114,820 results match your criteria Implant Dentistry[Journal]


[Acetabular Revision: Reconstruction of Cavitary and Segmental Defects with Special Consideration of Modular Highly Porous Acetabular Revision Systems].

Z Orthop Unfall 2018 Dec 14;156(6):692-703. Epub 2018 Dec 14.

Klinik für Orthopädie, Universitätsklinikum Ulm.

Due to the increasing number of primary hip arthroplasty procedures, revision surgery will be an increasing challenge. The surgeon is frequently confronted with important acetabular defects. Careful preoperative planning is essential to achieve functional and long-term success. Read More

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December 2018

Biomechanical testing of a polycarbonate-urethane-based dynamic instrumentation system under physiological conditions.

Clin Biomech (Bristol, Avon) 2018 Dec 6;61:112-119. Epub 2018 Dec 6.

University of Cologne, Centre for Orthopaedic and Trauma Surgery, Germany.

Background: Posterior dynamic stabilization systems are developed to maintain the healthy biomechanics of the spine while providing stabilization. Numerous dynamic systems incorporate polycarbonate urethane with temperature- and moisture-dependent material properties. In the underlying study, a novel test rig is used to evaluate the biomechanical performance of a system containing polycarbonate urethane. Read More

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December 2018

Near-infrared light control of bone regeneration with biodegradable photothermal osteoimplant.

Biomaterials 2018 Dec 10;193:1-11. Epub 2018 Dec 10.

Institute of Biomedicine and Biotechnology, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China; Department of Physics and Materials Science, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, China. Electronic address:

Mild heat stimulation can promote the restoration of bone defects but unfortunately, the delivery of exo-hyperthermy into human body is not efficient enough. In this study, mild heat-induced osteogenesis with high efficacy is demonstrated on an osteoimplant composed of black phosphorus nanosheets and poly(lactic-co-glycolic acid) (BPs@PLGA) with the participation of near-infrared (NIR) light irradiation. BPs@PLGA with only 0. Read More

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December 2018
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Effects of laser shock peening on the corrosion behavior and biocompatibility of a nickel-titanium alloy.

J Biomed Mater Res B Appl Biomater 2018 Dec 14. Epub 2018 Dec 14.

Department of Mechanical Engineering, University of Akron, Akron, Ohio, 44325.

Nickel-titanium (NiTi) alloy is an attractive material for biomedical implant applications. In this study, the effects of laser shock peening (LSP) on the biocompatibility, corrosion resistance, ion release rate and hardness of NiTi were characterized. The cell culture study indicated that the LSP-treated NiTi samples had lower cytotoxicity and higher cell survival rate than the untreated samples. Read More

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December 2018

In Vivo Photovoltaic Performance of a Silicon Nanowire Photodiode-Based Retinal Prosthesis.

Invest Ophthalmol Vis Sci 2018 Dec;59(15):5885-5892

Jacobs Retina Center at Shiley Eye Institute, Department of Ophthalmology, University of California, San Diego, California, United States.

Purpose: For more than 20 years, there has been an international, multidisciplinary effort to develop retinal prostheses to restore functional vision to patients blinded by retinal degeneration. We developed a novel subretinal prosthesis with 1512 optically addressed silicon nanowire photodiodes, which transduce incident light into an electrical stimulation of the remaining retinal circuitry. This study was conducted to evaluate the efficacy of optically driving the subretinal prosthesis to produce visual cortex activation via electrical stimulation of the retina. Read More

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December 2018

Orbital Floor and Rim Reconstruction With a Titanium Orbital Implant and Acellular Dermis.

Ophthalmic Plast Reconstr Surg 2018 Dec 7. Epub 2018 Dec 7.

Department of Ophthalmology, University of Texas Southwestern Medical Center, Dallas, Texas, U.S.A.

Reconstruction of the orbital rim and floor following tumor excision is traditionally performed with bone grafts, vascularized grafts, or free flaps. The authors describe a case of an osteosarcoma of the maxillary sinus and a second case of an ossifying fibroma of the orbital floor, both of which required reconstruction of the orbital floor and rim. In both of these cases, reconstruction of the orbital floor and rim was performed with a titanium implant whose anterior portion was bent inferiorly to recreate the orbital rim. Read More

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December 2018

A Rare Cause for Recurrent Implant-Related Inflammation of Orbit: Dacryocystitis.

J Craniofac Surg 2018 Dec 13. Epub 2018 Dec 13.

