  (LA volume &lt; 160mL,n = 73) and group 2 (LA volume ≥160mL, n = 26). After a mean follow up 12.6 ± 5.3 months, 78.8% of the patients maintained sinus rhythm after the index ablation. AF free survival was significantly greater in group  1 than group 2 (84.9% vs. 61.5% p = 0.017). No relationship was found between LAA volume and the outcome of RFCA. Multivariate analysis showed that the LA volume &gt;160mL was an independent predictor of arrhythmia-free after ablation (Hazard ration 2.55, 95% confidential interval 1.02-6.35, p = 0.045) Conclusion Higher LA volume is independent risk factor for AF recurrence after RFCA but not LAA volume. The LA volume quickly assessed by MDCT could be a good predictor of long term recurrence after AF ablation.

Effect of Unilateral Accessory Navicular Bone on Radiologic Parameters of Foot

2020 ◽  
pp. 107110072096482
Author(s):  
Mustafa Kara ◽  
Serkan Bayram
Keyword(s):  
Navicular Bone ◽  
Level Of Evidence ◽  
First Metatarsal ◽  
Metatarsal Angle ◽  
Asymptomatic Patients ◽  
Accessory Navicular ◽  
The Mean ◽  
Group 2 ◽  
Group 1

Background: This study aimed to compare the radiologic parameters of both feet in patients with unilateral accessory navicular bone (ANB) and evaluate the differences from one another. Methods: Forty-one patients with unilateral ANB volunteered to participate in this study from August 2019 to January 2020. Patient data, including age, sex, body mass index (BMI), type of ANB, and presence of symptoms were obtained. Group 1 comprised 23 patients with asymptomatic unilateral ANB, and group 2 comprised 18 patients with symptomatic unilateral ANB. Seven radiologic parameters were evaluated assessing hindfoot, midfoot, and forefoot alignment—calcaneal pitch angle, talocalcaneal angle, tibiocalcaneal angle, naviculocuboid overlap (NCO), talonavicular coverage angle (TNCA), anteroposterior talo–first metatarsal angle, and lateral talo–first metatarsal angle. Results: The mean age of patients was 40.1 years in group 1 and 42.6 years in group 2. Mean BMI was 25.2 in group 1 and 26.6 in group 2. No significant differences were noted in the radiologic parameters between the ANB and contralateral sides in all patients. The radiologic parameters of both feet in symptomatic and asymptomatic patients were not significantly different. No significant differences were noted between the affected sides of type 1 and 2 ANB and contralateral sides in terms of the radiologic parameters. BMI was significantly correlated with NCO and TNCA. Conclusion: This study demonstrated that the presence of an accessory navicular bone did not affect radiologic parameters of the foot. Radiologic parameters of both feet in symptomatic patients were not significantly different. Level of Evidence: Level III, diagnostic, comparative study.

scholarly journals INSTRUMENTAL AND LABORATORY STUDY OF JAW MINERALIZATION LEVEL IN FEMALE PATIENTS WITH ESTROGEN IMBALANCE

2020 ◽  
Vol 10 (02) ◽  
pp. 819-827
Author(s):  
Leonid D. Chulak, Oleksandr S. Barylo, Nataliia G. Gadzhula Georgij M. Varava, Ruslan L. Furman*, Kyryl V. Agafonov
Keyword(s):  
Computed Tomography ◽  
Acid Phosphatase ◽  
Control Group ◽  
Bone Demineralization ◽  
Female Patients ◽  
Carious Lesions ◽  
Group 2 ◽  
Tomography Method ◽  
Experimental Group ◽  
Group 1

Introduction: Prevention of dental caries and non-carious lesions associated withdemineralizing effect of estrogen imbalance in perimenopause women isrelevant problem in modern dentistry.The aim: To improve the effectiveness of prevention of caries and non-cariouslesions in female patients with estrogen imbalance.Materials and methods: 3 groups of patients were selected for the study (20women in each): the patients of the control group receiving no additionaltreatment, the patients of experimental group 1 receiving general therapy withcomplex calcium supplements, the patients of experimental group 2 receivinggeneral therapy of complex calcium medicines combined withaminobisphosphonates.To quantify bone density of the jaws by computed tomography method, X-rayattenuation scale, called the Hounsfield scale was used. Bone tissues of the jawswere studied using 3D cone beam computed tomography scanner PlanmecaProMax. Planmeca Romexis® software was used for data processing andinterpretation. Estrogen level was estimated in all patients to confirm itsimbalance. The level of serum acid phosphatase was determined for indirectstudy of osteoporosis degree.Results: At the beginning of the research, significant bone demineralization andincreased level of acidic phosphatase were observed in all groups of women. In6 months of treatment the Hounsfield index and the level of acidic phosphatasein the control group were almost unchanged; in experimental group 1 – 1571±44 HU and 4.93 ± 0.26 IU/l; in experimental group 2 – 1701±48 HU and 2.43± 0.18 IU/l.Conclusions: Combination therapy consisting of calcium phosphate withvitamin D3 and aminobisphosphonates used for 6 months increased bonemineralization by 13.05% and reduced the activity of acid phosphatase by64.2%. This therapeutic complex results in decreased destruction of bone tissueand enhances remineralization of bone tissue and dental hard tissues.Key words: teeth mineralization, osteoporosis, estrogen dysfunction, Hounsfieldindex.

