scholarly journals Midpalatal Suture Density CBCT Evaluation, Sex Gender and Growth Pattern Related Variability in 392 Adolescents Treated With Rapid Maxillary Expander Appliance

2022 ◽  
Author(s):  
Monica Macrì ◽  
Elena Toniato ◽  
Giovanna Murmura ◽  
Giuseppe Varvara ◽  
Felice Festa
Keyword(s):  
Bone Density ◽  
Young Patients ◽  
Region Of Interest ◽  
Similar Rate ◽  
Class Iii ◽  
Midpalatal Suture ◽  
Density Values ◽  
Scan Data ◽  
Similar Density ◽  
Bone Deposition

The aim of this paper was to evaluate the changes in the mean bone density values of the midpalatal suture in 392 young patients treated with the Rapid Palatal Expander appliance according to sex, gender, vertical and sagittal skeletal patterns. Materials and Methods. The evaluations were performed using the low-dose protocol cone-beam computed tomography scans at t0 (preoperatively) and t1 (1 year after the beginning of the therapy). The region of interest was used to calculate bone density in Hounsfield units (HU) in the area between the maxillary incisors. Results. CBCT scan data of 196 females and 196 males (mean age of 11,7 years) showed homogeneous and similar density values of the MPS at T0 (547.59 HU - 565.85 HU) and T1 (542.31 - 554.20 HU). Class III skeletal individuals showed a significant higher BD than the II class group at T0, but not at T1. Females showed significantly higher BD than males at t0 and t1. No significant differences were found between the other groups and between two-time points in terms of bone density values of the MPS. Conclusions. Females and III class groups showed significantly higher bone density values than males and II class, respectively. No statistically significant differences were found from T0 to T1 in any groups, suggesting that a similar rate of suture reorganization occurs after the use of the RPE, following reorganization and bone deposition along with the MPS.

scholarly journals A CBCT Evaluation of Midpalatal Bone Density in Various Skeletal Patterns

Sensors ◽  
2021 ◽  
Vol 21 (23) ◽  
pp. 7812
Author(s):  
Jong-Moon Chae ◽  
Leah Rogowski ◽  
Suchita Mandair ◽  
R. Curtis Bay ◽  
Jae Hyun Park
Keyword(s):  
Bone Density ◽  
Age Groups ◽  
Class Ii ◽  
Horizontal Line ◽  
Class Iii ◽  
Midpalatal Suture ◽  
Mandibular Plane ◽  
Skeletal Pattern ◽  
Pattern Differentiation ◽  
Angle Class Iii

The purpose of this study was to evaluate midpalatal bone density (BD) by using cone-beam computed tomography (CBCT) according to gender, age, and vertical and horizontal skeletal patterns. CBCT images from 126 subjects (64 females and 62 males) were reoriented and analyzed in order to attain BD values at the midpalatal suture. Four age groups were used for classification (adolescence, 10 ≤ early < 14 years, 14 ≤ middle ≤ 17 years, and 17 < late ≤ 21 years; adult > 21 years). Vertical skeletal pattern categories were differentiated by the Frankfort horizontal line to mandibular plane angle (hypodivergent < 22°, 22° ≤ normovergent ≤ 28°, and 28° < hyperdivergent). Horizontal skeletal pattern differentiation was defined by ANB angle (Class III < 0°, 0° ≤ Class I ≤ 4°, and 4° < Class II). Females showed significantly higher BD than males (p < 0.001). As age increased, BD increased significantly (p < 0.001). There were no significant differences between vertical skeletal patterns. Class II showed significantly less BD than Class III (p < 0.05). With this information, clinicians can better understand BD trends of the midpalatal suture and, thus, better understand our patient’s anatomy and potential hurdles in successful treatment.

OSTEOPOROSIS AND RISK FACTORS IN THE PATIENTS ON CHRONIC HEMODIALYSIS

2015 ◽  
pp. 50-58
Author(s):  
Thi Dung Nguyen ◽  
Tam Vo
Keyword(s):  
Quality Of Life ◽  
Risk Factors ◽  
Bone Density ◽  
Region Of Interest ◽  
Cross Sectional Study ◽  
Chronic Hemodialysis ◽  
Cross Sectional ◽  
X Ray ◽  
Density Reduction

