keyword
MENU ▼
Read by QxMD icon Read
search

Loading on long bones

keyword
https://www.readbyqxmd.com/read/28081288/short-dental-implants-6-mm-versus-long-dental-implants-11-15-mm-in-combination-with-sinus-floor-elevation-procedures-3-year-results-from-a-multi-center-randomized-controlled-clinical-trial
#1
Veronika Pohl, Daniel S Thoma, Katarzyna Sporniak-Tutak, Abel Garcia-Garcia, Thomas D Taylor, Robert Haas, Christoph H F Hämmerle
AIM: To test whether or not the use of short dental implants (6 mm) results in an implant survival rate similar to that with longer implants (11-15 mm) in combination with sinus grafting. METHODS: This multi-center study enrolled 101 patients with partial edentulism in the posterior maxilla and a remaining bone height of 5-7 mm. Included patients were randomly assigned to receive short implants (6 mm; GS / group short) or long implants (11-15 mm) simultaneously with sinus grafting (GG / group graft)...
January 12, 2017: Journal of Clinical Periodontology
https://www.readbyqxmd.com/read/28073075/freeform-extrusion-fabrication-of-titanium-fiber-reinforced-13-93-bioactive-glass-scaffolds
#2
Albin Thomas, Krishna C R Kolan, Ming C Leu, Gregory E Hilmas
Although implants made with bioactive glass have shown promising results for bone repair, their application in repairing load-bearing long bone is limited due to their poor mechanical properties in comparison to human bone. This work investigates the freeform extrusion fabrication of bioactive silicate 13-93 glass scaffolds reinforced with titanium (Ti) fibers. A composite paste prepared with 13-93 glass and Ti fibers (~16µm in diameter and lengths varying from ~200µm to ~2 mm) was extruded through a nozzle to fabricate scaffolds (0-90° filament orientation pattern) on a heated plate...
December 31, 2016: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/28071641/epidemiological-data-and-case-load-spectrum-of-patients-presenting-to-bone-and-soft-tissue-disease-management-group-at-a-tertiary-cancer-center
#3
A Gulia, A Puri, S Chorge, P K Panda
INTRODUCTION AND BACKGROUND: This study was conducted to know the spectrum and number of bone and soft tissue (BST) tumors presenting to our institute. We needed to assess the gap between the number of patients seen and infrastructure available, and based on this information, help formulate guidelines for optimum utilization of resources and to provide best possible evidence-based cancer care. SETTINGS AND DESIGNS: This is a prospective observational study (epidemiological)...
April 2016: Indian Journal of Cancer
https://www.readbyqxmd.com/read/28057631/ultimate-fracture-load-of-cadaver-proximal-humeri-correlates-more-strongly-with-mean-combined-cortical-thickness-than-with-areal-cortical-index-dexa-density-or-canal-to-calcar-ratio
#4
J G Skedros, C S Mears, W Z Burkhead
OBJECTIVES: This investigation sought to advance the work published in our prior biomechanical study (Journal of Orthopaedic Research, 2016). We specifically sought to determine whether there are additional easy-to-measure parameters on plain radiographs of the proximal humerus that correlate more strongly with ultimate fracture load, and whether a parameter resembling the Dorr strength/quality characterisation of proximal femurs can be applied to humeri. MATERIALS AND METHODS: A total of 33 adult humeri were used from a previous study where we quantified bone mineral density of the proximal humerus using radiographs and dual-energy x-ray absorptiometry (DEXA), and regional mean cortical thickness and cortical index using radiographs...
January 2017: Bone & Joint Research
https://www.readbyqxmd.com/read/28054122/-steel-or-titanium-for-osteosynthesis-a%C3%A2-mechanobiological-perspective
#5
M Heyland, G N Duda, S Märdian, M Schütz, M Windolf
BACKGROUND: An implant used for stabilizing a fracture creates a mechanical construct, which directly determines the biology of bone healing. The stabilization of fractures places high mechanical demands on implants and therefore steel and titanium are currently almost exclusively used as the materials of choice. OBJECTIVES: The possible range of attainable mechanobiological stimulation for mechanotherapy as a function of plate stiffness depending on the selection of the plate material and the physical and mechanical properties of the material options are discussed...
