scholarly journals ASSESSMENT OF BONE QUALITY IN THE FRONTAL PART OF MANDIBLES IN FEMALE PATIENTS OF VARIOUS AGES USING CONE-BEAM COMPUTED TOMOGRAPHY

2020 ◽  
Vol 16 (3) ◽  
pp. 83-89
Author(s):  
Natal'ya Nurieva ◽  
Irina Shelegova ◽  
Dar'ya Vazhenina
Keyword(s):  
Bone Density ◽  
Optical Density ◽  
Cone Beam ◽  
Microsoft Excel ◽  
Female Patients ◽  
Lower Jaw ◽  
Frontal Part ◽  
Age Related ◽  
The Right ◽  
Symmetrical Points

Thing. The optical density of the lower jaw in the frontal part of female patients was studied, age-related differences in the optical density of the lower jaw were revealed. The aim is to reveal the variability of the values of optical density of the lower jaw in the anterior region in female patients. Methodology. Computed tomograms of the lower jaws of 26 patients were analyzed. The optical density of the bone was assessed using the method of computer densitometry in Hounsfield arbitrary units, measurements were carried out in the area of the root apexes of the lower canines. Statistical analysis was carried out using Microsoft Excel, Windows 9. Results. In 84.6 % of cases, the optical density of bone tissue in the area of 3.3 and 4.3 teeth is within the same class according to the Misch classification. In this group, 72.7 % of patients had class D2, 18.18 ― D1, 9 ― D3; in 15.4 %, the bone density on the right and left sides of the mandible belongs to D2 and D3. The optical density between two relatively symmetrical points is in the range from 2 to 238 units, between the right and left sides it is 129.66 HU. In the group of 30―39 (n = 6) years, in 50 % of cases, bone density belongs to class D2, in 33.33 ― D1, in 16.66 ― D3; 40―49 (n = 8) years in 87.5 % of cases ― D2, in 12.5 ― D1; 50―59 (n = 6) years at 50 % ― D2 and at 50 ― D3; 60―68 (n = 6) years at 50 % ― D2 and at 50 ― D3. Conclusions. With increasing age of patients, there is a decrease in bone density in the lower jaw in the canine area.

Improvement of the prosthodontic treatment protocol in patients with TMD via functional diagnosis

2021 ◽  
Vol 26 (2) ◽  
pp. 144-149
Author(s):  
L. V. Dubova ◽  
S. S. Prisyazhnykh ◽  
N. V. Romankova ◽  
D. I. Tagiltsev ◽  
G. V. Maksimov
Keyword(s):  
Treatment Protocol ◽  
Cone Beam ◽  
Control Group ◽  
Central Position ◽  
Optimal Position ◽  
Electrical Nerve Stimulation ◽  
Functional Diagnosis ◽  
Stabilization Splint ◽  
Lower Jaw ◽  
The Right

Relevance. The purpose of the research is to improve the functional diagnosis protocol in prosthodontic treatment of patients with TMD.Materials and methods. The optimal position of the mandible was determined for each patient by two methods: 1) TENS (transcutaneous electrical nerve stimulation) and 2) TENS + kinesiography. Then, the cone-beam computed tomography (CBCT) data were analyzed to determine the most physiological position of the condyles.Results. The analysis of the CT scans of patients without TMD (control group) showed that the right and left condyles occupy an anterior or central symmetrical position relative to the glenoid fossa. In the first and second methods, the condyles occupy an anterior or central position, which is the most optimal position of the lower jaw for the manufacturing of an occlusal stabilization splint. The statistical coefficients allowed us to determine that the second method was more accurate, since the obtained values were lower than those of the first method.Conclusion. Based on the results of this study, we can conclude that the improvement of the protocol, namely a new method for determining the optimal position of the mandible is more time-consuming, but more accurate and allows increasing the effectiveness at all stages of treatment of patients with this pathology.

