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https://www.readbyqxmd.com/read/29451939/reverse-shoulder-arthroplasty-in-the-weight-bearing-versus-non-weight-bearing-shoulder-mid-term-outcomes-with-minimum-5-year-follow-up
#1
Derek J Cuff, Brandon G Santoni
This retrospective review evaluated the mid-term outcomes of cemented reverse shoulder arthroplasty in patients who use the shoulder for weight bearing (WB) vs non-weight-bearing (NWB) patients. Twenty-five shoulders of 21 patients who used their upper extremity for WB (WB group) were treated with cemented reverse shoulder arthroplasty and followed for a minimum of 5 years postoperatively (average, 73 months). Seventy-five consecutive shoulders of 72 patients who were NWB (NWB group) were treated and matched for duration of follow-up (average, 72 months) to serve as a control group...
February 16, 2018: Orthopedics
https://www.readbyqxmd.com/read/29451931/nonsurgical-management-of-peri-implant-bone-loss-induced-by-residual-cement-retrospective-analysis-of-six-cases
#2
Emanuele De Martinis Terra, Marco Berardini, Paolo Trisi
This report presents six consecutive cases of peri-implantitis associated with residual methacrylate cement. The cases responded to cement removal and disinfection procedures. Six patients, each presenting one methacrylate cement-retained implant restoration and showing peri-implant inflammation and bone loss, were treated. All the cases were negative for bleeding on probing after 6 weeks, and this was maintained at 1 year of follow-up from nonsurgical therapy and crown refixation with alternative and resorbable cement...
February 16, 2018: International Journal of Periodontics & Restorative Dentistry
https://www.readbyqxmd.com/read/29451649/the-effects-of-different-restorative-materials-on-periodontopathogens-in-combined-restorative-periodontal-treatment
#3
Sila Çagri Isler, Gonen Ozcan, Gülcin Akca, Zahide Kocabas
Objective The aim of the study was to evaluate the association between subgingival restorations and the target periodontopathogenic bacteria (Pg, Td and Pi) in subgingival biofilm during one year after combined restorative-periodontal treatment. Material and Methods Seventeen systemically healthy subjects, who were positive for the presence of three cervical lesions associated with gingival recessions in three different adjacent teeth, were included in the study. A total of 51 combined defects were treated with connective tissue graft plus a nanofilled composite resin (NCR+CTG), a resin-modified glass ionemer cement (RMGI+CTG) and a fluoride-releasing resin material with pre-reacted glass (PRG), called giomer (Giomer+CTG)...
2018: Journal of Applied Oral Science: Revista FOB
https://www.readbyqxmd.com/read/29448880/migration-and-clinical-outcome-of-mobile-bearing-versus-fixed-bearing-single-radius-total-knee-arthroplasty
#4
Koen T Van Hamersveld, Perla J Marang-Van De Mheen, Huub J L Van Der Heide, Henrica M J Van Der Linden-Van Der Zwaag, Edward R Valstar, Rob G H H Nelissen
Background and purpose - Mobile-bearing total knee prostheses (TKPs) were developed in the 1970s in an attempt to increase function and improve implant longevity. However, modern fixed-bearing designs like the single-radius TKP may provide similar advantages. We compared tibial component migration measured with radiostereometric analysis (RSA) and clinical outcome of otherwise similarly designed cemented fixed-bearing and mobile-bearing single-radius TKPs. Patients and methods - RSA measurements and clinical scores were assessed in 46 randomized patients at baseline, 6 months, 1 year, and annually thereafter up to 6 years postoperatively...
February 16, 2018: Acta Orthopaedica
https://www.readbyqxmd.com/read/29448759/multi-c-bn-coatings-by-r-f-diode-sputtering-and-investigation-of-wear-behavior
#5
Sung-Tae Park, Jeon-Geon Han, M Keunecke
Cubic boron nitride (c-BN) films on tool substrates are tendency to delaminate. Therefore, many research groups have studied improvement of c-BN synthesis method and deposition processes due to many potential applications. In this paper, we show that the adhesion property of c-BN layer system can be improved by deposing multi c-BN layers. The multi c-BN layers were deposited by r.f (13.56 MHz) diode sputtering apparatus on cemented carbide tool substrates with a TiAlN adhesion layer. For industrial applications, we performed turning and milling experiments under dry and high speed cutting conditions...