January 4, 2017: Der Unfallchirurg
https://www.readbyqxmd.com/read/28053382/a-novel-adjustable-dynamic-plate-for-treatment-of-long-bone-fractures-an-in-vitro-biomechanical-study
#6
Ahmet Karakasli, Nihat Acar, Ahmet Karaarslan, Fatih Ertem, Hasan Havitcioglu
INTRODUCTION: Locking compression plate (LCP) system was designed to provide bone stability and to enhance bone healing. However, implant failure, nonunion and instability are still frequently encountered complications. The purpose of this study was to assess and compare the biomechanical characteristics of a novel adjustable dynamic plate (ADP) with the commonly used LCP. MATERIALS AND METHODS: Twelve 4th generation composite artificial femoral bones were used...
October 2016: Journal of Clinical Orthopaedics and Trauma
https://www.readbyqxmd.com/read/28050317/association-between-dental-implants-in-the-posterior-region-and-traumatic-occlusion-in-the-adjacent-premolars-a-long-term-follow-up-clinical-and-radiographic-analysis
#7
Jae-Hong Lee, Helen Hye-In Kweon, Seong-Ho Choi, Young-Taek Kim
PURPOSE: The aim of this retrospective study was to determine the association between dental implants in the posterior region and traumatic occlusion in the adjacent premolars, using data collected during from 2002 to 2015. METHODS: Traumatic occlusion in the adjacent premolars was assessed by examining clinical parameters (bleeding on probing, probing pocket depth, fremitus, and tooth mobility) and radiographic parameters (loss of supporting bone and widening of the periodontal ligament space) over a mean follow-up of 5 years...
December 2016: Journal of Periodontal & Implant Science
https://www.readbyqxmd.com/read/28009160/lead-free-piezoelectric-ba-ca-zr-ti-o3-thin-films-for-biocompatible-and-flexible-devices
#8
N D Scarisoreanu, F Craciun, V Ion, R Birjega, A Bercea, V Dinca, M Dinescu, L E Sima, M Icriverzi, A Roseanu, L Gruionu, G Gruionu
In this work, we report the synthesis of functional biocompatible piezoelectric (1 - x)Ba(Ti0.8Zr0.2)TiO3-x(Ba0.7Ca0.3)TiO3, x = 0.45 (BCZT45), thin films with high piezoelectric properties. Pulsed-laser-based techniques, classical pulsed-laser deposition and matrix-assisted pulsed-laser evaporation, were used to synthesize the BCZT45 thin films. The second technique was employed in order to ensure growth on polymer flexible Kapton substrates. The BCZT45 thin films grown by both techniques show similar structural properties and high piezoelectric coefficient coupling between the mechanical loading and electrical potential...
December 23, 2016: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28005801/zygomatic-implant-subjected-to-immediate-loading-for-atrophic-maxilla-rehabilitation
#9
Pâmela Letícia Dos Santos, Gustavo Henrique Souza Silva, Fernanda Rayssa Da Silva Pereira, Raquel Damazia da Silva, Mirella Lindoso Gomes Campos, Thiago Borges Mattos, Jéssica Lemos Gulinelli
As life expectancy increases, a larger number of elderly people require dental health care attention for implant-supported rehabilitation, with the aim of restoring the function and aesthetics of the oral cavity. Most of these patients have lost their teeth long time ago, causing a severe bone resorption and maxillary sinus pneumatization. Therefore, the current study aims to demonstrate, through the description of the clinical case, the treatment with zygomatic implants as an option for treating severely atrophic maxillas...
November 2016: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28005657/influence-of-orbital-implant-length-and-diameter-on-stress-distribution-a-finite-element-analysis
#10
Zhang Xing, Ling Song Chen, Wei Peng, Ling Jian Chen
PURPOSE: A mathematical simulation of stress distribution around orbital implants was used to determine which length and diameter of implants would be best to dissipate stress. METHODS: An integrated system for computed tomography data was utilized to create a 3-dimensional model of craniofacial structures. The model simulated implants placed in the 7, 11, and 12 o'clock positions of the orbital rim. A load of 2 N was applied to the model along the long axis of the implant (model 1) and an angle of 45° with the long axis of the implant (model 2)...