Plastic, Reconstructive, and Aesthetic Surgery Department of Mersin University Medical Faculty, Mersin, Turkey.

Ultra-thin porous polyethylene has been widely preferred in orbital blow out fracture repair for many years as a safe and stable material. Delayed complications related to the implant in orbital blow out fracture repair are very rare and usually begin as a periorbital inflammation. Infections and tissue reaction to the foreign body are regarded as main causes for implant-related inflammation of which symptoms may vary among the patients and may involve subacute and chronic eyelid swelling, skin redness, pain, conjunctival injection, proptosis, and acute orbital inflammation. Read More

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December 2018

[Cochlear implant for elder patients over 75 years old].

Lin Chung Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2018 Oct;32(19):1477-1479

Department of Otolaryngology Head and Neck Surgery, Beijing Friendship Hospital, Capital Medical University, Beijing, 100032, China.

To evaluate the operation safety, hearing as well as speech results of cochlear implantation that were applied in patients over 75 years old. A series of patients who were diagnosed as severe to profound sensorineural hearing loss and received cochlear implantation were admitted. The clinical data and rehabilitation effects of the patients who were over 75 years old were summarized. Read More

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October 2018

[Research progress on auditory neuropathy spectrum disorder and cochlear implantation in infants and young children].

Authors:
J Y Chen Y X Li

Lin Chung Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2018 Jul;32(14):1120-1124

Auditory neuropathy is a disorder characterized by absent or severely abnormal auditory brainstem response (ABR) with intact outer hair cell function, as evidenced by the presence of evoked otoacoustic emissions and/or cochlear microphonics. Unlike patients with sensory hearing loss who show clinical evidence of impaired outer hair cell function. For ANSD patients, clinical rehabilitation is mainly limited to hearing aid wearing and cochlear implantation. Read More

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[Evaluating auditory pathway by promontory stimulation test and postoperative hearing rehabilitation(28 cases)].

Lin Chung Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2018 Dec;32(24):1851-1856

Department of Otolaryngology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences,Beijing, 100730, China.

Objective:〖WT〗To evaluate auditory pathway in patients by promontory stimulation test(PST) before artificial cochlear implantation(CI), and to analyze the relationship between postoperative hearing rehabilitation and PST. Selecting 28 cases of adult subjects without residual hearing who accepted promontory stimulation test, different etiology led to bilateral severe sensor neural deafness. PST was examined by measuring the electric auditory threshold(T value) and maximum comfort threshold(M value) of 50, 100 and 200 Hz pulse square waves, and by measuring frequency discrimination. Read More

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December 2018

[Robotic surgery : the future of prosthetic surgery ?]

Rev Med Suisse 2018 Dec;14(631):2238-2242

Service d'orthopédie et traumatologie de l'appareil moteur, HUG, 1211 Genève 14.

Indications for hip and knee replacement will continue to grow over the next few years. Robotic systems have been developed since the early 1990s in order to optimize implant positioning, to potentially improve clinical results, and to reduce perioperative morbidity. Currently, the different available systems certainly improve the accuracy and reproducibility of prosthetic components placement. Read More

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December 2018

[Leucocyte esterase as a reliable diagnostic, cost-effective and fast in knee infections].

Acta Ortop Mex 2018 Jul-Aug;32(4):198-202

Dirección de Educación e Investigación en Salud, Hospital de Traumatología. Unidad Médica de Alta Especialidad (UMAE). «Dr. Victorio de la Fuente Narváez», Instituto Mexicano del Seguro Social (IMSS). Ciudad de México. México.

Background: The articular infection represents a challenge due to its complexity and its devastating effect when not treated promptly. We have various diagnostic studies: cultures, ESR, CRP, count of leukocytes, among others but none is specific, it takes more than 30 minutes to complete and require complex infrastructure. In this study we determine the sensitivity and specificity of the leukocyte esterase for detection of an infectious process joint in Mexican population. Read More

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Dual Therapy Coating on Micro/Nanoscale Porous Polyetheretherketone to Eradicate Biofilms and Accelerate Bone Tissue Repair.

Macromol Biosci 2018 Dec 14:e1800376. Epub 2018 Dec 14.

School of Chemical Engineering, Sichuan University, Chengdu, 610065, China.

