keyword
MENU ▼
Read by QxMD icon Read
search

Mini screw

keyword
https://www.readbyqxmd.com/read/29791686/extruded-upper-first-molar-intrusion-comparison-between-unilateral-and-bilateral-miniscrew-anchorage
#1
Mari Miura Sugii, Bruno de Castro Ferreira Barreto, Waldemir Francisco Vieira-Júnior, Katia Regina Izola Simone, Ataís Bacchi, Ricardo Armini Caldas
OBJECTIVE: The aim of his study was to evaluate the stress on tooth and alveolar bone caused by orthodontic intrusion forces in a supraerupted upper molar, by using a three-dimensional Finite Element Method (FEM). METHODS: A superior maxillary segment was modeled in the software SolidWorks 2010 (SolidWorks Corporation, Waltham, MA, USA) containing: cortical and cancellous bone, supraerupted first molar, periodontal tissue and orthodontic components. A finite element model has simulated intrusion forces of 4N onto a tooth, directed to different mini-screw locations...
January 2018: Dental Press Journal of Orthodontics
https://www.readbyqxmd.com/read/29791684/stability-of-the-anterior-arm-of-three-different-hyrax-hybrid-expanders-an-in-vitro-study
#2
Gonzalo de la Iglesia, André Walter, Fernando de la Iglesia, Heinz Winsauer, Andreu Puigdollers
INTRODUCTION: The force applied to the teeth by fixed orthopaedic expanders has previously been studied, but not the force applied to the orthodontic mini-implant (OMI) used to expand the maxilla with Hyrax hybrid expanders (HHE). OBJECTIVE: The aim of this article was to evaluate the clinical safety of the components (OMI, abutment and double wire arms) of three different force-transmitting systems (FTS) for conducting orthopaedic maxillary expansion: Jeil Medical & Tiger Dental™, Microdent™ and Ortholox™...
January 2018: Dental Press Journal of Orthodontics
https://www.readbyqxmd.com/read/29735852/evaluation-of-the-success-and-complication-rates-of-self-drilling-orthodontic-mini-implants
#3
Z Gurdan, J Szalma
Aims: Orthodontic mini-implants are important devices for successful anchorage management in orthodontics; however, the survival of these devices depends on several clinical factors. The aim of our study was to calculate the success and complication rates of orthodontic mini-implants. Materials and Methods: In this retrospective study, patients of our orthodontic department were enrolled, getting overall 59 orthodontic mini-implants during their orthodontic treatment in a 2-year period...
May 2018: Nigerian Journal of Clinical Practice
https://www.readbyqxmd.com/read/29713406/assessment-of-paraspinal-muscle-atrophy-percentage-after-minimally-invasive-transforaminal-lumbar-interbody-fusion-and-unilateral-instrumentation-using-a-novel-contralateral-intact-muscle-controlled-model
#4
Luis Alberto Ortega-Porcayo, Andres Leal-López, Miroslava Elizabeth Soriano-López, Carlos Francisco Gutiérrez-Partida, Luis Rodolfo Ramírez-Barrios, Sergio Soriano-Solis, Manuel Rodríguez-García, Hector Antonio Soriano-Solis, José Antonio Soriano-Sánchez
Study Design: Retrospective comparative clinical study. Purpose: This study aimed to assess paraspinal muscle atrophy in patients who underwent minimally invasive transforaminal lumbar interbody fusion (MI-TLIF) and unilateral pedicle screw fixation using a novel contralateral intact muscle-controlled model. Overview of Literature: The increased incidence of paravertebral lumbar muscle injuries after open techniques has raised the importance of implementing minimally invasive spine surgical techniques using tubular retractors and minimally invasive screw placement...
April 2018: Asian Spine Journal
https://www.readbyqxmd.com/read/29709352/radial-head-fracture-fixation-using-tripod-technique-with-headless-compression-screws
#5
REVIEW
Marc D Lipman, Trenton M Gause, Victor A Teran, A Bobby Chhabra, D Nicole Deal
Radial head and neck fractures are one of the most common elbow fractures, comprising 2% to 5% of all fractures, and 30% of elbow fractures. Although uncomplicated Mason type I fractures can be managed nonsurgically, Mason type II-IV fractures require additional intervention. Mason type II-III fractures with 3 or fewer fragments are typically treated with open reduction and internal fixation using 2 to 3 lag screws. Transverse radial neck involvement or axial instability with screw-only fixation has historically required the additional use of a mini fragment T-plate or locking proximal radius plate...