March 1, 2018: Journal of Nanoscience and Nanotechnology
https://www.readbyqxmd.com/read/29448144/nanocements-produced-from-mesoporous-bioactive-glass-nanoparticles
#6
Min Sil Kang, Na-Hyun Lee, Rajendra K Singh, Nandin Mandakhbayar, Roman A Perez, Jung-Hwan Lee, Hae-Won Kim
Biomedical cements are considered promising injectable materials for bone repair and regeneration. Calcium phosphate composition sized with tens of micrometers is currently one of the major powder forms. Here we report a unique cement form made from mesoporous bioactive glass nanoparticles (BGn). The nanopowder could harden in reaction with aqueous solution at powder-to-liquid ratios as low as 0.4-0.5 (vs. 2.0-3.0 for conventional calcium phosphate cement CPC). The cementation mechanism investigated from TEM, XRD, FT-IR, XPS, and NMR analyses was demonstrated to be the ionic (Si and Ca) dissolution and then reprecipitation to form Si-Ca-(P) based amorphous nano-islands that could network the particles...
February 3, 2018: Biomaterials
https://www.readbyqxmd.com/read/29447310/retrospective-evaluation-of-factors-related-to-the-outcomes-of-regenerative-therapy-for-implants-affected-by-peri-implantitis
#7
Stuart J Froum, Paul S Rosen, Wendy Cw Wang, Scott H Froum, Shalin Vinayak
The aim of this retrospective study was to examine the histories of 100 patients with 170 implants that were consecutively treated and reported in a previous study to identify which patient and implant factors might have affected the outcomes of therapy. Patient factors included history of periodontitis, hypertension, cardiac problems, rheumatoid arthritis, smoking, and penicillin allergy. Implant factors included whether the prosthesis was cemented or screw retained and initial bone loss (≤ 50% or > 50% of implant length)...
March 2018: International Journal of Periodontics & Restorative Dentistry
https://www.readbyqxmd.com/read/29446542/novel-calcitonin-gene-related-peptide-chitosan-strontium-calcium-phosphate-cement-enhanced-proliferation-of-human-umbilical-vein-endothelial-cells-in-vitro
#8
Tiancheng Lv, Wei Liang, Li Li, Xu Cui, Xiaomou Wei, Haobo Pan, Bing Li
Bone cement materials have some disadvantages, including slow degradation and no biological activity, which greatly weakens their clinical application. Therefore, the search for a multifunctional bioactive bone cement has become urgent. In this study, a novel bone cement sample of calcitonin gene-related peptide (CGRP)/chitosan-strontium (Sr)-calcium phosphate cement (CPC) was developed. The structure and morphology were observed by scanning electron microscope (SEM). The cytotoxicity and proliferation of CGRP/chitosan-Sr-CPC were also measured...
February 15, 2018: Journal of Biomedical Materials Research. Part B, Applied Biomaterials
https://www.readbyqxmd.com/read/29445960/is-percutaneous-kyphoplasty-the-better-choice-for-minimally-invasive-treatment-of-neurologically-intact-osteoporotic-k%C3%A3-mmell-s-disease-a-comparison-of-two-minimally-invasive-procedures
#9
JiaNan Zhang, Yong Fan, Xin He, YiBin Meng, YunFei Huang, ShuaiJun Jia, JinPeng Du, QiNing Wu, DingJun Hao
PURPOSE: The purpose of this study was to compare and evaluate the safety and efficacy of percutaneous vertebroplasty at a hyperextension position (PVPHP) and percutaneous kyphoplasty at a hyperextension position (PKPHP) for the treatment of osteoporotic Kümmell's disease. METHODS: This study was a retrospective, single-centre study. There were 35 patients with osteoporotic Kümmell's disease who were analyzed. Twenty-two of them underwent PVPHP and the other 13 patients underwent PKPHP from January 2013 to January 2015...
February 14, 2018: International Orthopaedics
https://www.readbyqxmd.com/read/29444963/parapedicular-vertebral-augmentation-with-polymethylmetacrylate-for-pedicle-screw-loosening
#10
Olivier Clerk-Lamalice, Zubin Irani, Marion Growney, Douglas P Beall, Joshua A Hirsch
A 71-year-old man who had a L1/S1 posterior fusion revision surgery complained of increasing back pain 5 weeks after the open surgical procedure. The pain was initially estimated at 9/10 on the visual analog scale (VAS) and thought to be related to a right-sided L2 screw loosening. A right parapedicular vertebroplasty was performed and polymethylmethacrylate cement was instilled around the right pedicle screw, filling the anterior two-thirds of the vertebral body. On postvertebroplasty day 1, the patient had significant improvement in his low back pain...