scholarly journals General Influence of Biphasic Calcium Phosphate on Osteoporotic Bone Density

2019 ◽  
Vol 73 (2) ◽  
pp. 185-188
Author(s):  
Vladislavs Ananjevs ◽  
Aleksandra Ananjeva ◽  
Jānis Vētra ◽  
Andrejs Skaģers ◽  
Ilze Salma ◽  
...  
Keyword(s):  
Bone Density ◽  
Mass Density ◽  
Cone Beam ◽  
Bone Mass Density ◽  
Osteoporotic Bone ◽  
Left Femur ◽  
Experimental Osteoporosis ◽  
The Right ◽  
General Influence

Abstract Bone density of the femur body of rabbit was determined in vivo. Experimental osteoporosis was induced by ovariectomy and subsequent injections of methylprednisolone. In the greater trochanter region of right femur, defects were created and filled with granules of hydroxyapatite and tricalcium phosphate (HAP/TCP 70/30) or HAP/TCP 70/30 together with 5% strontium. After three months, the animals were euthanized. The bone mass density of the right and left body of femur was measured by cone beam computed tomography (CT) scan. The results of the study showed that the right femur of the rabbit, where biomaterials had been implanted, and the left femur, where no biomaterial implantation occurred, became denser after filling the defect with HAP/TCP 70/30 ceramic granules or 5% Sr modified HAP/TCP ceramic granules. There was no difference between operated and non-operated legs and HAP/TCP and HAP/TCP with 5% strontium groups.

Functional interaction of chewing muscles in children with dentoalveolar system anomalies

2021 ◽  
Vol 25 (2) ◽  
pp. 136-146
Author(s):  
I. V. Kosolapova ◽  
E. V. Dorokhov ◽  
M. E. Kovalenko ◽  
R. V. Lesnikov
Keyword(s):  
Correlation Analysis ◽  
Dental Treatment ◽  
Statistical Processing ◽  
Bioelectric Activity ◽  
Microsoft Excel ◽  
Lower Jaw ◽  
Muscle Groups ◽  
Dental Apparatus ◽  
The Right ◽  
Distal Occlusion

Relevance. The focus of modern dental treatment not only on the elimination of aesthetic, but also functional disorders requires an understanding of the functional conjugation of the chewing muscles, the possibility of interprognosis of parameters. Objective. Assess the functional relationship between the tone of the chewing muscles proper and the bioelectric activity of the temporal and sublingual muscle groups in children with anomalies of the dentoalveolar system. Materials and Methods. The study involved 36 patients of Childrens Clinical Dental Clinic No. 2 of Voronezh, aged 6 to 12 years, who had not previously received orthodontic treatment and had distal occlusion anomalies. Evaluation of the bioelectric activity of temporal and sublingual muscles was carried out using surface electromyography on the Electromyograph Dental apparatus (Taganrog, Russia), the Chewing General sample. Evaluation of the tone of the chewing muscles proper was carried out using the Mioton-3C device in a state of physiological rest of the lower jaw. Statistical processing was carried out using Microsoft Excel, version 7.0 and the statistical programs SPSS Statistics 21 and STATISTICA 7. Results and Discussion. Correlation analysis revealed the presence of 4 weak positive, 2 weak negative, 14 moderate positive, 3 moderate negative, and 1 noticeable positive correlation between the tone of the right chewing muscle proper and the parameters of the bioelectric activity of the right and left temporal and sublingual muscles. Correlation analysis revealed the presence of 5 weak positive, 7 weak negative, 9 moderate negative correlations between the tone of the left chewing muscle proper and the parameters of bioelectric activity of the right and left temporal and sublingual muscles. Conclusion. A greater effect of the tone of the right chewing muscle on the bioelectric activity of temporal and sublingual muscles was found compared to the tone of the left chewing muscle itself. 27 equations have been derived that can be used as predictive models for calculating the tone of right and left chewing muscles proper depending on the indicators of bioelectric activity of temporal and sublingual muscles.