April 27, 2018: Journal of Hand Surgery
https://www.readbyqxmd.com/read/29707551/minimally-invasive-surgery-for-thoracolumbar-spinal-trauma
#6
REVIEW
Corey T Walker, David S Xu, Jakub Godzik, Jay D Turner, Juan S Uribe, William D Smith
The indications for operative intervention after thoracolumbar spine trauma have been well described. Advances in minimally invasive techniques, including percutaneous pedicle screw fixation and mini-open anterolateral retractor-based approaches can improve surgical outcomes when appropriately applied by reducing blood loss, operative duration and post-operative pain. Moreover, they allow for theoretical advantages by preservation of muscular and skeletal blood supply and innervation that is typically lost during the muscular dissection of open approaches...
March 2018: Annals of Translational Medicine
https://www.readbyqxmd.com/read/29691558/-study-of-three-dimensional-anatomical-relationship-between-infrazygomatic-crest-and-maxillary-sinus-for-mini-screw-insertion
#7
Peng Wang, Zheng-Xi Chen, Jun Wu, Zhen-Qi Chen
PURPOSE: To measure the thickness of the infrazygomatic(IZ) crest above the maxillary first molar and analyze its relationship with maxillary sinus as to derive clinical implications and provide guidance for placements of orthodontic mini-screw. METHODS: Thirty seven cone-beam CT(CBCT) images of infrazygomatic crest sites were collected from data of 19 adult inter-treatment orthodontic patients. Based on the relationship of maxillary sinus floor and mesiobuccal root of the maxillary first molar, the subjects were divided into high sinus floor group (n=13) and low sinus floor group (n=24)...
December 2017: Shanghai Kou Qiang Yi Xue, Shanghai Journal of Stomatology
https://www.readbyqxmd.com/read/29684308/fracture-healing-and-bone-remodeling-with-human-standard-sized-magnesium-versus-polylactide-co-glycolide-plate-and-screw-systems-using-a-mini-swine-craniomaxillofacial-osteotomy-fixation-model
#8
Benoît Schaller, John Patrik Matthias Burkhard, Madeleine Chagnon, Stefan Beck, Thomas Imwinkelried, Michel Assad
PURPOSE: This study compared the degradation profile, safety, and efficacy of bioresorbable magnesium alloy and polylactide-co-glycolide (PLGA) polymer osteosynthesis systems for the treatment of fractures in a load-sharing maxillofacial environment using a new mini-swine fracture fixation model. MATERIALS AND METHODS: Two types of clinically relevant situations were evaluated in 5 Yucatan miniature pigs. Defined porcine midface osteotomies of the supraorbital rim and zygoma were created and fixed with either a coated magnesium (test animals) or PLGA plate and screw osteosynthesis system (control animals)...
March 31, 2018: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/29676258/-multiple-uses-of-skeletal-anchorages-taking-advantage-of-mini-screws-to-improve-aesthetics-with-active-and-passive-appliances
#9
Stéphane Renger, Mélanie Gremeret, Sarah Gebeile-Chauty
INTRODUCTION: The main causes of failures in canine traction are anchorage defects, incorrect direction of force, uncontrolled forces. An adolescent female (10 years, 9 months) presents with two included canines on the maxillary arch, in a palatal position and her lateral incisors (12 and 22) are microdontic. Two mini-screws are inserted on the palate, in a mesial position to 16 and 26 to secure the traction of 13 and 23; in general, braces are bonded after this first step. After debonding, mini-screws remain to help stabilize the palatal plate during the retention period and to avoid unaesthetic metallic wires and hooks which sometimes cause occlusal interferences...
March 2018: L' Orthodontie Française
https://www.readbyqxmd.com/read/29676252/-completely-customized-lingual-orthodontics-to-correct-class-ii-malocclusion-in-adolescents
#10
Ons Alouini, Dirk Wiechmann
INTRODUCTION: Completely-customized lingual orthodontics is an efficient, predictable and esthetic solution for our patients. Adolescents showing a class II malocclusion represent the majority of patients in orthodontic practices. Several modes of treatment are available to correct this sagittal discrepancy such as inter-maxillary elastics, flexible or rigid protrusion devices, maxillary distalization using mini-screws or symmetric and asymmetric extractions. The choice depends on several decision criteria such as the severity of the malocclusion, the symmetry of the class II discrepancy as well as the age and the motivation of the patient...
