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https://www.readbyqxmd.com/read/27921170/effect-of-photon-initiated-photoacoustic-streaming-passive-ultrasonic-and-sonic-irrigation-techniques-on-dentinal-tubule-penetration-of-irrigation-solution-a-confocal-microscopic-study
#1
Merve Akcay, Hakan Arslan, Merve Mese, Nazlı Durmus, Ismail Davut Capar
OBJECTIVES: The aim of this in vitro study was to evaluate the efficacy of different irrigation techniques including laser-activated irrigation using an erbium:yttrium-aluminum-garnet (Er:YAG) laser with a novel tip design (photon-induced photoacoustic streaming (PIPS)), Er:YAG laser with Preciso tip, sonic activation, and passive ultrasonic activation on the final irrigation solution penetration into dentinal tubules by using a laser scanning confocal microscope. MATERIAL AND METHODS: In this study, 65 extracted single-rooted human mandibular premolars were instrumented up to size 40 and randomly divided into 5 groups (n = 13) based on the activation technique of the final irrigation solution as follows: conventional irrigation (control group), sonic activation, passive ultrasonic activation, Er:YAG-PIPS tip activation, and Er:YAG-Preciso tip activation...
December 5, 2016: Clinical Oral Investigations
https://www.readbyqxmd.com/read/27920333/accuracy-and-reproducibility-using-patient-specific-instrumentation-in-total-ankle-arthroplasty
#2
Justin Daigre, Gregory Berlet, Bryan Van Dyke, Kyle S Peterson, Robert Santrock
BACKGROUND: Implant survivorship is dependent on accuracy of implantation and successful soft tissue balancing. System instrumentation for total ankle arthroplasty implantation has a key influence on surgeon accuracy and reproducibility. The purpose of this study was to determine the accuracy and reproducibility of implant position with patient-specific guides for total ankle arthroplasty across multiple surgeons at multiple facilities. METHODS: This retrospective, multicenter study included 44 patients who received a total ankle implant (INBONE II Total Ankle System; Wright Medical Technology, Memphis, TN) using PROPHECY patient-specific guides from January 2012 to December 2014...
December 5, 2016: Foot & Ankle International
https://www.readbyqxmd.com/read/27916706/the-influence-of-test-positions-on-clinical-assessment-for-scapular-dyskinesis
#3
Simin Deng, Kang Chen, Yanhong Ma, Juan Chen, Mi Huang
BACKGROUND: Appropriate evaluation of scapular dyskinesis is essential for therapy strategies. Although the current visual-based assessment is rapid and practical, the reliability of this method is unsatisfactory. It is necessary to adequately understand the conditions of assessment to maximize the benefit of therapeutic interventions. OBJECTIVE: To explore the influence of different test positions on clinical assessment for scapular dyskinesis. DESIGN: Observational study...
December 1, 2016: PM & R: the Journal of Injury, Function, and Rehabilitation
https://www.readbyqxmd.com/read/27896625/mri-characterization-in-the-acute-phase-of-experimental-subarachnoid-hemorrhage
#4
Dewei Guo, D Andrew Wilkinson, B Gregory Thompson, Aditya S Pandey, Richard F Keep, Guohua Xi, Ya Hua
A number of mechanisms have been proposed for the early brain injury after subarachnoid hemorrhage (SAH). In this study, we investigated the radiographic characteristics and influence of gender on early brain injury after experimental SAH. SAH was induced by endovascular perforation in male and female rats. Magnetic resonance imaging was performed in a 7.0-T Varian MR scanner at 24 h after SAH. The occurrence and size of T2 lesions, ventricular dilation, and white matter injury (WMI) were determined on T2-weighted images (T2WI)...
November 28, 2016: Translational Stroke Research
https://www.readbyqxmd.com/read/27896394/the-orientation-of-the-surgical-epicondylar-axis-varies-in-varus-and-non-varus-knees-in-the-coronal-plane
#5
Yunjie Zhang, Xiaofeng Wang, Yunchao Shao, Qing Xia
PURPOSE: To investigate the orientations of the surgical epicondylar axis (SEA) of varus and non-varus knees in the coronal plane. METHODS: One-hundred and sixty-two knees from 81 Chinese patients undergoing total knee arthroplasty (TKA) were retrospectively investigated. The angle between the medial side of the femoral mechanical axis and the SEA (MA-SEA), as well as the physiological valgus angle, was measured in the coronal plane using three-dimensional reconstruction...