scholarly journals Study of the Clinical Efficiency of an Interdisciplinary Approach to the Treatment of Orofacial Pain and Temporomandibular Joint Disorders in Patients with Complete or Partial Edentulism

2020 ◽  
Vol 14 (04) ◽  
pp. 657-664
Author(s):  
Fatima Dzalaeva ◽  
Sergey Chikunov ◽  
Marina Bykova ◽  
Mikhail Deev ◽  
Mariami Okromelidze
Keyword(s):  
Temporomandibular Joint ◽  
Orofacial Pain ◽  
Interdisciplinary Approach ◽  
Temporomandibular Joint Disorders ◽  
Clinical Efficiency ◽  
Results Of Treatment ◽  
Reduction Of Pain ◽  
Group 2 ◽  
Opening And Closing ◽  
Group 1

Abstract Objective The aim of this study is to improve the safety and efficiency of prosthodontic treatment of patients with dental defects. It is necessary to perform a comprehensive assessment of the dentofacial system disorders, including the analysis of the features of pain manifestations. This study also supports to improve the efficiency of prosthodontic rehabilitation of patients with complete dental reconstruction on the basis of an assessment of the severity of orofacial pain manifestations. Materials and Methods The study was a single-site prospective open nonrandomized study with the examination and treatment of 452 patients (age = 44.3 ± 15.2 years, including 282 men and 170 women) with partial or total edentulism. The patients were divided into two groups: group 1 (control) of 218 patients treated with a standard prosthodontic approach and group 2 (study) of 234 patients treated which the proposed interdisciplinary approach to prosthodontic rehabilitation. Results  The study establishes higher safety and clinical efficiency of the proposed interdisciplinary approach. The patients undergoing full-mouth reconstruction with the use of the interdisciplinary approach demonstrated statistically significant decrease in the rate of pain in muscles of the maxillofacial area on palpation, pain, and spasms in the neck area, statistically significantly less frequent pains in the temporomandibular joint (TMJ) during chewing, pain during opening and closing the mouth. Conclusion The application of the developed comprehensive approach to prosthodontic rehabilitation planning makes it possible to improve essentially the results of treatment at the expense of reduction of pain manifestations in the area of maxillofacial muscles and pain sensations associated with functioning of the TMJ.

Echinococcosis of the liver in children

2021 ◽  
Vol 26 (4) ◽  
pp. 24-31
Author(s):  
A. Yu. Razumovsky ◽  
A. N. Smirnov ◽  
V. V. Kholostova ◽  
N. A. Al-Mashat ◽  
A. E. Stepanov ◽  
...  
Keyword(s):  
Standard Procedure ◽  
Treatment Protocol ◽  
Argon Plasma ◽  
Constant Frequency ◽  
Central Russia ◽  
Russian State ◽  
Significant Difference ◽  
Group 2 ◽  
Medical University ◽  
Group 1

Aim. The paper presents the experience of treatment of echinococcal cysts in children, which reflects most of the existing methods of treatment.Materials and methods. From 2010 to 2021, 81 patients with hepatic echinococcosis aged from 3 to 17 years (average 14.3 ± 1.3) were treated at the bases of the Department of Pediatric Surgeons of the Pirogov Russian State Medical University. All patients were examined according to the standard procedure, including: general clinical examination, examination of liver function, ultrasonography, chest X-ray, CT scan, blood test for IgG to echinococcus antigens. All children were divided into 2 groups according to the type of the surgery: in the group 1, 27 (33.3%) children underwent laparoscopic surgery; in the group 2, 54 (66.7%) children – laparotomy.Results. The treatment duration accounted 12.5 ± 3.1 days in group 1 and 9.2 ± 1.3 days in group 2 (p < 0.0067). In the group 1 the drainage duration was higher (6.8 ± 0.6) than in the group 2 (4.1 ± 0.3) (p < 0.03). Complications occurred in 7 patients, relapse of cysts – in 2 patients.Conclusion. Children with echinococcal cysts in Central Russia occur with a constant frequency and require to apply modern approaches in diagnosis and treatment. The classification and treatment protocol of echinococcosis, adopted by WHO, are easy-to-use and proves its effectiveness. There is no significant difference in germicidal agents’ effect on echinococcus and the effect on the development of relapse. The method of selection in the treatment of solitary and superficial cysts is laparoscopic interference with the mandatory application of a PAIR and a high-power aspirator. An important stage of the interference is the treatment of the fibrous capsule of the cyst, if it is impossible to completely remove it, with an argon-plasma coagulator.