March 2018: L' Orthodontie Française
https://www.readbyqxmd.com/read/29670905/cortical-bone-trajectory-screws-in-posterior-lumbar-interbody-fusion-minimally-invasive-surgery-for-maximal-muscle-sparing-a-prospective-comparative-study-with-the-traditional-open-technique
#11
Nicola Marengo, Marco Ajello, Michele Federico Pecoraro, Giulia Pilloni, Giovanni Vercelli, Fabio Cofano, Francesco Zenga, Alessandro Ducati, Diego Garbossa
Introduction: A prospective comparative study between classical posterior interbody fusion with peduncular screws and the new technique with divergent cortical screws was conducted. Material and Methods: Only patients with monosegmental degenerative disease were recruited into this study. We analyzed a cohort of 40 patients treated from January 2015 to March 2016 divided into 2 groups (20 patients went to traditional open surgery and 20 patients under mini-invasive strategy)...
2018: BioMed Research International
https://www.readbyqxmd.com/read/29658979/mini-fragment-fixation-is-equivalent-to-bicortical-screw-fixation-for-horizontal-medial-malleolus-fractures
#12
Adam M Wegner, Philip R Wolinsky, Michael A Robbins, Tanya C Garcia, Derek F Amanatullah
Horizontal fractures of the medial malleolus occur through application of valgus or abduction force through the ankle that creates a tension failure of the medial malleolus. The authors hypothesize that mini-fragment T-plates may offer improved fixation, but the optimal fixation construct for these fractures remains unclear. Forty synthetic distal tibiae with identical osteotomies were randomized into 4 fixation constructs: (1) two parallel unicortical cancellous screws; (2) two parallel bicortical cortical screws; (3) a contoured mini-fragment T-plate with 2 unicortical screws in the fragment and 2 bicortical screws in the shaft; and (4) a contoured mini-fragment T-plate with 2 bicortical screws in the fragment and 2 unicortical screws in the shaft...
April 16, 2018: Orthopedics
https://www.readbyqxmd.com/read/29644289/transpedicular-direct-osteosynthesis-of-hangman-s-fracture-from-a-mini-open-exposure-as-a-less-invasive-procedure-a-technical-note
#13
Viktor Zsolt Kovari, Attila Josvai, Andras Csokay
This surgical technical case report presents initial clinical experience and preliminary results with a less invasive surgical solution for selected hangman's fracture. A well-known stabilization technique (i.e. direct transpedicular osteosynthesis) was applied through a minimally invasive small incision transmuscular posterior approach guided by a standard C-arm fluoroscopy. This mini-open approach to C2 vertebra allows similar dissection, visualization of the bony landmarks, visual control of the transpedicular screw path drilling, tapping and screw insertion to the standard posterior cervical spine approach...
December 2017: Trauma Case Reports
https://www.readbyqxmd.com/read/29628423/micrographic-study-and-torsional-strength-of-grade-23-titanium-mini-implants-recycled-for-orthodontic-purposes
#14
Nadir Kaci, Karima Hakem, Safia Laraba, Nasser Benrekaa, Michel Le Gall
INTRODUCTION: The aim of this study was to identify the fracture resistance of grade 23 Titanium mini-implants recycled for orthodontic purposes and having stayed in the mouth during different periods of time. MATERIALS AND METHODS: A total of 52 hybrid-designed titanium mini-implants, threaded length L=8mm, self-drilling and self-taping were used in 32 patients presenting orthodontic anomalies which required the use of mini-implants. Two types of tests were performed: polarizing optical imagery to assess the surface characteristics of the mini-implants (polarizing optical microscopy) and (mechanical) torsional strength tests, more quantitative, in order to establish the breaking point of the mini-implants during their re-use...
April 5, 2018: International Orthodontics
https://www.readbyqxmd.com/read/29608666/success-of-palatal-implants-or-mini-screws-placed-median-or-paramedian-for-the-reinforcement-of-anchorage-during-orthodontic-treatment-a-systematic-review
#15
Lydia Kakali, Majed Alharbi, Nikolaos Pandis, Nikolaos Gkantidis, Dimitrios Kloukos
Objectives: To assess the failure rates of palatal implants and palatal mini-screws, independently and comparatively, used for supplementing anchorage during orthodontic treatment. Protocol and registration: The protocol was not registered prior to the study. This study was not registered in any publicly assessable database. Materials and methods: Screening for inclusion eligibility, quality assessment of studies, and data extraction was performed independently by two authors...