Defective osteogenesis and latent infections continue to be two major issues in the therapy of bone tissue regeneration. In this study, a unique hierarchically micro/nanoscale-architecture is first proposed and produced on polyetheretherketone (PEEK). Besides, a "simvastatin-PLLA film-tobramycin microspheres" delivery system is subsequently fabricated to endow the PEEK implant with osteogenic and antibacterial capabilities. Read More

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December 2018

Cytokine, chemokine and growth factor levels in peri-implant sulcus during wound healing and osseointegration after piezosurgical versus conventional implant site preparation: Randomized, controlled, split-mouth trial.

J Periodontol 2018 Dec 14. Epub 2018 Dec 14.

Division of Oral Diseases, Department of Dental Medicine, Karolinska Institute, Stockholm, Sweden.

Aim: To evaluate the cytokine, chemokine and growth factor levels in peri-implant sulcular fluid (PISF) during healing and osseointegration at osteotomy sites prepared either with piezosurgery (PS) or drills.

Materials And Methods: Fourteen patients having contralateral partial edentulism in the posterior maxilla were enrolled and 38 osteotomies were prepared. Implants were placed with one-stage surgery. Read More

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December 2018

An antibiofilm coating of 5-aryl-2-aminoimidazole covalently attached to a titanium surface.

J Biomed Mater Res B Appl Biomater 2018 Dec 13. Epub 2018 Dec 13.

Department of Microbial and Molecular Systems, Centre of Microbial and Plant Genetics (CMPG), KU Leuven, Kasteelpark Arenberg 20 Box 2460, 3001 Leuven, Belgium.

Biofilms, especially those formed by Staphylococcus aureus, play a key role in the development of orthopedic implant infections. Eradication of these infections is challenging due to the elevated tolerance of biofilm cells against antimicrobial agents. In this study, we developed an antibiofilm coating consisting of 5-(4-bromophenyl)-N-cyclopentyl-1-octyl-1H-imidazol-2-amine, designated as LC0024, covalently bound to a titanium implant surface (LC0024-Ti). Read More

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December 2018

Influence of reduced tip-apex distance on helical blade fixation - a biomechanical study.

J Orthop Res 2018 Dec 13. Epub 2018 Dec 13.

AO Research Institute Davos, Clavadelerstrasse 8, 7270 Davos Platz, Switzerland.

Migration profile of helical blades differs from conventional screw design. Tip-apex distance (TAD) greater than 25mm is associated with early failure in hip screws. This study investigates the effect of a reduced TAD on helical blade fixation. Read More

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December 2018

The functional loading of implants increases their stability: A retrospective clinical study.

Clin Implant Dent Relat Res 2018 Dec 13. Epub 2018 Dec 13.

Department of Stomatology I, Faculty of Medicine and Dentistry, University of the Basque Country, Leioa, Spain.

Purpose: To assess the difference in the evolution of implant stability values, determined by resonance frequency analysis (RFA), between two groups of implants subjected to two different loading protocols: immediate and delayed.

Materials And Methods: A retrospective clinical study was conducted, including a total of 93 implants placed in 38 patients. All implants corresponded to one of two models of the Klockner Implant System (Essential Cone and Vega) and were divided into two groups according to the loading protocol adopted: delayed loading in group A (>10 weeks) and immediate loading in group B (<48 hours). Read More

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December 2018

Clinical indices and local levels of inflammatory biomarkers in per-implant health of obese and nonobese individuals.

Clin Implant Dent Relat Res 2018 Dec 13. Epub 2018 Dec 13.

Department of Periodontology, Faculty of Dentistry, Ziauddin University, Karachi, Pakistan.

Background: Obesity seem to regulate peri-implant health. It is proposed that peri-implant crevicular fluid (PICF) levels of interleukin (IL)-1β and IL-6 are higher in obese as compared to nonobese individuals.

Objective: The purpose of the present clinico-laboratory study is to estimate and compare the clinical and radiographic indices and PICF levels of IL-1β and IL-6 among obese and nonobese patients. Read More

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December 2018

Poly(DL-Lactide-co-ε-Caprolactone)/Poly(Acrylic Acid) Composite Implant for Controlled Delivery of Cationic Drugs.

Macromol Biosci 2018 Dec 13:e1800322. Epub 2018 Dec 13.

Institute of Technical Sciences of the Serbian Academy of Sciences and Arts, Knez Mihailova 35/IV, 11000, Belgrade, Serbia.

