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Palatal en-masse retraction of segmented maxillary anterior teeth: A finite element study

Park JH, Kook YA, Kojima Y, Yun S, Chae JM

OBJECTIVE: The aim of this finite element study was to clarify the mechanics of tooth movement in palatal en-masse retraction of segmented maxillary anterior teeth by using anchor screws and...
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Is Hyperabduction Arm Position in Early Cocking Phase Really Dangerous for Baseball Pitchers?

Lee JH, Oh BH, Park JY, Lee BK, Yoo TH, Cha HJ

PURPOSE: Certain pitching mechanics is thought to lead pitchers in danger of surgical risk and decrease performance. The objective of this study is to analyze the effect of shoulder hyperabduction...
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Effect of archwire stiffness and friction on maxillary posterior segment displacement during anterior segment retraction: A three-dimensional finite element analysis

Park CS, Yu HS, Cha JY, Mo SS, Lee KJ

OBJECTIVE: Sliding mechanics using orthodontic miniscrews is widely used to stabilize the anchorage during extraction space closure. However, previous studies have reported that both posterior segment displacement and anterior segment...
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Comparison of Biomechanical Properties of Dura Mater Substitutes and Cranial Human Dura Mater : An In Vitro Study

Kizmazoglu C, Aydin HE, Kaya I, Atar M, Husemoglu , Kalemci O, Sozer G, Havitcioglu H

OBJECTIVE: The aim of this study was to investigate the biomechanical differences between human dura mater and dura mater substitutes to optimize biomimetic materials. METHODS: Four groups were investigated. Group I...
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Computational analysis of the electromechanical performance of mitral valve cerclage annuloplasty using a patient-specific ventricular model

Lee KE, Kim KT, Lee JH, Jung S, Kim JH, Shim EB

We aimed to propose a novel computational approach to predict the electromechanical performance of pre- and post-mitral valve cerclage annuloplasty (MVCA). Furthermore, we tested a virtual estimation method to optimize...
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Sequential Changes in Left Ventricular Systolic Myocardial Deformation Mechanics in Children with Recurrent Kawasaki Disease

Kang SJ, Jin BK, Hwang SJ, Kim HJ

BACKGROUND: Sequential changes in left ventricular (LV) systolic function over time in patients with recurrent episodes of Kawasaki disease (KD) remain unclear. METHODS: Twenty-five children with recurrent KD were retrospectively studied....
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Cranial cruciate ligament structure in relation to the tibial plateau slope and intercondylar notch width in dogs

Kyllar M, Čížek P

Cranial cruciate ligament (CCL) rupture is one of the most common orthopedic conditions in dogs. The pathogenesis of CCL rupture is not fully described and remains to be elucidated fully....
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Respiratory Responses during Exercise in Self-contained Breathing Apparatus among Firefighters and Nonfirefighters

Hostler D, Pendergast DR

BACKGROUND: Firefighters are required to use self-contained breathing apparatus (SCBA), which impairs ventilatory mechanics. We hypothesized that firefighters have elevated arterial COâ‚‚ when using SCBA. METHODS: Firefighters and controls performed a...
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Right Atrial Deformation Mechanics in Children with Adenotonsillar Hypertrophy

Kang SJ, Kwon YW

BACKGROUND: Children with significant adenotonsillar hypertrophy (ATH) may show right ventricular (RV) dysfunction. We aimed to evaluate RV dysfunction in such children before adenotonsillectomy by evaluating peak longitudinal right atrial...
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Prediction of optimal bending angles of a running loop to achieve bodily protraction of a molar using the finite element method

Ryu WK, Park JH, Tai K, Kojima Y, Lee Y, Chae JM

OBJECTIVE: The purpose of this study was to predict the optimal bending angles of a running loop for bodily protraction of the mandibular first molars and to clarify the mechanics...
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Cause of Metatarsalgia

Gwak HC, Ha DJ

Metatarsalgia is one of the most common causes of patients complaining of pain in their feet. This pain is the plantar forefoot, including the second to fourth metatarsal heads and...
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Primary blast waves induced brain dynamics influenced by head orientations

Hua Y, Wang Y, Gu L

There is controversy regarding the directional dependence of head responses subjected to blast loading. The goal of this work is to characterize the role of head orientation in the mechanics...
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Golf-related Spine and Lower Extremity Injury

Lee YS, Lee SH

Golf is a popular worldwide sport played regardless of skill level, age, and sex. This characteristic is a major part of appeal. However, the golf swing involves a large range...
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Effects of bracket slot size during en-masse retraction of the six maxillary anterior teeth using an induction-heating typodont simulation system

Kim JY, Yu WJ, Koteswaracc PNK, Kyung HM

OBJECTIVE: To investigate how bracket slot size affects the direction of maxillary anterior tooth movement when en-masse retraction is performed in sliding mechanics using an induction-heating typodont simulation system. METHODS: An...
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Tackling the Challenge of the Aging Society: Detecting and Preventing Cognitive and Physical Decline through Games and Consumer Technologies

Wortley D, An JY, Heshmati A

OBJECTIVES: This study seeks to review some of the approaches employed to address health and well-being issues in the elderly population. METHODS: This article reviews and analyses a range of projects...
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Differentiation Potential of Mesenchymal Stem Cells Is Related to Their Intrinsic Mechanical Properties

Han I, Kwon BS, Park HK, Kim KS

PURPOSE: The differentiation properties of stem cells are not yet fully understood due to their close association with multiple environmental and extrinsic factors. This study investigates the differentiation properties of...
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Human Body Mechanics of Pushing and Pulling: Analyzing the Factors of Task-related Strain on the Musculoskeletal System

Argubi-Wollesen A, Wollesen B, Leitner M, Mattes K

The purpose of this review is to name and describe the important factors of musculoskeletal strain originating from pushing and pulling tasks such as cart handling that are commonly found...
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What is the proper ventilation strategy during laparoscopic surgery?

Jo YY, Kwak HJ

The main stream of intraabdominal surgery has changed from laparotomy to laparoscopy, but anesthetic care for laparoscopic surgery is challenging for clinicians, because pneumoperitoneum might aggravate respiratory mechanics and arterial...
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The Value of Elastic Modulus Index as a Novel Surrogate Marker for Cardiovascular Risk Stratification by Dimensional Speckle-Tracking Carotid Ultrasonography

Yoon JH, Cho IJ, Chang HJ, Sung JM, Lee J, Ryoo H, Shim CY, Hong GR, Chung N

BACKGROUND: Carotid intima media thickness (CIMT) and the presence of carotid plaque have been used for risk stratification of cardiovascular disease (CVD). To date, however, the association between multi-directional functional...
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Posterior Shift of Contact Point between Femoral Component and Polyethylene in the LCS Rotating Platform Implant under Weight Bearing Condition

Oh WS, Lee YS, Kim BK, Sim JA, Lee BK

PURPOSE: To analyze the contact mechanics of the femoral component and polyethylene of the Low Contact Stress rotating platform (LCS-RP) in nonweight bearing and weight bearing conditions using full flexion...
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