March 28, 2018: European Journal of Orthodontics
https://www.readbyqxmd.com/read/29587695/comparison-between-absorbable-pins-and-mini-screw-fixations-for-the-treatment-of-radial-head-fractures-mason-type-ii-iii
#16
Luigi Tarallo, Raffaele Mugnai, Martina Rocchi, Francesco Capra, Fabio Catani
BACKGROUND: The treatment of comminuted radial head fractures can include prosthetic replacement or open reduction and internal fixation. The purpose of this study is to evaluate the results of two different internal fixation systems for Mason type II-III radial head fractures. METHODS: Between 2005 and 2015, 82 patients were treated using pins and 65 patients by mini-screws. The follow-up protocol included: a clinical evaluation 15 days after surgery, and clinical and radiographic evaluations performed at 30 and 60 day intervals, unless any complications were reported by the patient...
March 27, 2018: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/29489548/mechanical-complications-related-to-the-retention-screws-of-prefabricated-metal-abutments-with-different-angulations-a-retrospective-study-with-916-implants
#17
Patrícia Medeiros Araújo, Guenther Schuldt Filho, Cimara Fortes Ferreira, Cesar Augusto Magalhães Benfatti, David Richard Cagna, Marco Aurélio Bianchini
OBJECTIVES: The present retrospective study assessed the clinical performance of abutment screws from prefabricated metal abutments and compared technical complication rates between straight and angled abutments. MATERIALS AND METHODS: Dental charts were selected for patients with dental implant rehabilitations delivered between 1998 and 2012. Abutment angulation, prosthetic screw type, and presence of complications that occurred during the selected time period were collected...
February 27, 2018: Implant Dentistry
https://www.readbyqxmd.com/read/29486668/partially-threaded-headless-screw-may-benefit-adequate-interfragmentary-compression-and-reduced-driving-torque-for-small-bone-fixation
#18
Chen-Chiang Lin, Kang-Ping Lin, Chuan-Ching Huang, Wen-Chuan Chen, Hung-Wen Wei, Cheng-Lun Tsai, Kun-Jhih Lin
Headless compression screws (HCSs) are commonly used to fixate small bones and articular fractures. Understanding the biomechanical efficacy of different HCS designs can help surgeons make proper interfragmentary compression when a specific implant is chosen. HCSs with three different central shaft designs (unthreaded, fully threaded, and partially threaded) were studied: the Herbert-Whipple, Mini-Acutrak 2, and headless reduction (HLR). Polyurethane foam blocks were machined with a simulated fracture gap of 0...
January 2018: Journal of Orthopaedic Surgery
https://www.readbyqxmd.com/read/29382994/clinical-and-mri-evaluation-of-orthodontic-mini-screws-for-disc-repositioning-in-internal-derangement-of-tmj-a-prospective-study
#19
K Rajkumar, S K Roy Chowdhury, Ramen Sinha
Purpose: The purpose of this study was to assess the efficacy of orthodontic mini-screws as a modified suture anchor for disc repositioning in cases of internal derangement of the temporomandibular joint. Patients and Methods: A prospective evaluation of ten patients was undertaken for a period of 6 months using this modified approach from Jan 2014 to Jun 2016. Symptomatic patients with clinical and MRI features suggestive of internal derangement of TMJ and willing to undergo surgical repositioning of articular disc to alleviate symptoms of temporomandibular dysfunction were taken up for the study...
March 2018: Journal of Maxillofacial and Oral Surgery
https://www.readbyqxmd.com/read/29372857/early-experience-of-placing-image-guided-minimally-invasive-pedicle-screws-without-k-wires-or-bone-anchored-trackers
#20
Gregory M Malham, Rhiannon M Parker
OBJECTIVE Image guidance for spine surgery has been reported to improve the accuracy of pedicle screw placement and reduce revision rates and radiation exposure. Current navigation and robot-assisted techniques for percutaneous screws rely on bone-anchored trackers and Kirchner wires (K-wires). There is a paucity of published data regarding the placement of image-guided percutaneous screws without K-wires. A new skin-adhesive stereotactic patient tracker (SpineMask) eliminates both an invasive bone-anchored tracker and K-wires for pedicle screw placement...
April 2018: Journal of Neurosurgery. Spine
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"