Poly(DL-lactide-co-ε-caprolactone)/poly(acrylic acid) implantable composite reservoirs for cationic drugs are synthesized by sequentially applying photoirradiation and liquid phase inversion. The chemical composition and microstructure of reservoirs are characterized with Fourier transform infrared spectroscopy-attenuated total reflection (FTIR-ATR) and scanning electron microscopy (SEM), respectively. Drug loading and release properties are investigated using methylene blue as the drug model. Read More

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December 2018

Contraceptive Use Among Women with Prediabetes and Diabetes in a US National Sample.

J Midwifery Womens Health 2018 Dec 12. Epub 2018 Dec 12.

Introduction: Although elevated blood glucose is associated with adverse maternal and fetal health outcomes, evidence suggests that women with diabetes may not be receiving comprehensive reproductive health care, including family planning and preconception care. Using a population-based sample, we evaluated the relationship between contraceptive use and biomarker-identified diabetes.

Methods: This cross-sectional study used data from 5548 women in the nationally representative National Longitudinal Study of Adolescent to Adult Health (Add Health) from 2007 to 2009. Read More

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December 2018

Buccal bone thickness at dental implants in the maxillary anterior region with large bony defects at time of immediate implant placement: A 1-year cohort study.

Clin Implant Dent Relat Res 2018 Dec 11. Epub 2018 Dec 11.

Department of Oral and Maxillofacial Surgery, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands.

Background: There is lack of studies regarding preservation and possible changes in BBT at dental implants.

Purpose: To assess, on cone beam computer tomograms, the presence of bone at the time of tooth extraction in the maxillary esthetic region and the mean buccal bone thickness 1 month and 1 year after final restoration placement in patients with large bony defects.

Material And Methods: In a cohort study, patients were selected presenting a failing tooth with a large bony defect (test group [n = 20]: large bony defect, immediate placed implant and delayed provisionalization). Read More

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December 2018

Gatekeeper Improves Voluntary Contractility in Patients With Fecal Incontinence.

Surg Innov 2018 Dec 14:1553350618818924. Epub 2018 Dec 14.

1 Proctology Unit, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy.

Background: Gatekeeper (GK) has shown to be safe and effective in patients with fecal incontinence (FI). We aimed to understand its mechanism of action by comparing pre- and post-implant change in the external anal sphincter (EAS) contractility.

Methods: Study of EAS contractility was conducted in 16 FI females (median age = 69 years) before and after implant of 6 GK prostheses. Read More

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December 2018

Implantation of a MitraClip between two previously implanted MitraClips to treat recurrent severe mitral regurgitation.

J Cardiol Cases 2017 Feb 17;15(2):50-52. Epub 2016 Nov 17.

Department of Cardiology, Deutsches Herzzentrum München, Technische Universität München, Munich, Germany.

We first describe the implantation of a MitraClip (Abbott Vascular, Abbott Park, IL, USA) between 2 previously implanted MitraClips to treat recurrent mitral regurgitation (MR). An 82-year-old male patient presented with dyspnea New York Heart Association NYHA class III due to recurrent severe MR 18 months after primarily successful implantation of 2 MitraClips. The initial procedure was performed to treat severe MR due to prolapse and flail of the anterior leaflet and resulted in mild MR after implantation of 2 MitraClips. Read More

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February 2017

A new variation of dual left anterior descending coronary artery.

J Cardiol Cases 2016 Jul 31;14(1):26-28. Epub 2016 Mar 31.

Division of Cardiovascular Health and Disease, Department of Internal Medicine University of Cincinnati, Cincinnati, OH, USA.

A 63-year-old male with past medical history of type II diabetes mellitus, hypertension, hyperlipidemia, stroke, and permanent pacemaker implant for poor chronotropic response to exercise underwent coronary computed tomography angiography (CCTA) for worsening atypical chest pain. The patient had normal myocardial perfusion by nuclear stress testing 3 months prior to this test. A rare variation of dual left anterior descending coronary artery (LAD) was identified by CCTA and subsequent coronary angiography confirmed a dual LAD and revealed no significant stenosis of the coronary arteries. Read More

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Extraction of a trapped pacemaker lead in a pacemaker-dependent patient.

J Cardiol Cases 2016 Mar 27;13(3):82-84. Epub 2015 Nov 27.

Department of Internal Medicine 1 - Cardiology, Linz General Hospital, Johannes Kepler University School of Medicine, Linz, Austria.

A 47-year-old female with a dual chamber pacemaker was referred to our institution for transvenous lead removal because of suspected pocket infection. The history of this patient started in 2002 with a tricuspid valve endocarditis. Therefore, the patient had tricuspid valve repair that yielded a poor outcome. Read More

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EXPERIENCE WITH MANAGING COMPLICATED FRACTURES USING ILIZAROV PRINCIPLE IN LAGOS, NIGERIA.

