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https://www.readbyqxmd.com/read/29245051/magnesium-phosphate-ceramics-incorporating-a-novel-indene-compound-promote-osteoblast-differentiation-in%C3%A2-vitro-and-bone-regeneration-in%C3%A2-vivo
#1
Ju Ang Kim, Hui-Suk Yun, Young-Ae Choi, Jung-Eun Kim, So-Young Choi, Tae-Geon Kwon, Young Kyung Kim, Tae-Yub Kwon, Myung Ae Bae, Nak Jeong Kim, Yong Chul Bae, Hong-In Shin, Eui Kyun Park
Incorporating bioactive molecules into synthetic ceramic scaffolds is challenging. In this study, to enhance bone regeneration, a magnesium phosphate (MgP) ceramic scaffold was incorporated with a novel indene compound, KR-34893. KR-34893 induced the deposition of minerals and expression of osteoblast marker genes in primary human bone marrow mesenchymal stem cells (BMSCs) and a mouse osteoblastic MC3T3-E1 cell line. Analysis of the mode of action showed that KR-34893 induced the phosphorylation of MAPK/extracellular signal-regulated kinase and extracellular signal-regulated kinase, and subsequently the expression of bone morphogenetic protein 7, accompanied by SMAD1/5/8 phosphorylation...
December 7, 2017: Biomaterials
https://www.readbyqxmd.com/read/29244885/effect-of-fiber-post-cementation-timing-on-the-bond-strength-of-resin-cements-in-epoxy-resin-obturated-canals
#2
Luiza Salles Alves Berti, Leandro Augusto Pinto Pereira, Vanessa Galego Arias Pecorari, Flávia Lucisano Botelho Amaral, Cecília Pedroso Turssi, Roberta Tarkany Basting, Fabiana Mantovani Gomes França
This study evaluated the influence of timing after endodontic treatment and type of resin cement used on the bond strength of fiber posts to epoxy resin-obturated canals. A total of 80 bovine incisor roots were divided into four groups (n = 20). Glass fiber posts were cemented at two different times, immediately or 7 days after endodontic treatment, using either a dual-curing resin cement (RelyX ARC, 3M ESPE) or a self-adhesive resin cement (RelyX U200, 3M ESPE). Following post cementation, the samples were cross-sectioned into slices containing root dentin, cement, and fiber post at the cervical, mid, and apical root thirds...
December 15, 2017: International Journal of Periodontics & Restorative Dentistry
https://www.readbyqxmd.com/read/29244673/using-double-contrast-ct-arthrography-to-confirm-suspected-dissociation-of-a-cemented-polyethylene-liner-in-the-setting-of-revision-total-hip-arthroplasty-a-case-report
#3
Aakash Chauhan, Sean Fitzpatrick, Robert L Sciulli, Nicholas G Sotereanos, Jeffrey J Sewecke
CASE: A 67-year-old woman who underwent a re-revision of a total hip arthroplasty with a cemented polyethylene liner fell 14 months after surgery. The patient had symptoms of pain and weakness; however, clinical, laboratory, and radiographic evaluation did not disclose fracture, infection, osteolysis, or component migration. Liner dissociation was suspected, and a double-contrast computed tomography (CT) arthrogram confirmed failure at the cement-liner interface. She underwent additional revision surgery and was doing well at the 3-year follow-up...
April 2017: JBJS Case Connector
https://www.readbyqxmd.com/read/29243686/bone-augmentation-and-simultaneous-soft-tissue-thickening-with-collagen-tissue-matrix-derivate-membrane-in-an-aesthetic-area-a-case-report
#4
Algirdas Puišys, Saulius Žukauskas, Ričardas Kubilius, Eglė Vindašiūtė, Tomas Linkevičius
Aesthetic implant restoration in the anterior maxilla is a challenge for clinicians. Alveolar ridge and surrounding gingiva deficiencies aggravates implant placement in the aesthetic area. This case report describes a technique for aesthetic single implant placement with simultaneous bone grafting and soft tissue thickening. At the time of implant surgery, allogenic (Maxgraft, Botiss Biomaterials, Germany) and xenogenic bone substitute (Cerabone, Botiss Biomaterials, Germany) was used for bone grafting, soft tissues were augmented simultaneously with collagen tissue matrix derivate membrane (Mucoderm, Botiss Biomaterials, Germany)...
