21 results match your criteria standard self-drilling

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Blast Test and Failure Mechanisms of Soft-Core Sandwich Panels for Storage Halls Applications.

Materials (Basel) 2020 Dec 25;14(1). Epub 2020 Dec 25.

Institute of Structural Analysis, Faculty of Civil and Transport Engineering, Poznan University of Technology, 61-614 Poznań, Poland.

In this paper, an experimental investigation is presented for sandwich panels with various core layer materials (polyisocyanurate foam, mineral wool, and expanded polystyrene) when subjected to a justified blast load. The field tests simulated the case for when 5 kg of trinitrotoluene (TNT) is localized outside a building's facade with a 5150 mm stand-off distance. The size and distance of the blast load from the obstacle can be understood as the case of both accidental action and a real terroristic threat. Read More

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December 2020

Active Transcutaneous Bone Conduction Implant: Audiometric Outcomes Following a Novel Middle Fossa Approach With Self-Drilling Screws.

Otol Neurotol 2020 06;41(5):605-613

Department of Otolaryngology-Head and Neck Surgery, Schulich School of Medicine and Dentistry, Western University.

Objective: To present surgical and audiometric outcomes of patients implanted with an active transcutaneous bone conduction implant following the novel middle fossa surgical approach with self-drilling screws.

Study Design: Retrospective review.

Setting: Tertiary care center. Read More

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Cranial flap fixation in sheep using a resorbable bone adhesive.

J Neurosurg 2020 Feb 7:1-9. Epub 2020 Feb 7.

5LaunchPad Medical, Lowell, Massachusetts.

Objective: The authors' goal in this study was to investigate the use of a novel, bioresorbable, osteoconductive, wet-field mineral-organic bone adhesive composed of tetracalcium phosphate and phosphoserine (TTCP-PS) for cranial bone flap fixation and compare it with conventional low-profile titanium plates and self-drilling screws.

Methods: An ovine craniotomy surgical model was used to evaluate the safety and efficacy of TTCP-PS over 2 years. Bilateral cranial defects were created in 41 sheep and were replaced in their original position. Read More

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February 2020

Cement augmentation of odontoid peg fractures: the effect of cement volume and distribution on construct stiffness.

Eur Spine J 2020 05 4;29(5):977-985. Epub 2020 Jan 4.

Third Faculty of Medicine, Charles University, Prague, Ruska 2411/87, 100 00, Praha 10, Vinohrady, Czechia.

Purpose: The cement augmentation of a conventional anterior screw fixation in type II odontoid process fractures for elderly patients significantly increased stiffness and load to failure under anterior-posterior load in comparison with non-augmented fixation. The amount and quality of bone cement are usually taken ad hoc in clinical practise. In this study, we wanted to clarify the role of bone cement amount and its quality to the stiffness of odontoid and vertebrae body junction. Read More

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The middle fossa approach with self-drilling screws: a novel technique for BONEBRIDGE implantation.

J Otolaryngol Head Neck Surg 2019 Jul 29;48(1):35. Epub 2019 Jul 29.

Department of Otolaryngology-Head and Neck Surgery, Schulich School of Medicine & Dentistry, Western University, London, Canada.

Background: Bone conduction implants can be used in the treatment of conductive or mixed hearing loss. The BONEBRIDGE bone conduction implant (BB-BCI) is an active, transcutaneous device. BB-BCI implantation can be performed through either the transmastoid or retrosigmoid approach with their respective limitations. Read More

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How do geometry-related parameters influence the clinical performance of orthodontic mini-implants? A systematic review and meta-analysis.

Int J Oral Maxillofac Surg 2017 Dec 4;46(12):1539-1551. Epub 2017 Jul 4.

Department of Paediatric Dentistry and Orthodontics, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil. Electronic address:

The aim of this systematic review and meta-analysis was to investigate how parameters related to geometry influence the clinical performance of orthodontic mini-implants (MIs). Systematic searches were performed in electronic databases including MEDLINE, Scopus, Web of Science, Virtual Health Library, and Cochrane Library and reference lists up to March 2016. Eligibility criteria comprised clinical studies involving patients who received MIs for orthodontic anchorage, with data for categories of MI dimension, shape, and thread design and insertion site, and evaluated by assessment of primary and secondary stability. Read More

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December 2017

The Effect of Insertion Technique on Temperatures for Standard and Self-Drilling External Fixation Pins.

J Orthop Trauma 2017 Aug;31(8):e247-e251

*Mechanical Engineering, Bucknell University, Lewisburg, PA; and †Orthopaedics, Geisinger Health System, Danville, PA.

