keyword
MENU ▼
Read by QxMD icon Read
search

Mini screw

keyword
https://www.readbyqxmd.com/read/28107130/the-use-of-miniscrews-in-orthodontics-a-review-of-selected-clinical-applications
#1
Eliakim Mizrahi
This paper provides a brief review of the history and development of mini screws and presents its structural features, with particular reference to the screw sizes relevant to clinical orthodontics, site selection and the different placement techniques. It covers the clinical applications of miniscrews, incorporating the principle of direct and indirect anchorage as well as the use of intraoral auxiliaries for distal movement of molars. The role of palatal miniscrews for retraction of anterior teeth, and when used in combination with buccal miniscrews for intrusion of buccal teeth is also covered along with the possible causes of miniscrew failure...
November 1, 2016: Primary Dental Journal
https://www.readbyqxmd.com/read/28104440/twin-screw-extruded-lipid-implants-containing-trp2-peptide-for-tumour-therapy
#2
Marie-Paule Even, Sharan Bobbala, Blake Gibson, Sarah Hook, Gerhard Winter, Julia Engert
Much effort has been put in the development of specific anti-tumour immunotherapies over the last few years, and several studies report on the use of liposomal carriers for tumour-associated antigens. In this work, the use of lipid implants, prepared using two different extruders, was investigated for sustained delivery in tumour therapy. The implants consisted of cholesterol, soybean lecithin, Dynasan 114, trehalose, ovalbumin (OVA) or a TRP2 peptide, and Quil-A. Implants were first produced on a Haake Minilab extruder, and then a scale-down to minimal quantities of material on a small scale ZE mini extruder was performed...
January 16, 2017: European Journal of Pharmaceutics and Biopharmaceutics
https://www.readbyqxmd.com/read/27980339/no-confidence-that-success-rates-of-self-drilling-and-self-tapping-insertion-techniques-of-orthodontic-mini-implants-are-similar
#3
Reint Meursinge Reynders, Giorgio Cacciatore
Data sourcesMedline, Cochrane Central Register of Controlled Trials (CENTRAL), Embase, China National Knowledge Infrastructure (CNKI) and SIGLE.Study selectionRandomised controlled trials(RCTs), clinical controlled trials (CCTs) and cohort studies that assessed the success/failure rates of self-drilling and self-tapping mini-screws for orthodontic anchorage were considered.Data extraction and synthesisData was abstracted and assessed for quality by two reviewers independently. The Newcastle-Ottawa scale (NOS) was used to evaluate the methodological quality...
December 2016: Evidence-based Dentistry
https://www.readbyqxmd.com/read/27918313/a-comparison-of-the-mechanical-measures-used-for-assessing-orthodontic-mini-implant-stability
#4
Yara K Hosein, S Jeffrey Dixon, Amin S Rizkalla, Ali Tassi
PURPOSE: Mechanical loosening remains a common complication associated with mini-implant failure. The purpose of this study was to compare common mechanical measures of mini-implant stability to determine their association and reliability. MATERIALS AND METHODS: Ninety self-drilling orthodontic mini-implants from 6 manufacturers were inserted into artificial bone blocks. Insertion torques (ITs) and Periotest values (PVs) were measured. Subsequently, mini-implants underwent pull-out testing for measures of pull-out load (POL) and screw displacement (ScrD)...
December 1, 2016: Implant Dentistry
https://www.readbyqxmd.com/read/27916700/elucidation-and-visualization-of-solid-state-transformation-and-mixing-in-a-pharmaceutical-mini-hot-melt-extrusion-process-using-in-line-raman-spectroscopy
#5
Jeroen Van Renterghem, Ashish Kumar, Chris Vervaet, Jean Paul Remon, Ingmar Nopens, Yvan Vander Heyden, Thomas De Beer
Mixing of raw materials (drug+polymer) in the investigated mini pharma melt extruder is achieved by using co-rotating conical twin screws and an internal recirculation channel. In-line Raman spectroscopy was implemented in the barrels, allowing monitoring of the melt during processing. The aim of this study was twofold: to investigate (I) the influence of key process parameters (screw speed - barrel temperature) upon the product solid-state transformation during processing of a sustained release formulation in recirculation mode; (II) the influence of process parameters (screw speed - barrel temperature - recirculation time) upon mixing of a crystalline drug (tracer) in an amorphous polymer carrier by means of residence time distribution (RTD) measurements...