December 21, 2016: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28000269/implant-surface-roughness-and-patient-factors-on-long-term-peri-implant-bone-loss
#11
REVIEW
Hugo De Bruyn, Véronique Christiaens, Ron Doornewaard, Magnus Jacobsson, Jan Cosyn, Wolfgang Jacquet, Stijn Vervaeke
Dental implant placement is a common treatment procedure in current dental practice. High implant survival rates as well as limited peri-implant bone loss has been achieved over the past decades due to continuous modifications of implant design and surface topography. Since the turn of the millennium, implant surface modifications have focused on stronger and faster bone healing. This has not only yielded higher implant survival rates but also allowed modifications in surgical as well as prosthetic treatment protocols such as immediate implant placement and immediate loading...
February 2017: Periodontology 2000
https://www.readbyqxmd.com/read/27990507/four-mm-long-versus-longer-implants-in-augmented-bone-in-atrophic-posterior-jaws-4-month-post-loading-results-from-a-multicentre-randomised-controlled-trial
#12
Marco Esposito, Giovanni Zucchelli, Carlo Barausse, Roberto Pistilli, Anna Trullenque-Eriksson, Pietro Felice
PURPOSE: To evaluate whether 4-mm long dental implants could be an alternative to augmentation with equine bone blocks and the placement of at least 10-mm long implants in atrophic posterior jaws. MATERIALS AND METHODS: Forty patients with atrophic posterior (premolar and molar areas) mandibles having 5 to 6 mm bone height above the mandibular canal and 40 patients with atrophic maxillae having 4 to 5 mm below the maxillary sinus, were randomised according to a parallel group design to receive one to three 4...
2016: European Journal of Oral Implantology
https://www.readbyqxmd.com/read/27990504/the-clinical-value-of-membranes-in-bone-augmentation-procedures-in-oral-implantology-%C3%A2-a-systematic-review-of-randomised-controlled-trials
#13
Brend P Jonker, Maarten W K Roeloffs, Eppo B Wolvius, Justin Pijpe
PURPOSE: To determine the clinical value of membranes in bone augmentation procedures such as ridge augmentation with simultaneous (one-stage) and delayed (two-stage) implant placement, sinus augmentation surgery, ridge preservation and immediate implant placement. MATERIALS AND METHODS: In April 2016, Embase, Medline (Ovid-SP), Cochrane Central, Web of Science and PubMed (as supplied by the publisher) were searched. There were no restrictions regarding language or publication date...
2016: European Journal of Oral Implantology
https://www.readbyqxmd.com/read/27984825/colloid-adhesive-and-release-properties-of-nanoparticular-ternary-complexes-between-cationic-and-anionic-polysaccharides-and-basic-proteins-like-bone-morphogenetic-protein-bmp-2
#14
R Petzold, D Vehlow, B Urban, A L Grab, E A Cavalcanti-Adam, V Alt, M Müller
Herein we describe an interfacial local drug delivery system for bone morphogenetic protein 2 (BMP-2) based on coatings of polyelectrolyte complex (PEC) nanoparticles (NP). The application horizon is the functionalization of bone substituting materials (BSM) used for the therapy of systemic bone diseases. Nanoparticular ternary complexes of cationic and anionic polysaccharides and BMP-2 or two further model proteins, respectively, were prepared in dependence of the molar mixing ratio, pH value and of the cationic polysaccharide...
November 24, 2016: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/27982194/histologic-and-tomographic-findings-of-bone-block-allografts-in-a-4-years-follow-up-a-case-series
#15
Daniel Deluiz, Luciano Santos Oliveira, Paul Fletcher, Fábio Ramôa Pires, Justine Monnerat Tinoco, Eduardo Muniz Barretto Tinoco
The aim of this paper is to report histologic and tomographic findings of fresh frozen bone block allografts bearing dental implants in functional occlusion in a long-term follow-up. Four patients with implants functionally loaded for 4 years on augmented ridges requiring additional mucogingival surgery or implant placement were included in this case series. Cone-beam tomography scans were compared volumetrically between the baseline (first implant placement) and current images. Biopsies of the grafts were retrieved and sent to histological analysis...