Background: The patients on hemodialysis have a significantly decreased quality of life. One of many problems which reduce the quality of life and increase the mortality in these patients is osteoporosis and osteoporosis associated fractures. Objectives: To assess the bone density of those on hemodialysis by dual energy X ray absorptiometry and to examine the risk factors of bone density reduction in these patients. Patients and Method: This is a cross-sectional study, including 93 patients on chronic hemodialysis at the department of Hemodialysis at Cho Ray Hospital. Results: Mean bone densities at the region of interest (ROI) neck, trochanter, Ward triangle, intertrochanter and total neck are 0.603 ± 0.105; 0.583 ± 0.121; 0.811 ± 0.166; 0.489 ± 0.146; 0.723 ± 0.138 g/cm2 respectively. The prevalences of osteoporosis at those ROI are 39.8%, 15.1%; 28%; 38.7%; and 26.9% respectively. The prevalences of osteopenia at those ROI are 54.8%; 46.3%; 60.2%; 45.2% and 62.7% respectively. The prevalence of osteopososis in at least one ROI is 52.7% and the prevalence of osteopenia in at least one ROI is 47.3%. There are relations between the bone density at the neck and the gender of the patient and the albuminemia. Bone density at the trochanter is influenced by gender, albuminemia, calcemia and phosphoremia. Bone density at the intertrochanter is affected by the gender. Bone density at the Ward triangle is influenced by age and albuminemia. Total neck bone density is influenced by gender, albuminemia and phosphoremia. Conclusion: Osteoporosis in patients on chronic hemodialysis is an issue that requires our attention. There are many interventionable risk factors of bone density decrease in these patients. Key words: Osteoporosis, DEXA, chronic renal failure, chronic hemodialysis

scholarly journals Holter-Derived Autonomic Function, Arrhythmias and Carbohydrate Metabolism in Patients with Class III Obesity Treated with Laparoscopic Sleeve Gastrectomy

2021 ◽  
Vol 10 (10) ◽  
pp. 2140
Author(s):  
Piotr Bienias ◽  
Zuzanna Rymarczyk ◽  
Justyna Domienik-Karłowicz ◽  
Wojciech Lisik ◽  
Piotr Sobieraj ◽  
...  
Keyword(s):  
Insulin Resistance ◽  
Heart Rate ◽  
Weight Loss ◽  
Sleeve Gastrectomy ◽  
Laparoscopic Sleeve Gastrectomy ◽  
Carbohydrate Metabolism ◽  
Autonomic Function ◽  
Young Patients ◽  
Resistance Index ◽  
Class Iii

The effects of weight loss following bariatric surgery on autonomic balance, arrhythmias and insulin resistance are still of interest. We prospectively investigated 50 patients with BMI > 40 kg/m2, aged 36.5 (18–56) years who underwent laparoscopic sleeve gastrectomy. Among other examinations, all subjects had 24-h Holter monitoring with heart rate variability (HRV) and heart rate turbulence (HRT) evaluation. After a median of 15 months, BMI decreased from 43.9 to 29.7 kg/m2, the incidence of hypertension decreased from 54 to 32% (p = 0.04) and any carbohydrate disorders decreased from 24 to 6% (p = 0.02). Fasting insulin concentration and insulin resistance index improved significantly (p < 0.001). Improvements in HRV parameters related to the sympathetic autonomic division were also observed (p < 0.001), while HRT evaluation was not conclusive. The enhancement of autonomic tone indices was correlated with reduction of BMI (SDNN-I r = 0.281 p = 0.04; SDNN r = 0.267 p = 0.05), but not with reduction of waist circumference, and it was also associated with decrease of mean heart rate (OR 0.02, 95%CI 0.0–0.1, p < 0.001). The incidence of arrhythmias was low and similar before and after follow-up. In conclusion, improvement of homeostasis of carbohydrate metabolism and autonomic function is observed in relatively young patients after weight loss due to laparoscopic sleeve gastrectomy.

scholarly journals Inlay-Retained Dental Bridges—A Finite Element Analysis

2021 ◽  
Vol 11 (9) ◽  
pp. 3770
Author(s):  
Monica Tatarciuc ◽  
George Alexandru Maftei ◽  
Anca Vitalariu ◽  
Ionut Luchian ◽  
Ioana Martu ◽  
...  
Keyword(s):  
Finite Element ◽  
Young Patients ◽  
Maximum Pressure ◽  
Class Iii ◽  
Element Analysis ◽  
Dental Prostheses ◽  
Abutment Teeth ◽  
Fixed Dental Prostheses ◽  
Implant Therapy ◽  
The Stability