J West Afr Coll Surg 2017 Jul-Sep;7(3):24-43

Lagos State University Teaching Hospital, Ikeja, Nigeria.

Background: Management of complicated bone fractures in our environment is very challenging. The Ilizarov principle has been found to be a viable management option worldwide, but the use of this method in our environment has been sparsely reported.

Aim: To document our use of Ilizarov method to manage patients with complicated long bone fractures and the outcome. Read More

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December 2018

Epicardial implantation of a transvenous implantable cardioverter-defibrillator system in Ebstein's malformation with tricuspid valve repair.

J Cardiol Cases 2015 Sep 20;12(3):91-93. Epub 2015 Jun 20.

Department of Cardiology and Cardiothoracic Surgery, Freeman Hospital, Newcastle Upon Tyne, United Kingdom.

In this case report, we describe the implant of a transvenous implantable cardioverter-defibrillator lead on the left ventricular epicardial surface of a young patient with Ebstein's anomaly, facilitating effective defibrillation and anti-tachycardia pacing. The difficulties of conventional placement in Ebstein's malformation as well as the technique and outcome of epicardial lead implantation of a transvenous defibrillator-pacer system are discussed. < This case report highlights the possible placement of a conventional transvenous defibrillator lead on alternative site such as epicardial surface as a solution in patients with Ebstein's anomaly undergoing open heart surgery. Read More

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September 2015

The law of dental implant.

Minerva Stomatol 2018 Dec 14. Epub 2018 Dec 14.

Periodontics and Implantology School of Dentistry and Oral Health, Griffith University, Gold Coast, Queensland, Australia -

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December 2018

Ultrasound shear wave elastography effectively predicts integrity of ventral hernia repair using acellular dermal matrix augmented with platelet-rich plasma (PRP).

Surg Endosc 2018 Dec 13. Epub 2018 Dec 13.

Department of Electrical and Computer Engineering, Texas A&M University, 309D Wisenbaker Engineering Research Center, College Station, TX, 77843-3128, USA.

Background: Complications of ventral hernia repair (VHR) may be investigated by computed tomography or ultrasound (US) but neither modality gives a quantifiable metric of repair quality short of identifying hernia recurrence. Platelet-rich plasma (PRP), a growth factor-rich autologous blood product, has been shown to improve incorporation of native tissue with bioprosthetics. In this study, we investigate the effect of PRP on the incorporation and mechanical integrity of a non-crosslinked porcine acellular dermal matrix (pADM) in a rodent model of VHR and the correlative ability of ultrasound shear wave elastography (US-SWE) to assess repair quality. Read More

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December 2018

Opening-wedge osteotomies of the distal femur: minor advantages for a biplanar compared to a uniplanar technique.

Knee Surg Sports Traumatol Arthrosc 2018 Dec 13. Epub 2018 Dec 13.

Institute of Biomechanics, Paracelsus Medical University Salzburg, Strubergasse 21, 5020, Salzburg, Austria.

Purpose: Valgus malalignment of the distal femur may be treated with corrective osteotomy. The purpose of this study was to compare the primary stability of a lateral opening-wedge osteotomy (LOWO) using a uniplanar compared to a biplanar technique. A study was carried out to test both surgeries, with both an intact medial cortex and with a deliberate attached cut of the medial cortex simulating a fracture. Read More

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December 2018

The use of bisphosphonates after joint arthroplasty is associated with lower implant revision rate.

Knee Surg Sports Traumatol Arthrosc 2018 Dec 13. Epub 2018 Dec 13.

Department of Orthopaedic Surgery, Seoul National University College of Medicine, 101 Daehak-ro, Jongno-gu, Seoul, 110-744, South Korea.

Purpose: This study hypothesized that the use of bisphosphonates (BPs) after total joint arthroplasty (TJA) is associated with a lower implant revision rate. This study aimed (1) to investigate the association between BP use and the revision rate of TJA and (2) to determine the relationship between the medication period and the revision rate of TJA.

Methods: National Health Insurance Service data on surgeries, medications, diagnoses, and screenings of 50 million Koreans were reviewed. Read More

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December 2018

Fulfillment of expectations influence patient satisfaction 5 years after total knee arthroplasty.

Knee Surg Sports Traumatol Arthrosc 2018 Dec 13. Epub 2018 Dec 13.