October 2016: Brazilian Dental Journal
https://www.readbyqxmd.com/read/27981526/molecular-mechanisms-in-bone-mechanotransduction
#16
REVIEW
Marta Maycas, Pedro Esbrit, Arancha R Gortázar
Bone is one of the most adaptable tissues in the body as it is continuously subjected to load bearing. In fact, mechanical loading is an important regulator of bone mass. The skeleton adjusts to load by changing its mass, shape and microarchitecture, depending on the magnitude of the strain. Mechanical stimulation is necessary for the development of the skeleton, whereas in adults physiological levels of strain help maintain bone mass by reducing bone resorption. On the other hand, an excessive level of strain or bone disuse induces bone loss...
December 16, 2016: Histology and Histopathology
https://www.readbyqxmd.com/read/27977820/immediate-loading-of-single-implants-a-2-year-prospective-multicenter-study
#17
Carlo Mangano, Filiep Raes, Carolina Lenzi, Tammaro Eccellente, Michele Ortolani, Giuseppe Luongo, Francesco Mangano
The aim of this prospective multicenter study was to evaluate the outcomes of single implants subjected to immediate functional loading. Inclusion criteria were single-tooth placement in postextraction sockets or fully healed sites, and sufficient bone height and width to place an implant of at least 3.5 × 10.0 mm. All implants were functionally loaded immediately after placement and followed for 2 years. Outcome measures were implant survival, complications, and peri-implant marginal bone loss (MBL). A total of 57 implants (38 maxilla, 19 mandible) were placed in 46 patients (23 men, 23 women, aged 18-73 years)...
January 2017: International Journal of Periodontics & Restorative Dentistry
https://www.readbyqxmd.com/read/27918747/segmental-sandwich-osteotomy-of-the-posterior-mandible-in-pre-implant-surgery-a-systematic-review
#18
G Kamperos, I Zografos, F Tzermpos, I Iatrou
BACKGROUND: The rehabilitation of the atrophic posterior mandible with dental implants often requires bone augmentation procedures. The aim of the present study is the systematic review of the literature concerning the success rate of Segmental Sandwich Osteotomy (SSO) of the posterior mandible in pre-implant surgery. MATERIAL AND METHODS: Systematic review of all clinical cases and clinical studies of SSO of the posterior mandible in pre-implant surgery with a minimum follow-up of 6 months after implant loading was performed, based on specific inclusion and exclusion criteria...
January 1, 2017: Medicina Oral, Patología Oral y Cirugía Bucal
https://www.readbyqxmd.com/read/27912753/radiographic-evaluation-of-early-periprosthetic-acetabular-bone-contrast-and-prosthetic-head-acetabular-coverage-after-uncemented-and-cemented-total-hip-prosthesis-in-dogs
#19
Ayman A Mostafa, Karin Lucas, Ingo Nolte, Patrick Wefstaedt
BACKGROUND: Coxofemoral osteoarthritis is a chronic, disabling condition affecting people and dogs, with THA providing an excellent return to function in severely affected joints. The principal role of THA is to restore an adequate range of motion to the hip joint while transferring load from the acetabulum in order to improve the survival of the implant and enhance the limb function in the short and long terms. The objectives of the study reported here were, therefore, to radiographically evaluate periprosthetic acetabular bone GV and to assess prosthetic head acetabular coverage after 4 months of uncemented and cemented THA in dogs...
December 3, 2016: BMC Veterinary Research
https://www.readbyqxmd.com/read/27903837/the-effect-of-army-vest-design-on-the-occurrence-of-stress-fractures-and-overuse-injuries-in-female-military-recruits
#20
Ezequiel Palmanovich, M Frankl, M Nyska, I Hetsroni, N Constantini, L Trejo, R Bechar, G Novak, Z Lankovsky, G Mann
INTRODUCTION: Stress fractures (SFs) occur when microdamage caused by repetitive mechanical load exceeds the biological load-bearing capacity of the bone. The study objective was to test whether a vest specifically designed and manufactured for female recruits, compared with the standard vest used on a regular basis by Border Police recruits, would reduce the incidence of SF in female Border Police recruits. Data based on reports of military personnel show that women are more likely to sustain SFs...
November 30, 2016: Journal of the Royal Army Medical Corps
keyword
keyword
32793
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"