November 28, 2016: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/27887713/magnetic-resonance-imaging-correlation-to-intraoperative-findings%C3%A2-of-deeply-infiltrative-endometriosis
#6
Traci E Ito, Elias D Abi Khalil, Myles Taffel, Gaby N Moawad
OBJECTIVE: To show characteristics of deeply infiltrative endometriosis (DIE) on magnetic resonance imaging (MRI) and how they correlate with intraoperative findings. DESIGN: Overview of still and dynamic MRI images of four different patients with DIE. We then used videos from their surgeries to highlight the appearance of endometriosis corresponding to these images (educational video). SETTING: University hospital. PATIENT(S): Four different patients with DIE were included in this video...
November 22, 2016: Fertility and Sterility
https://www.readbyqxmd.com/read/27886002/three-dimensional-vs-two-dimensional-shear-wave-elastography-of-the-testes-preliminary-study-on-a-healthy-collective
#7
J Marcon, M Trottmann, J Rübenthaler, M D'Anastasi, C G Stief, M F Reiser, D A Clevert
INTRODUCTION: Shear wave elastography (SWE) and its derivative Supersonic Shear Imaging (SSI) are newer techniques for the determination of tissue elasticity by measuring the velocity of generated shear waves (SWV), which correlates positively with tissue stiffness.The techniques are integrated into many modern ultrasound systems and have been examined in the evaluation of viscoelastic properties of different organ systems. Two-dimensional shear wave elastography (2D SWE) of the testes has been found to be a useful tool in recent studies which included the determination of standard values in healthy volunteers...
November 23, 2016: Clinical Hemorheology and Microcirculation
https://www.readbyqxmd.com/read/27883175/heads-you-win-tails-you-lose-filtration-processing-for-the-microscopical-examination-of-sperm-heads
#8
I A Brewis, M A Watkinson, C J VON Ruhland
The sperm head plays a key role in many fertilisation events and determining the precise location of molecules within the head region is important in mechanistically dissecting the fertilisation process. Such molecules may be present in low copy number and many sperm head profiles must be examined to localise them to particular subcellular structures with confidence. Filtration has traditionally been used for the purpose of concentrating biological material, such as free-living cells, spores, and subcellular fractions, and little attempt has been made to extend the procedure to encompass the entire processing schedule, mainly due to the incompatibility of intermediate dehydrating solvents with membrane filters...
November 24, 2016: Journal of Microscopy
https://www.readbyqxmd.com/read/27882612/the-relationship-between-geometry-of-the-extensor-mechanism-of-the-knee-and-risk-of-anterior-cruciate-ligament-injury
#9
Josh C Carter, Daniel R Sturnick, Pamela M Vacek, Michael J DeSarno, Erin C Argentieri, James R Slauterbeck, Robert J Johnson, Bruce D Beynnon
The complex inter-segmental forces that are developed across an extended knee by body weight and contraction of the quadriceps muscle group transmits an anteriorly-directed force on the tibia that strain the anterior cruciate ligament (ACL). We hypothesized that a relationship exists between geometry of the knees extensor mechanism and the risk of sustaining a non-contact ACL injury. Geometry of the extensor mechanism was characterized using MRI scans of the knees of 88 subjects that suffered their first non-contact ACL injury and 88 matched control subjects with normal knees that were on the same team...
November 24, 2016: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/27877006/early-prediction-of-pathological-outcomes-to-neoadjuvant-chemotherapy-in-breast-cancer-patients-using-automated-breast-ultrasound
#10
Xinguang Wang, Ling Huo, Yingjian He, Zhaoqing Fan, Tianfeng Wang, Yuntao Xie, Jinfeng Li, Tao Ouyang
OBJECTIVE: Early assessment of response to neoadjuvant chemotherapy (NAC) for breast cancer allows therapy to be individualized. The optimal assessment method has not been established. We investigated the accuracy of automated breast ultrasound (ABUS) to predict pathological outcomes after NAC. METHODS: A total of 290 breast cancer patients were eligible for this study. Tumor response after 2 cycles of chemotherapy was assessed using the product change of two largest perpendicular diameters (PC) or the longest diameter change (LDC)...