2017: Stomatologija
https://www.readbyqxmd.com/read/29243683/the-comparison-of-cement-and-screw-retained-crowns-from-technical-and-biological-points-of-view
#5
Aira Ragauskaitė, Gediminas Žekonis, Juozas Žilinskas, Alvydas Gleiznys, Eglė Ivanauskienė, Darius Gleiznys
OBJECTIVE: The aim of this review was to evaluate the most common complications in implant prosthodontics with porcelain-fused-to-metal crowns, to evaluate the influence of biomechanical properties on fractures and cracks of veneered porcelain, and to compare the effects of crowns with different connections on soft tissues. MATERIAL AND METHODS: A search of literature in the English language between 2009 and 2015 was conducted using the following databases: Medline via PubMed, Science Direct, Wiley online library, Taylor& Francis, and Cochrane library...
2017: Stomatologija
https://www.readbyqxmd.com/read/29241944/fracture-resistance-and-failure-modes-of-polymer-infiltrated-ceramic-endocrown-restorations-with-variations-in-margin-design-and-occlusal-thickness
#6
Doaa Taha, Sebastian Spintzyk, Christine Schille, Ahmed Sabet, Marwa Wahsh, Tarek Salah, Jürgen Geis-Gerstorfer
PURPOSE: The purpose of this in vitro study was to assess the effect of varying the margin designs and the occlusal thicknesses on the fracture resistance and mode of failures of endodontically treated teeth restored with polymer infiltrated ceramic endocrown restorations. METHODS: Root canal treated mandibular molars were divided into four groups (n=8) and were prepared to receive Computer-Aided Design/Computer-Aided Manufacturing (CAD/CAM) fabricated polymer infiltrated ceramic endocrowns (ENAMIC blocks)...
December 11, 2017: Journal of Prosthodontic Research
https://www.readbyqxmd.com/read/29240113/homogeneous-material-based-calibration-method-for-correcting-laser-induced-breakdown-spectroscopy-measurement-error-bias-in-the-case-of-dust-pollution
#7
Yang Zhao, Lei Zhang, Wangbao Yin, Jiajia Hou, Zhe Wang, Zongyu Hou, Weiguang Ma, Lei Dong, Guangye Yang, Liantuan Xiao, Suotang Jia
A calibration method based on homogeneous material for correcting laser-induced breakdown spectroscopy (LIBS) measurement-error bias in the case of dust pollution under laboratory conditions is proposed. The measured plasma spectra of the sample can be corrected by measuring the spectral integral of the homogeneous material. Thus, we can effectively minimize the dust pollution effect on LIBS and guarantee its precision. Results show that the mean absolute errors of CaO, MgO, Fe2O3, Al2O3, and SiO2 in cement samples are decreased notably from 1...
December 10, 2017: Applied Optics
https://www.readbyqxmd.com/read/29238859/-influence-of-thermodisinfection-on-impaction-of-cancellous-bone-an%C3%A2-in-vitro-model-of-femoral-impaction-bone-grafting
#8
REVIEW
C Fölsch, A Jahnke, A Groß, G Martels, G A Krombach, M Rickert, M Kampschulte
BACKGROUND: The reconstruction of bony defects during endoprosthesis revision surgery using "impaction bone grafting" leads to the possibility of a longstanding osseous integration to achieve good clinical results. Native allogeneic cancellous bone is often used for the procedure. This study examines the influence of thermodisinfection on the impaction behaviour of cancellous bone of different geometries and on the cement distribution. METHODS: The cancellous bone was obtained from the femoral heads of 7‑month old pigs...
December 13, 2017: Der Orthopäde
https://www.readbyqxmd.com/read/29238488/effect-of-hydrofluoric-acid-surface-treatments-on-micro-shear-bond-strength-of-cad-cam-ceramics
#9
Faraneh Mokhtarpour, Homayoon Alaghehmand, Soraya Khafri
Introduction: Dental ceramics are appreciated as highly esthetic restorative materials that can simulate the appearance of natural dentition better than other materials. The aim of this study was to evaluate the effect of hydrofluoric acid concentration and etching time on micro-shear bond strength (μSBS) to IPS e.max CAD and Vita Mark II of a dual cured resin cement (Panavia F2.0). Methods: This study was an experimental in vitro study, performed in the dental material research center of Babol University of Medical Sciences in 2016...
October 2017: Electronic Physician
https://www.readbyqxmd.com/read/29237021/human-specific-subcellular-compartmentalization-of-p-element-induced-wimpy-testis-like-piwil-granules-during-germ-cell-development-and-spermatogenesis
#10
Maria Gomes Fernandes, Nannan He, Fang Wang, Liesbeth Van Iperen, Cristina Eguizabal, Roberto Matorras, Bernard A J Roelen, Susana M Chuva De Sousa Lopes
STUDY QUESTION: What is the dynamics of expression of P-element induced wimpy testis-like (PIWIL) proteins in the germline during human fetal development and spermatogenesis? SUMMARY ANSWER: PIWIL1, PIWIL2, PIWIL3 and PIWIL4 were expressed in a sex-specific fashion in human germ cells (GC) during development and adulthood. PIWILs showed a mutually exclusive pattern of subcellular localization. PIWILs were present in the intermitochondrial cement and a single large granule in meiotic GC and their expression was different from that observed in mice, highlighting species-differences...