Objectives: No studies have assessed the effects of parameters associated with insertion temperature in modern self-drilling external fixation pins. The current study assessed how varying the presence of irrigation, insertion speed, and force impacted the insertion temperatures of 2 types of standard and self-drilling external fixation half pins.

Methods: Seventy tests were conducted with 10 trials for 4 conditions on self-drilling pins, and 3 conditions for standard pins. Read More

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Insertion torque recordings for the diagnosis of contact between orthodontic mini-implants and dental roots: a systematic review.

Syst Rev 2016 Mar 31;5:50. Epub 2016 Mar 31.

Centre for Evidence-Based Medicine, Nuffield Department of Primary Care Health Sciences, University of Oxford, New Radcliffe House, 2nd floor, Jericho, Oxford, OX2 6NW, UK.

Background: Most orthodontic mini-implants (OMIs) are inserted between dental roots. The prevalence of contacting these structures is high. Such contacts can cause permanent root damage and implant instability. Read More

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Using self-drilling screws in volar plate osteosynthesis for distal radius fractures: a feasibility study.

BMC Musculoskelet Disord 2016 Mar 10;17:120. Epub 2016 Mar 10.

Department of Trauma Surgery, Campus Innenstadt, Ludwig-Maximilians-University, Nussbaumstrasse 20, 80336, Munich, Germany.

Background: Symptomatic extensor tendon irritation is a frequent complication in volar plate osteosynthesis of distal radius fractures. It is typically caused by dorsal screw protrusion and overdrilling of the dorsal cortex. The use of self-drilling locking screws (SDLS) could overcome both causes. Read More

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Effect of different sterilization modes on the surface morphology, ion release, and bone reaction of retrieved micro-implants.

Angle Orthod 2015 Jan;85(1):39-47

a  Assistant Professor of Dental Biomaterials, Faculty of Dentistry, Mansoura University, Mansoura, Egypt.

Objective: To compare as-received and sterilized micro-implants in order to assess the prospects of reusing them.

Materials And Methods: Forty micro-implants from a single manufacturing lot were used in the study. Thirty were retrieved from patients after successful service in their mouth and with no signs of failure. Read More

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January 2015

Comparative biomechanical study on three miniplates osteosynthesis systems for stabilisation of low condylar fractures of the mandible.

Br J Oral Maxillofac Surg 2014 Apr;52(4):317-22

Department of Oral and Maxillofacial Surgery, University Medical Centre Schleswig-Holstein, Campus Lübeck, Germany.

Open reduction and fixation of low condylar fractures of the mandible can be achieved by many osteosynthesis systems that differ in size, shape, and site of placement according to the surgical approach. We investigated the maximum load and rigidity of 4 osteosynthesis systems: the standard double 4-hole straight miniplates, the inverted y-miniplate (with and without self-drilling screws), and the TriLock Delta condyle trauma plate. The standard double 4-hole straight miniplate osteosynthesis achieved the best fixation and resistance in view of a mean (SD) maximum load of 539. Read More

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Bone damage associated with orthodontic placement of miniscrew implants in an animal model.

Am J Orthod Dentofacial Orthop 2012 Apr;141(4):412-8

Division of Orthodontics, College of Dentistry, Ohio State University, Columbus, Ohio, USA.

Introduction: The purposes of this study were to quantify bone damage associated with insertion of 2 types of miniscrew implants and to relate the amount of bone damage to monocortical plate thickness.

Methods: Nondrilling (n = 28) and self-drilling (n = 28) miniscrew implants (6 × 1.6 mm, Dentaurum, Newtown, Pa), and pilot holes (n = 26) were placed bilaterally in the maxillae and the mandibles of 5 adult dogs immediately after death. Read More

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Patient expectations, acceptance and preferences in treatment with orthodontic mini-implants. A randomly controlled study. Part I: insertion techniques.

J Orofac Orthop 2011 Mar;72(2):93-102

Objective: The objective of this study was to compare two different insertion techniques as well as two different anesthesia injection methods carried out on patients undergoing orthodontic treatment with mini-implants to reinforce skeletal anchorage.

Patients And Methods: A total of 30 patients were enrolled and randomly divided into two groups, A and B. For the patients in group A the mini-implants were inserted manually after pre-drilling with a dental handpiece. Read More

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An in vitro investigation of peak insertion torque values of six commercially available mini-implants.

Eur J Orthod 2011 Dec 24;33(6):660-6. Epub 2010 Dec 24.

Department of Orthodontics, King's College London Dental Institute, UK.

This study compared peak insertion torque values of six commercially available self-drilling mini-implants [Mini Spider® screw (1.5 × 8 mm), Infinitas® (1.5 × 9 mm), Vector TAS® (1. Read More

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December 2011

Comparative analysis of anchorage systems for micro implant orthodontics.