October 2016: Chinese Journal of Cancer Research, Chung-kuo Yen Cheng Yen Chiu
https://www.readbyqxmd.com/read/27873018/soft-tissue-augmentation-around-osseointegrated-and-uncovered-dental-implants-a-systematic-review
#11
REVIEW
Renzo G Bassetti, Alexandra Stähli, Mario A Bassetti, Anton Sculean
OBJECTIVES: The aim was to compile the current knowledge about the efficacy of different soft tissue correction methods around osseointegrated, already uncovered and/or loaded (OU/L) implants with insufficient soft tissue conditions. Procedures to increase peri-implant keratinized mucosa (KM) width and/or soft tissue volume were considered. MATERIALS AND METHODS: Screening of two databases: MEDLINE (PubMed) and EMBASE (OVID), and manual search of articles were performed...
November 21, 2016: Clinical Oral Investigations
https://www.readbyqxmd.com/read/27871483/vertical-load-induced-with-twisted-file-adaptive-system-during-canal-shaping
#12
Ahmed Jamleh, Khalid Alfouzan
INTRODUCTION: To evaluate the vertical load induced with the Twisted File Adaptive (TFA; SybronEndo, Orange, CA) system during canal shaping of extracted teeth by comparing it with the Twisted File (TF, SybronEndo), ProTaper Next (PTN; Dentsply Maillefer, Ballaigues, Switzerland), and ProTaper Universal (PTU, Dentsply Maillefer) systems. METHODS: Fifty-two root canals were shaped using the TFA, TF, PTN, or PTU systems (n = 13 for each system). They were shaped gently according to the manufacturers' instructions...
December 2016: Journal of Endodontics
https://www.readbyqxmd.com/read/27863694/titanium-posts-and-bonded-amalgam-core-longevity-a-22-year-clinical-survival-retrospective-study
#13
Martín Caserío Valea, Victor Alonso de la Peña
BACKGROUND: The authors conducted a retrospective study to evaluate the long-term (18-22 years) clinic results of titanium post and bonded amalgam core restorations with metal-ceramic crowns placed in patients. METHODS: From 1992 through 1996, the authors placed 88 restorations in 66 patients. They measured the ferrule effect in the minor dentin collar area. In 2014, the authors analyzed the following variables: ferrule length, length and thickness of the post, and tooth position...
November 15, 2016: Journal of the American Dental Association
https://www.readbyqxmd.com/read/27858979/spatial-variation-in-mandibular-bone-elastic-modulus-and-its-effect-on-structural-bending-stiffness-a-test-case-using-the-ta%C3%A3-forest-monkeys
#14
Kim N Le, Matthew Marsik, David J Daegling, Ana Duque, William Scott McGraw
OBJECTIVES: We investigated how heterogeneity in material stiffness affects structural stiffness in the cercopithecid mandibular cortical bone. We assessed (1) whether this effect changes the interpretation of interspecific structural stiffness variation across four primate species, (2) whether the heterogeneity is random, and (3) whether heterogeneity mitigates bending stress in the jaw associated with food processing. MATERIALS AND METHODS: The sample consisted of Taï Forest, Cote d'Ivoire, monkeys: Cercocebus atys, Piliocolobus badius, Colobus polykomos, and Cercopithecus diana...
November 18, 2016: American Journal of Physical Anthropology
https://www.readbyqxmd.com/read/27844117/are-advanced-three-dimensional-imaging-studies-always-needed-to-measure-the-coronal-knee-alignment-of-the-lower-extremity
#15
Jean Yves Lazennec, Quentin Chometon, Dominique Folinais, Christopher B Robbins, Aidin Eslam Pour
BACKGROUND: Coronal malalignment of the lower extremity is closely related to the onset and progression of osteoarthritis. Restoring satisfactory alignment after tibial osteotomy improves the long-term success of this conservative surgery. The purpose of our study was to determine (1) if there is a difference between two-dimensional (2D) and 3D measurements of the hip-knee-ankle (HKA) angle between the mechanical axes of the femur and the tibia, (2) which parameter most affects 2D-3D HKA measurement, and (3) the percentage of patients who are at risk of error in HKA measurement...