The Infratemporal Fossa Sign: Pilot Study of a Potential Clue to Eustachian Salpingitis

2020 ◽  
pp. 019459982094021
Author(s):  
Edward D. McCoul
Keyword(s):  
Temporomandibular Joint ◽  
Infratemporal Fossa ◽  
External Ear ◽  
Temporomandibular Joint Dysfunction ◽  
Middle Ear Pressure ◽  
Single Finger ◽  
Group 3 ◽  
Preliminary Study ◽  
Group 2 ◽  
Group 1

Aural discomfort may be the result of obstructive eustachian tube (ET) dysfunction, temporomandibular joint dysfunction, or other causes. The infratemporal fossa (ITF) sign, in which a patient points to a characteristic location below the auricle, is proposed as an indicator of nonobstructive eustachian salpingitis. A preliminary study included patients with a complaint of aural discomfort who were prompted to localize symptoms using a single finger. Group 1 localized by using the ITF sign; group 2 localized deep within the external ear canal (suggesting ET dysfunction); and group 3 localized to the preauricular region (suggesting temporomandibular joint dysfunction). Findings of ET inflammation recorded during nasal endoscopy were greater in groups 1 and 2. Tympanometry and otoscopy were uniformly abnormal for group 2 and uniformly normal for groups 1 and 3. The ITF sign may help to identify eustachian salpingitis as a phenotype of ET disease characterized by symptomatic inflammation without abnormal middle ear pressure.

scholarly journals Analysis of TMJ vibration sounds before and after use of two types of occlusal splints

2009 ◽  
Vol 20 (4) ◽  
pp. 325-330 ◽  
Author(s):  
Marcelo Oliveira Mazzeto ◽  
Takami Hirono Hotta ◽  
Rafaela Galli Mazzetto
Keyword(s):  
Temporomandibular Joint ◽  
Temporomandibular Disorders ◽  
Recording System ◽  
Dental School ◽  
Vibration Energy ◽  
Study Group ◽  
Occlusal Splints ◽  
Before And After ◽  
Group 2 ◽  
Group 1

Temporomandibular joint (TMJ) sounds are important and common physical signs of temporomandibular disorders (TMD). The aim of this study was to evaluate the influence of the effect of the use of occlusal bite splints (stabilizing and repositioning) on the sounds produced in the TMJ, by means of the electrovibratography (EVG). Thirty-one patients with TMD from the Dental School of Ribeirão Preto, University of São Paulo, Brazil were selected for this study. Group 1 (n=23) wore stabilizing bite splints and Group 2 (n=8) used anterior repositioning splints. Before and after treatment with occlusal splints both groups were analyzed using the SonoPAK Q/S recording system (BioResearch System, Inc.). The treatments with stabilizing bite splints were satisfactory, since they reduced the total amount of the sound energies (p<0.05), but the use of anterior repositioning splints for no more than 4 weeks produced significantly better results (p<0.01). The total amount of vibration energy involved in the vibrating movements of the TMJ showed significant improvement using anterior repositioning splints.

Efficacy of Neurolytic Celiac Plexus Block in Varying Locations of Pancreatic Cancer

2000 ◽  
Vol 92 (2) ◽  
pp. 347-347 ◽  
Author(s):  
Jan J. Rykowski ◽  
Maciej Hilgier
Keyword(s):  
Computed Tomography ◽  
Pancreatic Cancer ◽  
Pain Relief ◽  
Celiac Plexus ◽  
Celiac Plexus Block ◽  
Head Of The Pancreas ◽  
Group 2 ◽  
Effective Pain Relief ◽  
Plexus Block ◽  
Group 1

Background Neurolytic celiac plexus block (NCPB) is an effective way of treating severe pain in some patients with pancreatic malignancy. However, there are no studies to date that evaluate the effectiveness of NCPB related to the site of primary pancreas cancer. The aim of the study was to assess the effectiveness of NCPB in pancreatic cancer pain, depending on the location of the pancreatic tumor. Methods The prospective study was conducted in 50 consecutive patients diagnosed with pancreatic cancer. The patients were categorized into two different groups depending on tumor localization: group 1: patients with the cancer of the head of the pancreas and group 2: patients with the cancer of the body and tail of the pancreas. The qualitative and quantitative pain analyses were performed before and after NCPB. The patients underwent prognostic celiac plexus block with bupivacaine, followed by neurolysis during fluoroscopic control within the next 24 h. Results After NCPB, 37 patients (74%) had effective pain relief during the first 3 months or until death. Of the 37 patients who had effective pain relief, 33 (92%) were from group 1 and 4 (29%) were from group 2. In the remaining 13 patients (3 patients from group 1 and 10 patients from group 2), pain relief after NCPB was not satisfactory. Those patients were scheduled for repeated retrocrural neurolysis during computed tomography control. Computed tomography showed massive growth of the tumor around the celiac axis with metastases. After repeated neurolysis, pain relief clinically still was not satisfactory, necessitating additional opioid treatment. Conclusion In this study, unilateral transcrural celiac plexus neurolysis has been shown to provide effective pain relief in 74% of patients with pancreatic cancer pain. Neurolysis was more effective in cases with tumor involving the head of the pancreas. In the cases with advanced tumor proliferation, regardless of the technique used, the analgesic effects of NCPB were not satisfactory.

Sign in / Sign up

Export Citation Format

Share Document