Prog Orthod 2010 8;11(2):105-17. Epub 2010 Oct 8.

Department of Orthodontics and Clinical Gnatology, University of Padua, Italy.

Objective: The study analysed twelve anchorage systems based on micro implants in terms of their bio-mechanical properties and appraised their actual clinical effectiveness.

Materials And Methods: The analysed micro implants had data provided by the manufacturers or extracted from articles published in specialised journals. The parameters taken into account were: material, surface treatment, head type, length, diameter, neck length, filleted self drilling or self tapping surface, applicable orthodontic forces, possibility of immediate loading, and device removal. Read More

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February 2012

Trajectory analysis and pullout strength of self-centering lumbar pedicle screws.

J Neurosurg Spine 2009 May;10(5):486-91

Division of Neurological Surgery, Barrow Neurological Institute, St Joseph's Hospital and Medical Center, Phoenix, AZ 85013, USA.

Object: An experiment was performed to study the limits of the ability of screws designed to center themselves in the pedicle during insertion, and to study whether straight-ahead versus inward screw insertion trajectories differ in their resistance to pullout.

Methods: Forty-nine human cadaveric lumbar vertebrae were studied. Pedicle screws were inserted in trajectories starting 0 degrees, 10 degrees, 20 degrees, or 30 degrees from the optimal trajectory, either medially or laterally misdirected. Read More

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[Z2 appliance: the pre-adjusted appliance based on Chinese normal occlusion].

Hua Xi Kou Qiang Yi Xue Za Zhi 2008 Dec;26(6):573-9

Dept. of Orthodontics, School and Hospital of Stomatology, Peking University, Beijing 100081, China.

Z2 appliance is the pre-adjusted appliance designed for Chinese orthodontic patients. The prescription of the appliance is based on Chinese normal occlusion, which is much different from the West in the first and the second orders as well as the third one. The appliance routinely includes 20 brackets and 8 molar buccal tubers with 3 standard arch forms. Read More

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December 2008

Immediate loading: a new implant technique with immediate loading and aesthetics: Nobel Active™.

Oral Implantol (Rome) 2008 Jul 1;1(2):50-5. Epub 2009 Feb 1.

Department of Odontostomatological Sciences, University of Rome "Tor Vergata", Italy.

The aim of this study is to evaluate the short time aesthetic and functional outcome of a new implant system, the Nobel Active™. The Nobel Active™ features several innovations such as an extensive self-drilling capacity, axial and radial bone compression and an inward tapered collar allowing for marginal bone maintance an soft tissue stabilization. This design makes it possible to place the implant into narrower osteotomies, thus requiring less drilling, compared to conventional implants. Read More

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A biomechanical and histological analysis of standard versus hydroxyapatite-coated pins for external fixation.

J Biomed Mater Res B Appl Biomater 2008 Aug;86(2):417-21

Rizzoli Orthopaedic Institute, University of Bologna, Bologna, Italy.

This sheep study was designed to make a comparative evaluation of two external fixation pin types each with and without hydroxyapatite (HA) coating. The two pins had different taper, pitch, and self drilling capabilities. Twenty Orthofix standard, self-tapping pins (group A), 20 Orthofix HA-coated, self-tapping pins (group B), 20 X-caliber, self-drilling, self-tapping pins (group C), and 20 X-caliber HA-coated, self-drilling, self-tapping pins (group D) were selected. Read More

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Inferior fixation with a new pin design for external fixation: a randomized study in 50 patients operated on by the hemicallotasis technique.

Acta Orthop 2008 Feb;79(1):48-52

Department of Orthopedics, Lund University Hospital, Lund, Sweden.

Background And Purpose: Tibial osteotomy by the hemicallotasis technique (HCO) requires strong pin fixation. We compared pin fixation in HCO using a new self-drilling XCaliber pin (Orthofix) with optimized thread and tip design, with the commonly used standard pin (Orthofix).

Patients And Methods: 50 patients, mean age 51 (35-66) years, to be treated by HCO were randomized to standard pins or XCaliber pins. Read More

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February 2008

New innovations in craniomaxillofacial fixation: the 2.0 lock system.

Keio J Med 2003 Jun;52(2):120-7

Departments of Oral & Maxillofacial Surgery and Surgical & Hospital Dentistry, University of Louisville School of Dentistry, Louisville, KY 40292, USA.

Rigid internal fixation with plates and screws is now standard for the treatment of fractures, osteotomies and reconstruction of the craniomaxillofacial skeleton. The latest innovations are self-drilling, self-tapping screws and locking miniplates. These screws offer the prospect of less instrumentation and faster application. Read More

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