scholarly journals Analisis ameloblastoma unilokuler menggunakan radiograf cone beam computed tomography (CBCT) 3D sebagai penunjang diagnosis

2020 ◽  
Vol 3 (3) ◽  
pp. 33
Author(s):  
Siska Damayanti Saifuddin ◽  
Farina Pramanik ◽  
Ria Noerianingsih Firman
Keyword(s):  
Case Report ◽  
Root Resorption ◽  
Cone Beam ◽  
The Past ◽  
Lower Jaw ◽  
Imaging Characteristics ◽  
Radiolucent Lesion ◽  
Inferior Border ◽  
The Right ◽  
Cortical Perforation

Objectives: This purpose of this  case report is to explain the imaging characteristics of unilocular ameloblastoma in CBCT 3D radiograph. Case Report: A 32-year-old male patient came to the dentist complaining his painful right lower jaw over the past few days. Clinical examination showed extensive swelling in the posterior region of the right mandible to cause asymmetry at the inferior border of the mandibular corpus. Panoramic radiography showed radiolucent area in periapical mesial root of 46 tooth, extending to the right angular mandibular with a clearly demarcated shape,  and there was a root resorption of 47 tooth. CBCT 3D examination showed the presence of unilocular radiolucent lesion in a regular shape and a clear borderline, extending to the inferior border of the mandible and causing buccal-lingual cortical perforation accompanied with the resorption of adjacent 47 tooth. Conclusion: CBCT is a supporting radiography that may act as a more accurate diagnostic tool for the diagnosis of unique ameloblastoma lesions.

scholarly journals STUDY OF THE ANATOMY OF THE MENTAL FORAMEN USING CONE-BEAM COMPUTER TOMOGRAPHY

2020 ◽  
Vol 16 (3) ◽  
pp. 90-95
Author(s):  
Irina Shelegova ◽  
Artur Heigetyan ◽  
Dar'ya Vazhenina ◽  
Natal'ya Nurieva
Keyword(s):  
Computed Tomography ◽  
Bone Tissue ◽  
Optical Density ◽  
Cone Beam Computed Tomography ◽  
Anatomical Variation ◽  
Mental Foramen ◽  
Cone Beam ◽  
Cortical Plate ◽  
Mineral Density ◽  
The Right

Subject. The article discusses the possibilities of cone-beam computed tomography in the study of the anatomy of the mental foramen: size, shape, topography, as well as the optical density of bone tissue at the mental foramen. The goal is to investigate the size, shape and topography of the mental foramen, as well as the optical density of bone tissue in it using cone-beam computed tomography. Methodology. The computed tomograms of the lower jaws of 26 patients were analyzed, according to which the vertical and horizontal dimensions of the mental openings were measured on the right and left, the number and sizes of additional mental openings, their location according to the Tebo and Telford classification, and the bone mineral density under the mental opening were determined. Statistical analysis was carried out using Microsoft Excel, Windows 9. Results. The resulting average dimensions of the right (4.01x3.93 mm) and left (3.81x3.95) mental holes confirm the results of more extensive studies done earlier. In the first case (1.9 %), an anatomical variation of the mental opening was revealed: 3 holes with dimensions 2.1×2.1 mm, 2.0×0.9, and 1.9×2.4. The symmetrical location of the chin foramen was found in 15 patients (57.7 %). In most cases, types III (25 %) and IV (53.84 %) of the location of the mental opening were identified. The average optical density of bone tissue under the mental foramen on the right side was 1618.9±145.1 HU, on the left ― 1571.64±159.64. There were no significant differences in the optical density of bone tissue for types II―IV of the location of the mental foramen. Conclusions. A significant variability in the topography of the mental foramen was revealed, in this regard, methods of mental anesthesia with a personalized approach, for example, the method of anesthesia of the intraosseous part of the chin nerve, are becoming relevant (authors Rabinovich S.A., Vasiliev Yu.L., Tsybulkin A.G.). High values of the optical density of bone tissue at the mental foramen confirm the ineffectiveness of diffusion of anesthetics through the cortical plate.