December 1, 2016: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/27902591/a-novel-indication-for-a-method-in-the-treatment-of-lumbar-tuberculosis-through-minimally-invasive-extreme-lateral-interbody-fusion-xlif-in-combination-with-percutaneous-pedicle-screws-fixation-in-an-elderly-patient-a-case-report
#6
Qiyou Wang, Yichun Xu, Ruiqiang Chen, Jianwen Dong, Bin Liu, Limin Rong
RATIONALE: To describe a novel indication for a method through minimally invasive extreme lateral interbody fusion (XLIF) in combination with percutaneous pedicle screwsfixation in the treatment of lumbar tuberculosis (TB) in an elderly patient, and its clinical efficacy and feasibility. Lumbar TB is a destructive form of TB. Antituberculous treatment should be started as early as possible. In some circumstances, however, surgical debridement with or without stabilization of the spine appears to be beneficial and may be recommended...
November 2016: Medicine (Baltimore)
https://www.readbyqxmd.com/read/27891469/comparison-of-anchorage-pattern-under-two-types-of-orthodontic-mini-implant-loading-during-retraction-in-type-a-anchorage-cases
#7
B Imran Khan, Gowri Sankar Singaraju, Prasad Mandava, G Vivek Reddy, Venkatesh Nettam, Venkat Naidu Bhavikati
INTRODUCTION: The orthodontic mini-screws are the mainstay of direct skeletal anchorage which requires minimal compliance and provides maximal anchorage control. However, the timing of initiation of orthodontic loading of these mini-screws is not clearly established in the available studies. AIM: The purpose of this study was to determine the reciprocal effects on mini-screw implant with immediate loading in comparison to that of delayed loading during retraction...
October 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/27870692/wide-variation-of-surgical-cost-in-the-treatment-of-periarticular-lower-extremity-injuries-between-6-fellowship-trained-trauma-surgeons
#8
Robert J Wetzel, Laurence B Kempton, Edwin S Lee, Michael Zlowodzki, Todd O McKinley, Walter W Virkus
OBJECTIVES: We hypothesized that negligible surgical material cost variation exists between traumatolgists for treatment of bimalleolar ankle and bicondylar tibial plateau fractures. DESIGN: Retrospective medical record review. SETTING: Academic level 1 Trauma Center; 2-year period. PATIENTS/PARTICIPANTS: Current Procedure Terminology codes for open treatment of bimalleolar ankle and bicondylar tibial plateau fractures identified patients...
December 2016: Journal of Orthopaedic Trauma
https://www.readbyqxmd.com/read/27776320/assessment-of-mechanical-behavior-of-pla-composites-reinforced-with-mg-micro-particles-through-depth-sensing-indentations-analysis
#9
S C Cifuentes, E Frutos, R Benavente, V Lorenzo, J L González-Carrasco
This work deals with the mechanical characterization by depth-sensing indentation (DSI) of PLLA and PLDA composites reinforced with micro-particles of Mg (up to 15wt%), which is a challenging task since the indented volume must provide information of the bulk composite, i.e. contain enough reinforcement particles. The composites were fabricated by combining hot extrusion and compression moulding. Physico-chemical characterization by TGA and DSC indicates that Mg anticipates the thermal degradation of the polymers but does not compromise their stability during processing...
January 2017: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/27707564/a-systematic-review-and-meta-analysis-examining-the%C3%A2-differences-between-nonsurgical-management-and%C3%A2-percutaneous-fixation-of-minimally-and-nondisplaced-scaphoid-fractures
#10
Hassan Alnaeem, Salah Aldekhayel, Johnathan Kanevsky, Omar Fouda Neel
PURPOSE: The optimal management of undisplaced scaphoid fractures remains controversial. A systematic review was conducted to assess the outcomes of acute, undisplaced scaphoid fractures managed with cast immobilization versus percutaneous or miniopen screw fixation in terms of time to return to work (RTW), time to union, and morbidity. METHODS: PubMed MEDLINE, Ovid MEDLINE, EMBASE, SCOPUS, and Cochrane electronic databases were searched over the period 1974 to 2015...