November 14, 2016: International Orthopaedics
https://www.readbyqxmd.com/read/27829749/management-of-gingival-recession-with-acellular-dermal-matrix-graft-a-clinical-study
#16
V R Balaji, T Ramakrishnan, D Manikandan, R Lambodharan, B Karthikeyan, Thanvir Mohammed Niazi, G Ulaganathan
AIMS AND OBJECTIVES: Obtaining root coverage has become an important part of periodontal therapy. The aims of this studyare to evaluate the clinical efficacy of acellular dermal matrix graft in the coverage of denuded roots and also to examine the change in the width of keratinized gingiva. MATERIALS AND METHODS: A total of 20 sites with more than or equal to 2 mm of recession depth were taken into the study, for treatment with acellular dermal matrix graft. The clinical parameters such as recession depth, recession width, width of keratinized gingiva, probing pocket depth (PD), and clinical attachment level (CAL) were measured at the baseline, 8(th) week, and at the end of the study (16(th) week)...
October 2016: Journal of Pharmacy & Bioallied Sciences
https://www.readbyqxmd.com/read/27829745/a-comparison-of-the-sealing-ability-of-various-temporary-restorative-materials-to-seal-the-access-cavity-an-in-vitro-study
#17
Aji Markose, Ramesh Krishnan, Maya Ramesh, Shishir Singh
INTRODUCTION: In multiple-appointment root canal treatment, a temporary filling material is used to seal the access cavity between visits. The primary function of this material is to prevent the contamination of the root canal system by fluids, organic debris, and bacteria from the oral cavity. MATERIAL AND METHODS: A total of fifty extracted noncarious unrestored human maxillaryanterior teeth with intact crowns and roots were selected The canals were instrumented using stepback technique and sodium hypochlorite (3%) and hydrogen peroxide (3%) were used as irrigants for each specimen alternatively...
October 2016: Journal of Pharmacy & Bioallied Sciences
https://www.readbyqxmd.com/read/27826701/a-cadaver-study-validating-ct-assessment-of-acetabular-component-orientation-the-perth-ct-hip-protocol
#18
Varun Arora, Richard Hannan, Richard Beaver, Timothy Fletcher, Paul Harvie
OBJECTIVE: The aim was to develop a CT-based protocol to accurately measure post-operative acetabular cup inclination and anteversion establishing which bony reference points facilitate the most accurate estimation of these variables. MATERIALS AND METHODS: An all-polyethylene acetabular liner was implanted into a cadaveric acetabulum. A conventional pelvic CT scan was performed and reformatted images created in both functional and anterior pelvic planes. CT images were transferred to a Freedom-Plus Graphics software package enabling an identical, virtual 3D model of the cadaveric pelvis to be created and definitive acetabular cup orientation established...
November 8, 2016: Skeletal Radiology
https://www.readbyqxmd.com/read/27825939/location-of-the-ankle-center-for-total-knee-arthroplasty
#19
Shigeki Asada, Shigeshi Mori, Shinji Inoue, Ichiroh Tsukamoto, Masao Akagi
BACKGROUND: The purpose of this study was to investigate the ankle center position as determined from the malleoli for total knee arthroplasty (TKA). METHODS: We retrospectively analyzed computed tomography data from 102 patients with osteoarthritic knees. The tibial anteroposterior (AP) axis and transmalleolar axis (TMA) were used as rotational reference axes of the knee and ankle joint, respectively. With these axes, we regarded the offset distance from the intermalleolar midpoint as the position of the ankle center and investigated any angular osteotomy errors on the proximal tibia when the ankle center was assumed to the intermalleolar midpoint...
November 5, 2016: Knee
https://www.readbyqxmd.com/read/27818568/redox-status-of-%C3%AE-2gpi-in-different-stages-of-diabetic-angiopathy
#20
Jun Ma, Jing-Yun Zhang, Yan Liu, De-Min Yu, Pei Yu
We explored the redox status of beta 2 glycoprotein I (β2GPI) in different stages of diabetic angiopathy. Type 2 diabetes mellitus (T2DM) had a significantly lower proportion of reduced β2GPI as compared to healthy controls (p < 0.05). There was a trend that the mild coronal atherosclerosis heart disease (CAD) had higher proportion of reduced β2GPI than non-CAD and severe-CAD groups, however without significances (p > 0.05). The mild-A-stenosis group and mild-diabetic retinopathy (DR) groups had higher proportion of reduced β2GPI than their severely affected counterparts...
2016: Disease Markers
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