scholarly journals Crown root fracture imaging on Cone Beam Computed Tomography

2021 ◽  
Vol 5 (3) ◽  
pp. 112
Author(s):  
Anak Agung Gde Dananjaya Agung ◽  
Ni Ketut Ayu Lestarini
Keyword(s):  
Computed Tomography ◽  
Case Report ◽  
Fracture Line ◽  
Cone Beam ◽  
Root Fracture ◽  
Crown Root ◽  
Lower Jaw ◽  
Alveolar Crest ◽  
The Right ◽  
Lateral Periodontal Cyst

Objectives: This case report is aimed to describe the features of CBCT in assessing tooth fracture. Case Report: A 50-year-old man came with complaints of discomfort in the right lower jaw area, especially when used for chewing. The results of the percussion test were positive. CBCT examination showed that there was a radiolucent image of the enamel in the middle of the crown root to the 1/3 apical of the mesial and distal roots of tooth 47 which resembled a fracture line. The fracture line also appears to have reached the pulp. In addition, there is a well-defined radiolucent appearance with an irregular shape along the root from the buccal to lingual alveolar crest and accompanied by a decrease in the alveolar crest. The fracture that occurred in this case was from the enamel to the apical and involved the pulp, thus the radiodiagnosis on tooth 47 was a complicated crown root fracture with lateral periodontal cyst. Conclusion: CBCT can be used to help identify tooth fractures by obtaining a more accurate and useful value in differentiating conditions associated with fractures. CBCT provides data on the size and length of the fracture line and the size of the lesion.

Successful radiation therapy for primary cutaneous follicle center lymphoma

2019 ◽  
Vol 8 (2) ◽  
Author(s):  
Takashi Matsushita ◽  
Tomoyasu Kumano ◽  
Kazuhiko Takehara
Keyword(s):  
Radiation Therapy ◽  
Skin Biopsy ◽  
B Cell ◽  
B Cell Lymphomas ◽  
Solitary Lesion ◽  
Lower Jaw ◽  
First Choice ◽  
The Right

Primary cutaneous follicle center lymphoma (PCFCL) accounts for the majority of primary cutaneous B-cell lymphomas. We report a 60-year-old womanwith PCFCL. She had a red nodule (25 × 25 mm) on the right side of the lower jaw. She was diagnosed with PCFCL by skin biopsy. And then, she was treated with radiation therapy (total 30.6 Gy), which completely eliminated the nodule. Our case suggests that radiation therapy may be a first choice for PCFCL patients with a solitary lesion or localized lesions.    

scholarly journals Development of central auditory processes in Polish children and adolescents at the age from 7 to 16 years

2021 ◽  
Author(s):  
Monika Lewandowska ◽  
Rafał Milner ◽  
Małgorzata Ganc ◽  
Elżbieta Włodarczyk ◽  
Joanna Dołżycka ◽  
...  
Keyword(s):  
Children And Adolescents ◽  
School Students ◽  
Frequency Pattern ◽  
Speech In Noise ◽  
Age Related ◽  
Right Ear Advantage ◽  
The Right ◽  
Almost All ◽  
Test Retest Reliability ◽  
Auditory Processes