December 2016: Journal of Hand Surgery
https://www.readbyqxmd.com/read/27687637/hot-melt-extrusion-as-a-continuous-manufacturing-process-to-form-ternary-cyclodextrin-inclusion-complexes
#11
Justine Thiry, Fabrice Krier, Shenelka Ratwatte, Jean-Michel Thomassin, Christine Jerome, Brigitte Evrard
The aim of this study was to evaluate hot-melt extrusion (HME) as a continuous process to form cyclodextrin (CD) inclusion complexes in order to increase the solubility and dissolution rate of itraconazole (ITZ), a class II model drug molecule of the Biopharmaceutics Classification System. Different CD derivatives were tested in a 1:1 (CD:ITZ) molar ratio to obtain CD ternary inclusion complexes in the presence of a polymer, namely Soluplus(®) (SOL). The CD used in this series of experiments were β-cyclodextrin (βCD), hydroxypropyl-β-cyclodextrin (HPβCD) with degrees of substitution of 0...
January 1, 2017: European Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/27686641/-clinical-effect-of-compound-internal-fixations-in-treating-extreme-distal-radial-fractures
#12
J Fan, B Jiang, F Yuan, S Z Li, J Q Zhou, J Mei, L M Cheng, G R Yu
Objective: To investigate the clinical character and treating strategy of extreme distal radial fractures. Methods: From June 2012 to May 2014, 12 patients who suffered from extreme distal radial fractures were treated in Department of Orthopedics, Tongji Hospital, Tongji University. According to AO/OTA classification, there were 4 cases of type 23B1, 3 cases of 23B2, 3 cases of 23C1 and 2 cases of 23C3.When classified by morphological features, there were 4 of simple styloid process fracture, 3 of simple extreme distal radial fracture without articular surface involved, 3 of styloid process fracture combined with distal radial articular fracture, and 2 of articular surface splintered or collapse fracture...
October 1, 2016: Zhonghua Wai Ke za Zhi [Chinese Journal of Surgery]
https://www.readbyqxmd.com/read/27686052/a-comparative-study-between-melt-granulation-compression-and-hot-melt-extrusion-injection-molding-for-the-manufacturing-of-oral-sustained-release-thermoplastic-polyurethane-matrices
#13
G Verstraete, P Mertens, W Grymonpré, P J Van Bockstal, T De Beer, M N Boone, L Van Hoorebeke, J P Remon, C Vervaet
During this project 3 techniques (twin screw melt granulation/compression (TSMG), hot melt extrusion (HME) and injection molding (IM)) were evaluated for the manufacturing of thermoplastic polyurethane (TPU)-based oral sustained release matrices, containing a high dose of the highly soluble metformin hydrochloride. Whereas formulations with a drug load between 0 and 70% (w/w) could be processed via HME/(IM), the drug content of granules prepared via melt granulation could only be varied between 85 and 90% (w/w) as these formulations contained the proper concentration of binder (i...
November 20, 2016: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/27671282/optimal-area-of-lateral-mass-mini-screws-implanted-in-plated-cervical-laminoplasty-a-radiography-anatomy-study
#14
Hua Chen, Huibo Li, Yuxiao Deng, Xin Rong, Quan Gong, Tao Li, Yueming Song, Hao Liu
PURPOSE: Lateral mass mini-screws used in plated cervical laminoplasty might penetrate into facet joints. The objective is to observe this complication incidence and to identify the optimal areas for 5- and 7-mm-long mini-screws to implant on lateral mass. METHODS: 47 patients who underwent plated cervical laminoplasty were included. The optimal area for mini-screws implanting was set according to pre-operative 3D CT reconstruction data. Then, each posterior-lateral mass surface was divided into three regions: 7-mm region, 5-mm region, and dangerous area...
September 26, 2016: European Spine Journal
https://www.readbyqxmd.com/read/27667816/maxillary-anterior-en-masse-retraction-using-different-antero-posterior-position-of-mini-screw-a-3d-finite-element-study
#15
Zohreh Hedayati, Mehrdad Shomali
BACKGROUND: Nowadays, mini screws are used in orthodontic tooth movement to obtain maximum or absolute anchorage. They have gained popularity among orthodontists for en masse retraction of anterior teeth after first premolar extraction in maximum anchorage cases. The purpose of this study was to determine the type of anterior tooth movement during the time when force was applied from different mini screw placements to the anterior power arm with various heights. METHODS: A finite element method was used for modeling maxillary teeth and bone structure...