Department for Orthopaedic and Trauma Surgery, University Medicine Carl Gustav Carus, Fetscherstr. 74, 01307, Dresden, Germany.

Purpose: Constant efforts have been made to improve prosthesis design in total knee arthroplasty (TKA), but a significant number of patients remain dissatisfied postoperatively. Besides poor improvement in pain or function, poor fulfillment of patients expectations were identified as contributing factors. Purpose of the study was to assess fulfillment of patients' expectations and satisfaction with TKA 5 years after surgery. Read More

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December 2018
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Response to "Bacterial Adhesion and Biofilm Formation on Textured Breast Implant Shell Materials".

Authors:
Yara Bachour

Aesthetic Plast Surg 2018 Dec 13. Epub 2018 Dec 13.

Department of Plastic, Reconstructive and Hand Surgery, VU University Medical Center, De Boelelaan 1117, PO Box 7057, 1007 MB, Amsterdam, The Netherlands.

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December 2018

Ginsenoside Rf alleviates dysmenorrhea and inflammation through the BDNF-TrkB-CREB pathway in a rat model of endometriosis.

Food Funct 2018 Dec 14. Epub 2018 Dec 14.

Department of Obstetrics and Gynecology, Shandong University QiLu Hospital, 104 culture west Road, Jinan 250012, Shandong, China.

To investigate the effects and the underlying mechanisms of ginsenoside Rf in a surgically induced rat endometriosis model, endometriosis was constructed through homologous transplantation and the Wistar rats were further randomly classified into the sham group, the estradiol valerate (E2V) control group, the endometriosis group, and the ginsenoside Rf groups (1.0, 2.0 and 4. Read More

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December 2018

Comparison of implant survivability in primary 1- to 2-level lumbar fusion amongst opioid abusers and non-opioid abusers.

J Spine Surg 2018 Sep;4(3):568-574

Department of Neurological Surgery, University of Miami Miller School of Medicine, Miami, FL, USA.

Background: Primary lumbar fusion (LF) is a treatment option for degenerative disc disease. The literature is limited regarding postoperative complications in opioid abusers undergoing LF. The purpose of this study was to compare 2-year short term implant-related complications, infection rates, 90-day readmission rates, in-hospital length of stay, and cost of care amongst opioid abusers (OAS) and non-opioid abusers (NAS) undergoing primary 1- to 2-level primary lumbar fusion (1-2LF). Read More

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September 2018

Early term effects of rhBMP-2 on pedicle screw fixation in a sheep model: histomorphometric and biomechanical analyses.

J Spine Surg 2018 Sep;4(3):534-545

Orthopaedic & Rehabilitation Engineering Center and Graduate Program in Dental Biomaterials, Marquette University, Milwaukee, WI, USA.

Background: The effects of recombinant human bone morphogenetic protein-2 (rhBMP-2) on pedicle screw pullout force and its potential to improve spinal fixation have not previously been investigated. rhBMP-2 on an absorbable collagen sponge (ACS) carrier was delivered in and around cannulated and fenestrated pedicle screws in a sheep lumbar spine instability model. Two control groups (empty screw and ACS with buffer) were also evaluated. Read More

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September 2018

Foreign Body Reaction Associated With Artificial LARS Ligaments: A Retrieval Study.

Orthop J Sports Med 2018 Dec 4;6(12):2325967118811604. Epub 2018 Dec 4.

St John of God Hospital, Subiaco, Perth, Australia.

Background: Artificial ligaments have been developed and used in the treatment of ligamentous injuries since the 1970s. The early generation of artificial ligaments showed promising short-term results but resulted in high rates of rupture and inflammatory reaction in the surrounding tissues.

Purpose: To determine whether the use of Ligament Augmentation and Reconstruction System (LARS) ligaments is associated with the development of intra-articular foreign body reaction. Read More

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December 2018

Frequent activating STAT3 mutations and novel recurrent genomic abnormalities detected in breast implant-associated anaplastic large cell lymphoma.

Oncotarget 2018 Nov 16;9(90):36126-36136. Epub 2018 Nov 16.

Department of Pathology, Peter MacCallum Cancer Centre, Melbourne, VIC, Australia.

Breast implant-associated anaplastic large cell lymphoma (BIA-ALCL) is a rare form of T-cell lymphoma that occurs after implantation of breast prostheses. We performed comprehensive next generation sequencing based genomic characterization of 11 cases of BIA-ALCL including sequence variant detection on 180 genes frequently mutated in haematological malignancy, genome-wide copy number assessment, structural variant detection involving the T-cell receptor loci and TRB deep-sequencing. We observed sequence variants leading to JAK/STAT activation in 10 out of 11 patients. Read More

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November 2018

Anchorage possibilities in case of a unilateral maxillary defect using the concept of Strategic Implant.