AbstractThere are discrepancies in the literature regarding the course of central auditory processes (CAP) maturation in typically developing children and adolescents. The purpose of the study was to provide an overview of age – related improvement in CAP in Polish primary and secondary school students aged 7–16 years. 180 children/adolescents, subdivided into 9 age categories, and 20 adults (aged 18–24 years) performed the Dichotic Digit Test (DDT), Duration Pattern Test (DPT), Frequency Pattern Test (FPT), Gap Detection Test (GDT) and adaptive Speech-in-Noise (aSpN). The 12-year-olds was retested after w week. We found the age effects only for the DDT, DPT and FPT. In the right ear DDT the 7-year-olds performed more poorly than all groups ≥12. In the left ear DDT both 7- and 8-year-olds achieved less correct responses compared with the 13-, 14-, 15-year-olds and with the adults. The right ear advantage was greater in the 7-year-olds than in the 15-year-olds and adult group. At the age of 7 there was lower DPT and FPT scores than in all participants ≥13 whereas the 8-year-olds obtained less correct responses in the FPT than all age categories ≥12. Almost all groups (except for the 7-year-olds) performed better in the DPT than FPT. The test-retest reliability for all tests was satisfactory. The study demonstrated that different CAP have their own patterns of improvement with age and some of them are specific for the Polish population. The psychoacoustic battery may be useful in screening for CAP disorders in Poland.

scholarly journals Macular Pigment Optical Density and Photoreceptor Outer Segment Length as Predisease Biomarkers for Age-Related Macular Degeneration

2020 ◽  
Vol 9 (5) ◽  
pp. 1347 ◽  
Author(s):  
Norihiro Nagai ◽  
Sakiko Minami ◽  
Misa Suzuki ◽  
Hajime Shinoda ◽  
Toshihide Kurihara ◽  
...  
Keyword(s):  
Macular Degeneration ◽  
Optical Density ◽  
Outer Segment ◽  
Macular Pigment ◽  
Age Related Macular Degeneration ◽  
Segment Length ◽  
Macular Pigment Optical Density ◽  
Photoreceptor Outer Segment ◽  
Age Related ◽  
Fellow Eyes

To explore predisease biomarkers, which may help screen for the risk of age-related macular degeneration (AMD) at very early stages, macular pigment optical density (MPOD) and photoreceptor outer segment (PROS) length were analyzed. Thirty late AMD fellow eyes, which are at high risk and represent the predisease condition of AMD, were evaluated and compared with 30 age-matched control eyes without retinal diseases; there was no early AMD involvement in the AMD fellow eyes. MPOD was measured using MPS2® (M.E. Technica Co. Ltd., Tokyo, Japan), and PROS length was measured based on optical coherence tomography images. MPOD levels and PROS length in the AMD fellow eyes were significantly lower and shorter, respectively, than in control eyes. MPOD and PROS length were positively correlated in control eyes (R = 0.386; p = 0.035) but not in AMD fellow eyes. Twenty (67%) AMD fellow eyes met the criteria of MPOD < 0.65 and/or PROS length < 35 μm, while only five (17%) control eyes did. After adjusting for age and sex, AMD fellow eyes more frequently satisfied the definition (p < 0.001; 95% confidence interval, 3.50–60.4; odds ratio, 14.6). The combination of MPOD and PROS length may be a useful biomarker for screening predisease AMD patients, although further studies are required in this regard.

Asymmetry in Event-Related Potentials to Simulated Auditory Motion in Children, Young Adults, and Seniors

2002 ◽  
Vol 13 (01) ◽  
pp. 001-013 ◽  
Author(s):  
James Jerger ◽  
Rebecca Estes
Keyword(s):  
Young Adults ◽  
Right Hemisphere ◽  
Apparent Movement ◽  
Event Related Potentials ◽  
Auditory Evoked Responses ◽  
Age Related ◽  
Related Potentials ◽  
Velocity Information ◽  
The Right ◽  
Age Range

We studied auditory evoked responses to the apparent movement of a burst of noise in the horizontal plane. Event-related potentials (ERPs) were measured in three groups of participants: children in the age range from 9 to 12 years, young adults in the age range from 18 to 34 years, and seniors in the age range from 65 to 80 years. The topographic distribution of grand-averaged ERP activity was substantially greater over the right hemisphere in children and seniors but slightly greater over the left hemisphere in young adults. This finding may be related to age-related differences in the extent to which judgments of sound movement are based on displacement versus velocity information.

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