February 14, 2018: Journal of Neurointerventional Surgery
https://www.readbyqxmd.com/read/29443957/bone-cement-augmented-short-segment-pedicle-screw-fixation-for-k%C3%A3-mmell-disease-with-spinal-canal-stenosis
#11
Yan-Sheng Huang, Chao-Yuan Ge, Hang Feng, Hai-Ping Zhang, Xing-Bang Niu, Shao-Yan Shi, Zi-Qi Zhu, Ding-Jun Hao
BACKGROUND This study aimed to explore the feasibility and efficacy of bone cement-augmented short-segmental pedicle screw fixation in treating Kümmell disease. MATERIAL AND METHODS From June 2012 to June 2015, 18 patients with Kümmell disease with spinal canal stenosis were enrolled in this study. Each patient was treated with bone cement-augmented short-segment fixation and posterolateral bone grafting, and posterior decompression was performed when needed. All patients were followed up for 12-36 months...
February 14, 2018: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/29442091/influence-of-light-transmission-through-fiber-posts-quantitative-analysis-microhardness-and-on-bond-strength-of-a-resin-cement
#12
Luís Fernando Dos Santos Alves Morgan, Marcos Barbosa Pinotti, Fernanda Morais Ferreira, Giovana Mongruel Gomes, Guilherme Costa Silva, Rodrigo De Castro Albuquerque, Allyson Nogueira Moreira
Context: Light transmission (LT) into deeper areas of the dentin root is limited. Aim: The aim of this study is to perform a quantitative investigation of the radial transmission of light (LT) through different fiber posts and its influence on the Knoop hardness number (KHN) and bond strength (BS) of a dual-cure self-adhesive resin cement at 3 different depths. Materials and Methods: Four types of fiber posts (2 translucent and 2 conventional) were used...
January 2018: Indian Journal of Dental Research: Official Publication of Indian Society for Dental Research
https://www.readbyqxmd.com/read/29439431/experimental-investigation-of-multi-mode-fiber-laser-cutting-of-cement-mortar
#13
Dongkyoung Lee, Sukhoon Pyo
This study successfully applied multi-mode laser cutting with the variation of the laser cutting speed to cement mortar for the first time. The effects of the amount of silica sand in the cement mortar on laser cutting are tested and analyzed. The kerf width and penetration depth of the specimens after laser cutting are investigated. As the laser cutting speed increases, the penetration depth decreases for both cement paste and cement mortar, whereas the kerf width becomes saturated and increases, respectively, for cement paste and cement mortar...
February 10, 2018: Materials
https://www.readbyqxmd.com/read/29437516/ideal-versus-late-secondary-alveolar-bone-graft-surgery-a-bone-thickness-cone-beam-computed-tomographic-assessment
#14
Michele Alves Garcia, Marilia Yatabe, Thais Ustulin Fuzer, Adriana Maria Calvo, Ivy Kiemle Trindade-Suedam
OBJECTIVE: To compare the bone morphology after secondary alveolar bone graft surgery (SABG) performed before and after permanent canine eruption. DESIGN: Cross-sectional study. SETTING: Hospital for Rehabilitation of Craniofacial Anomalies, University of São Paulo, Bauru, SP, Brazil. PATIENTS: 25 cone-beam computed tomography (CBCT) scans of complete unilateral cleft lip and palate (CLP) individuals who underwent SABG before or after eruption of the permanent canine taken 2 and 6 months (T1 and T2) after SAGB, resulting in 50 CBCT scans...
March 2018: Cleft Palate-craniofacial Journal
https://www.readbyqxmd.com/read/29437070/outcomes-after-extensive-manual-curettage-and-limited-burring-for-atypical-cartilaginous-tumour-of-long-bone
#15
W Kim, J S Lee, H W Chung
AIMS: Adjuvant treatment after intralesional curettage for atypical cartilaginous tumours (ACTs) of long bones is widely accepted for extending surgical margins. However, evaluating the isolated effect of adjuvant treatment is difficult, and it is unclear whether not using such adjuvants provides poor oncological outcomes. Hence, we analyzed whether intralesional curettage without cryosurgery or chemical adjuvants provides poor oncological outcomes in patients with an ACT. PATIENTS AND METHODS: A total of 24 patients (nine men, 15 women) (mean age 45 years; 18 to 62) were treated for ACTs of long bones and followed up for a median of 66 months (interquartile range 50 to 84)...