Natl J Maxillofac Surg 2018 Jul-Dec;9(2):235-239

Reg-Med Dental Clinic, Rzeszowska, Zary, Poland.

The aim of this article was to present the treatment method applied to a patient who suffered from a multiple fracture of the right maxilla, as a result of an accident that happened to him at an early age. The main consequence of this injury was an inhibited growth of the maxillary bone segment due to the lack of functional stimulus. The treatment consisted of four phases: the removal of all the teeth in the upper right maxilla, the immediate restoration with bicortical implants, the immediate prosthetic rehabilitation, and closing the oroantral communication. Read More

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December 2018
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Comparison of stability with two-time use of platelet-rich growth factor versus one-time use of platelet-rich growth factor in immediate placement of dental implant in infected socket.

Natl J Maxillofac Surg 2018 Jul-Dec;9(2):209-214

Department of Prosthodontics, Crowns and Bridges, King George's Medical University, Lucknow, Uttar Pradesh, India.

Purpose: The aim is to evaluate the outcome and compare the stability with two-time use of platelet-rich growth factor (PRGF) versus one-time use of PRGF in immediate placement of dental implant in infected socket.

Materials And Methods: This study comprised placement of immediate implant in infected sockets in 100 patients with two-time use of PRGF (Group B) versus one-time use of PRGF (Group A). Proper administration of antibiotics, careful debridement of the socket, and meticulous suturing were done in every case. Read More

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December 2018

Minimally invasive transgingival implant therapy: A literature review.

Natl J Maxillofac Surg 2018 Jul-Dec;9(2):117-122

Department of Periodontology, Faculty of Dental Sciences, King George's Medical University, Lucknow, Uttar Pradesh, India.

Transgingival (flapless) implant placement procedure is a minimally invasive surgical technique in which implant is placed without reflecting mucoperiosteal flap and hence the blood supply of bone is not hampered which is advantageous in many ways. To compare the outcomes of various implant placement techniques, an electronic database of various journals from January 1990 to March 2017 were analyzed and only human clinical trials with 6 months follow-up and at least five implants in each group were reviewed. The present literature review focuses on the comparative aspects of flapped versus flapless implants in terms of their survival, marginal bone loss, soft-tissue parameters, and patient-centered outcomes. Read More

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December 2018

Ex-vivo and in vitro validation of an innovative mandibular condyle implant concept.

J Craniomaxillofac Surg 2018 Nov 16. Epub 2018 Nov 16.

University of Bordeaux, Institut de Mécanique et d'Ingénierie, CNRS UMR 5295, FR-33405 Talence, France.

Purpose: The purpose of this study is to pre-validate an inovative implant concept, and to compare the behavior of the mandibular condyle against a commercial Biomet implant in an ex vivo model and present results of the first cadaveric studies.

Materials And Methods: Three experimental cadaveric condyles were tested under three conditions: one intact, another with the Biomet model, and one with the innovative concept. The condyle was tested with a reaction of 300 N in all situations and the principal strains were measured. Read More

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November 2018

Poor relationship between frontal tibiofemoral and trochlear anatomic parameters: Implications for designing a trochlea for kinematic alignment.

Knee 2018 Dec 10. Epub 2018 Dec 10.

MSK Lab, Imperial College London, Charing Cross Campus, Laboratory Block, London W6 8RP, United Kingdom of Great Britain and Northern Ireland; South West London Elective Orthopaedic Center, Dorking Rd, Epsom KT18 7EG, United Kingdom of Great Britain and Northern Ireland. Electronic address:

Background: The kinematic alignment (KA) technique for total knee arthroplasty (TKA) is an emerging implant positioning philosophy that aims to restore constitutional knee anatomy to improve knee kinematics. At present, the KA technique aims to reconstruct native femorotibial (FT) joint alignment, however there is still insufficient consideration towards the inter-individual trochlear anatomy variability. Poor trochlear restoration may compromise clinical outcomes. Read More

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December 2018

Serum Metal Ion Levels in Cementless Metal-On-Metal Total Hip Arthroplasty: Long-Term Follow-Up Trends.

J Arthroplasty 2018 Nov 20. Epub 2018 Nov 20.