December 2016: Progress in Orthodontics
https://www.readbyqxmd.com/read/27666497/marginal-fit-and-photoelastic-stress-analysis-of-cad-cam-and-overcast-3-unit-implant-supported-frameworks
#16
Anna Gabriella Camacho Presotto, Cláudia Lopes Brilhante Bhering, Marcelo Ferraz Mesquita, Valentim Adelino Ricardo Barão
STATEMENT OF PROBLEM: Several studies have shown the superiority of computer-assisted design and computer-assisted manufacturing (CAD-CAM) technology compared with conventional casting. However, an advanced technology exists for casting procedures (the overcasting technique), which may serve as an acceptable and affordable alternative to CAD-CAM technology for fabricating 3-unit implant-supported fixed dental prostheses (FDPs). PURPOSE: The purpose of this in vitro study was to evaluate, using quantitative photoelastic analysis, the effect of the prosthetic framework fabrication method (CAD-CAM and overcasting) on the marginal fit and stress transmitted to implants...
September 22, 2016: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/27651327/statistical-analysis-of-industrial-scale-roller-compactor-freund-tf-mini-model
#17
M Sajjia, Ahmad B Albadarin, Gavin Walker
The aim of this study is to perform a statistical analysis on a pharmaceutical roller compaction process using an industrial-scale roller compactor "Freund TF-MINI model". The process was modelled using response surface methodology (RSM) to better understand and control the process in order to produce ribbons and granules with optimised quality. The significant process parameters were determined to be (i) the screw speed to roll speed ratio and (ii) the roll pressure. The roll speed was kept constant and the roll gap was uncontrolled...
November 20, 2016: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/27632262/mini-implant-screws-for-bone-borne-anchorage-a-biomechanical-in-vitro-study-comparing-three-diameters
#18
Angélica Castro Pimentel, Marcello Roberto Manzi, Alex Juliano Prado Barbosa, Flávio Augusto Cotrim-Ferreira, Paulo Eduardo Guedes Carvalho, Gleison Fábio de Lima, Maria Cristina Zindel Deboni
PURPOSE: To evaluate the maximum strength and the maximum aperture supported by mini-implant screws of three different diameters in an in vitro rapid maxillary expander model. MATERIALS AND METHODS: Fifteen appliances were mounted in artificial bone polyurethane blocks. In each appliance, a Hyrax expander anchored by four mini-implant screw sets of three different diameters were divided into: group 1 (n = 5), 1.8-mm-diameter screws; group 2 (n = 5), 2.0-mm-diameter screws; and group 3 (n = 5), 2...
September 2016: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/27625535/treatment-of-rolando-fractures-by-open-reduction-and-internal-fixation-using-mini-t-plate-and-screws
#19
Mohammad Umar Mumtaz, Fiaz Ahmad, Altaf Ahmad Kawoosa, Imtiyaz Hussain, Iftikhar Wani
INTRODUCTION: Rolando fractures being intra-articular fractures of the most mobile joint of the thumb, assume significance because any residual incongruity of the articular surface may result in loss of motion as well as secondary osteoarthritis and hence serious disability. This fracture continues to pose difficulties to the treating surgeons and although several treatment options have been described for these fractures, there are no definite guidelines. METHODS: The present study describes the results of open reduction and internal fixation of nine Rolando fractures with large and single fragments, using mini T-plate and screws...
August 2016: Journal of Hand and Microsurgery
https://www.readbyqxmd.com/read/27617665/a-prospective-comparative-study-of-arthroscopic-versus-mini-open-latarjet-procedure-with-a-minimum-2-year-follow-up
#20
Blandine Marion, Shahnaz Klouche, Julien Deranlot, Thomas Bauer, Geoffroy Nourissat, Philippe Hardy
PURPOSE: To compare postoperative pain during the first postoperative week and the position of the coracoid bone block at the anterior aspect of the glenoid after the arthroscopic and the mini-open Latarjet procedure. The secondary purpose was to assess functional results and recurrence after at least 2 years of follow-up. METHODS: This comparative prospective study included patients who underwent a Latarjet-Bristow procedure for anterior shoulder instability in 2012...
September 8, 2016: Arthroscopy: the Journal of Arthroscopic & related Surgery
keyword
keyword
115517
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"