February 2018: Bone & Joint Journal
https://www.readbyqxmd.com/read/29437058/inducible-displacement-of-cemented-tibial-components-ten-years-after-total-knee-arthroplasty
#16
K Lam Tin Cheung, B A Lanting, R W McCalden, X Yuan, S J MacDonald, D D Naudie, M G Teeter
AIMS: The aim of this study was to evaluate the long-term inducible displacement of cemented tibial components ten years after total knee arthroplasty (TKA). PATIENTS AND METHODS: A total of 15 patients from a previously reported prospective trial of fixation using radiostereometric analysis (RSA) were examined at a mean of 11 years (10 to 11) postoperatively. Longitudinal supine RSA examinations were acquired at one week, one year, and two years postoperatively and at final follow-up...
February 2018: Bone & Joint Journal
https://www.readbyqxmd.com/read/29436969/evaluation-of-effectiveness-of-cement-removal-from-implant-retained-crowns-using-a-proposed-circular-crisscross-flossing-technique
#17
Cimara Fortes Ferreira, Mohamed Amer Shafter, Vinay Jain, Russel Anthony Wicks, Erno Linder, Carlos Alberto da Silva Ledo
BACKGROUND: Extruded cement during dental implant crown cementation may cause peri-implant diseases if not removed adequately. AIM: Evaluate the efficiency of removal of cement after cementation of implant crowns using an experimental "circular crisscross flossing technique (CCCFT) flossing technique, compared to the conventional "C" shape flossing technique (CSFT). MATERIAL AND METHODS: Twenty-four patients rendered 29 experimental and 29 control crowns...
February 13, 2018: Journal of Oral Implantology
https://www.readbyqxmd.com/read/29436942/short-vs-longer-implants-in-mandibular-alveolar-ridge-augmentated-using-osteogenic-distraction-one-year-follow-up-of-a-randomized-split-mouth-trial
#18
Sara Bernardi, Roberto Gatto, Marco Severino, Gianluca Botticelli, Silvia Caruso, Claudio Rastelli, Ettore Lupi, Adolfo Quiroz Rojas, Enzo Iacomino, Giovanni Falisi
Aim of the study was to evaluate the reliability of 6 mm long implants compared to normal length implants placed in vertical augmented atrophic posterior mandible, supporting cemented single crowns. Thirty-six patients with bilateral posterior edentulous mandible and presented a bone availability height less than 9 mm from the mandibular canal were enrolled for the participation to this study. Patient hemi-arches were randomized to receive both 6 mm-long and normal length implants (10 mm). The technique used for the vertical bone augmentation was the "sandwich" technique, using a bone substitute block as graft...
February 13, 2018: Journal of Oral Implantology
https://www.readbyqxmd.com/read/29436559/natural-products-in-endodontics
#19
Ebtissam M Almadi, Amal A Almohaimede
Herbal remedies are used throughout the world, either in earlier or in recent times. The number of studies on this alternative therapeutic system increased in the last decades. In this paper, the relevant literature on the use of natural products in root canal therapy is revised from a MEDLINE database search. The uses of medicinal plants in endodontics include cleaning and disinfection of root canals, intracanal medicaments between appointments, sealer cements, and for removal of obturation material. Other studies showed the effect of natural products in pulpal and dentin repair...
February 2018: Saudi Medical Journal
https://www.readbyqxmd.com/read/29435992/feasibility-and-safety-of-a-cemented-peek-on-pe-knee-replacement-in-a-goat-model-a-preliminary-study
#20
Zhe Du, Zhonglin Zhu, Bing Yue, Zhanchun Li, You Wang
Polyether-ether-ketone (PEEK) is a potential alternative to metal alloys for use in the orthopedic implants; however, an in vivo study in an appropriate animal model is essential and has not yet been initiated. The aim of the present study was to gather some preliminary evidence regarding the performance and safety of a cemented PEEK-based knee replacement device in a goat model. Fifteen adult goats were randomly divided into two groups; the control group (n = 5), which received a sham operation, and the experimental group (n = 10), which received a total knee arthroplasty with a PEEK-based knee replacement device...
February 13, 2018: Artificial Organs
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