Department of Orthopedic Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.

Background: Long-term trends in serum metal ion concentration after metal-on-metal (MoM) total hip arthroplasty (THA) are unclear. In most studies, serum metal ion levels increase initially and remain constant during follow-up. However, there are no previous studies that evaluate the metal ion level longitudinally at multiple intervals over the long term. Read More

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November 2018

Influence of radiotherapy on immediate breast reconstruction after skin-sparing mastectomy. Before or after: Does it matter?

Cir Esp 2018 Dec 10. Epub 2018 Dec 10.

Profesor titular, Universidad de Zaragoza, jefe Unidad de Mama, Hospital Clínico Universitario Lozano Blesa, Zaragoza, España.

Introduction: The use of bilateral mastectomy with immediate reconstruction is increasing. Radiotherapy increases complications; however, its uses have been extended. We evaluate the profile of the complications and long-term failure of reconstruction through a comparative analysis with a cohort without radiotherapy. Read More

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December 2018

T-plate fixation for unstable proximal clavicula fractures.

Acta Orthop Traumatol Turc 2018 Dec 11. Epub 2018 Dec 11.

Department of Orthopaedics, Ningbo, People's Republic of China.

Objective: The aim of this study was to evaluate the clinical results of T-plate fixation and anterior sternoclavicular ligament repair in proximal clavicle fractures.

Methods: Between August 2013 and August 2016, a total 12 patients (10 men and 2 women; mean age: 44.1 ± 9. Read More

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December 2018

The Option of Motion Preservation in Cervical Spondylosis: Cervical Disc Arthroplasty Update.

Neurospine 2018 Dec 14. Epub 2018 Dec 14.

Department of Neurosurgery, University of California, San Francisco, San Francisco, CA, USA.

Cervical disc arthroplasty (CDA), or total disc replacement, has emerged as an option in the past two decades for the management of 1- and 2-level cervical disc herniation and spondylosis causing radiculopathy, myelopathy, or both. Multiple prospective randomized controlled trials have demonstrated CDA to be as safe and effective as anterior cervical discectomy and fusion, which has been the standard of care for decades. Moreover, CDA successfully preserved segmental mobility in the majority of surgical levels for 5-10 years. Read More

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December 2018

Analysis of Trauma Intensity during Surgical Bone Procedures Using NF-κB Expression Levels as a Stress Sensor: An Experimental Study in a Wistar Rat Model.

Materials (Basel) 2018 Dec 12;11(12). Epub 2018 Dec 12.

Department of Biotechnology, Biotecnos-Technology and Science, Cuareim 1483, Montevideo, Canelones 11100, Uruguay.

It is well known that the transcription factor NF-κB regulates multiple aspects of innate and adaptive immune functions and functions as a pivotal mediator of inflammatory responses. In the present study, we evaluated the trauma generated (inflammatory reaction) after osteotomy bone surgical procedures and placement of implants in the femoral cortical bone of Wistar rats. Surgical stress was evaluated measuring the release and activation of the NF-κB factor. Read More

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December 2018

Bioactive Glasses and Glass-Ceramics for Healthcare Applications in Bone Regeneration and Tissue Engineering.

Materials (Basel) 2018 Dec 12;11(12). Epub 2018 Dec 12.

Department of Materials and Ceramic Engineering, CICECO, University of Aveiro, 3810-193 Aveiro, Portugal.

The discovery of bioactive glasses (BGs) in the late 1960s by Larry Hench et al. was driven by the need for implant materials with an ability to bond to living tissues, which were intended to replace inert metal and plastic implants that were not well tolerated by the body. Among a number of tested compositions, the one that later became designated by the well-known trademark of 45S5 Bioglass excelled in its ability to bond to bone and soft tissues. Read More

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December 2018

Are Edentulousness, Oral Health Problems and Poor Health-Related Quality of Life Associated with Malnutrition in Community-Dwelling Elderly (Aged 75 Years and Over)? A Cross-Sectional Study.

Nutrients 2018 Dec 12;10(12). Epub 2018 Dec 12.

Department of Oral and Maxillofacial Surgery, University of Groningen, University Medical Center Groningen, 9700 RB Groningen, The Netherlands.

As the population ages, the risk of becoming malnourished increases. Research has shown that poor oral health can be a risk factor for malnutrition in institutionalized elderly. However, it remains unclear whether oral health problems, edentulousness and health-related quality of life also pose a risk for malnutrition in community-dwelling older adults. Read More

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December 2018