Inlay-retained dental bridges can be a viable minimally invasive alternative when patients reject the idea of implant therapy or conventional retained full-coverage fixed dental prostheses, which require more tooth preparation. Inlay-retained dental bridges are indicated in patients with good oral hygiene, low susceptibility to caries, and a minimum coronal tooth height of 5 mm. The present study aims to evaluate, through the finite element method (FEM), the stability of these types of dental bridges and the stresses on the supporting teeth, under the action of masticatory forces. The analysis revealed the distribution of the load on the bridge elements and on the retainers, highlighting the areas of maximum pressure. The results of our study demonstrate that the stress determined by the loading force cannot cause damage to the prosthetic device or to abutment teeth. Thus, it can be considered an optimal economical solution for treating class III Kennedy edentation in young patients or as a provisional pre-implant rehabilitation option. However, special attention must be paid to its design, especially in the connection area between the bridge elements, because the connectors and the retainers represent the weakest parts.

Bone density of the midpalatal suture 7 months after surgically assisted rapid palatal expansion in adults

2011 ◽  
Vol 139 (4) ◽  
pp. S109-S116 ◽  
Author(s):  
Silvia Petrick ◽  
Thorsten Hothan ◽  
Volker Hietschold ◽  
Matthias Schneider ◽  
Winfried Harzer ◽  
...  
Keyword(s):  
Bone Density ◽  
Midpalatal Suture ◽  
Palatal Expansion ◽  
Rapid Palatal Expansion

Dual Energy X-Ray Absorptiometry-Based Assessment of Male Patients Using Standardized Bone Density Values and a National Reference Database

2007 ◽  
Vol 10 (1) ◽  
pp. 25-33 ◽  
Author(s):  
Stefan Goemaere ◽  
Dirk Vanderschueren ◽  
Jean-Marc Kaufman ◽  
Jean-Yves Reginster ◽  
Yves Boutsen ◽  
...  
Keyword(s):  
Bone Density ◽  
Dual Energy ◽  
Reference Database ◽  
X Ray ◽  
National Reference ◽  
Density Values ◽  
Male Patients

Effect of Positioning of the Region of Interest on Bone Density of the Hip

2020 ◽  
Vol 23 (3) ◽  
pp. 426-431
Author(s):  
Avery Feit ◽  
Natan Levin ◽  
Elizabeth A. McNamara ◽  
Partha Sinha ◽  
LaTarsha G. Whittaker ◽  
...  
Keyword(s):  
Bone Density ◽  
Region Of Interest

Discrepancies between vertebral bone density values: The least dense vertebra

Maturitas ◽  
2006 ◽  
Vol 53 (4) ◽  
pp. 476-482 ◽  
Author(s):  
A. Mylonakis ◽  
D. Hadjidakis ◽  
P. Katsavochristos ◽  
I.I. Androulakis ◽  
M. Sfakianakis ◽  
...  
Keyword(s):  
Bone Density ◽  
Vertebral Bone ◽  
Density Values

scholarly journals Midpalatal Suture Density Evaluation after Rapid and Slow Maxillary Expansion with a Low-Dose CT Protocol: A Retrospective Study

Medicina ◽  
2020 ◽  
Vol 56 (3) ◽  
pp. 112 ◽  
Author(s):  
Rosamaria Fastuca ◽  
Ambra Michelotti ◽  
Riccardo Nucera ◽  
Vincenzo D’Antò ◽  
Angela Militi ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Low Dose ◽  
Similar Rate ◽  
Rapid Maxillary Expansion ◽  
Regions Of Interest ◽  
Maxillary Expansion ◽  
Midpalatal Suture ◽  
Ct Protocol ◽  
Density Evaluation ◽  
Low Dose Computed Tomography

Background and objectives: The aim of the present paper is to use low-dose computed tomography (CT) to evaluate the changes in the midpalatal suture density in patients treated with rapid maxillary expansion (RME) and slow maxillary expansion (SME). Materials and Methods: Thirty patients (mean age 10.2 ± 1.2 years) were retrospectively selected from the existing sample of a previous study. For each patient, a low-dose computed tomography examination was performed before appliance placement (T0) and at the end of retention (T1), seven months later. Using the collected images, the midpalatal suture density was evaluated in six regions of interest. Results: No significant differences were found between the timepoints in the rapid maxillary expansion group. Three out of six regions of interest showed significant decreases between the timepoints in the slow maxillary expansion group. No significant differences were found in comparisons between the two groups. Conclusions: The midpalatal suture density showed no significant differences when rapid maxillary expansion groups were compared to slow maxillary expansion groups, suggesting that a similar rate of suture reorganization occurs despite different expansion protocols.

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