December 11, 2017: Human Reproduction
https://www.readbyqxmd.com/read/29236900/influence-of-implantoplasty-on-stress-distribution-of-exposed-implants-at-different-bone-insertion-levels
#11
João Paulo Mendes Tribst, Amanda Maria de Oliveira Dal Piva, Jamil Awad Shibli, Alexandre Luiz Souto Borges, Rubens Nisie Tango
This study evaluated the effect of implantoplasty on different bone insertion levels of exposed implants. A model of the Bone Level Tapered implant (Straumann Institute, Waldenburg, Switzerland) was created through the Rhinoceros software (version 5.0 SR8, McNeel North America, Seattle, WA, USA). The abutment was fixed to the implant through a retention screw and a monolithic crown was modeled over a cementation line. Six models were created with increasing portions of the implant threads exposed: C1 (1 mm), C2 (2 mm), C3 (3 mm), C4 (4 mm), C5 (5 mm) and C6 (6 mm)...
December 7, 2017: Brazilian Oral Research
https://www.readbyqxmd.com/read/29236682/is-it-beneficial-to-reuse-the-balloon-in-percutaneous-kyphoplasty-for-the-treatment-of-non-neoplastic-vertebral-compression-fractures
#12
Zehao Jing, Qi Sun, Jianli Dong, Fanqi Meng, Youzhi Song, Tonglin Xia, Jia Luo, Yanqiang Li, Feng Nan
BACKGROUND Percutaneous kyphoplasty (PKP) has been widely used to treat vertebral compression fractures (VCFs). Bilateral percutaneous punctures are always performed to access the fractured vertebrae. However, the procedure has expensive clinical costs, especially the cost for the device, which creates a heavy financial burden for patients. MATERIAL AND METHODS Data from 49 patients who have single-level non-neoplastic vertebral compression fracture (VCF) were collected for 12 months after treated by PKP, including 21 cases that used bilateral puncture with single balloon (S group) and 28 cases that used bilateral puncture with double balloon (D group)...
December 13, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/29235775/screw-retained-versus-cement-retained-restorations-aesthetic-zone-options
#13
Todd R Schoenbaum, Chandur P K Wadhwani
No abstract text is available yet for this article.
January 2017: Dentistry Today
https://www.readbyqxmd.com/read/29235196/influence-of-particle-and-air-abrasion-moment-on-y-tzp-surface-characterization-and-bond-strength
#14
Samira Branco Martins, Filipe de Oliveira Abi-Rached, Gelson Luis Adabo, Paolo Baldissara, Renata Garcia Fonseca
PURPOSE: To evaluate the influence of particle and air-abrasion on the surface characterization and shear bond strength (SBS) of a Y-TZP ceramic with a resin cement. MATERIALS AND METHODS: Y-TZP specimens were air-abraded with 50 μm alumina particles; 120 μm alumina particles; 30 μm silica-coated alumina particles (Rocatec Soft); 110 μm silica-coated alumina particles (Rocatec Plus). Air-abrasion was performed before (BS); after (AS); before and after (BAS) zirconia sintering...
December 13, 2017: Journal of Prosthodontics: Official Journal of the American College of Prosthodontists
https://www.readbyqxmd.com/read/29235022/atmospheric-heavy-metal-deposition-in-agro-ecosystems-in-china
#15
Yanling Zhang, Shixiang Zhang, Fengpeng Zhu, Aiguo Wang, Huaxin Dai, Sen Cheng, Jianwei Wang, Lina Tang
Atmospheric deposition has become one of the main sources of heavy metals in crops in developed and industrial zones in China for the past several years. However, lack of data of the agro-ecosystems on the vast areas of China makes it difficult to assess the impacts of air pollution on the heavy metal accumulation in crops. In this study, with deposit samples from 67 sites located at different agro-ecosystems (typical, factory nearby, town nearby, roadside, and remote) of four natural regions [Huanghuai (HH), Southeast (SE), Southwest (SW) and upper-mid Yangzi River (Up-mid YR)], atmospheric heavy metal deposition in agro-ecosystems on a large scale in China was studied...
December 12, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29234957/factors-affecting-the-outcomes-of-direct-pulp-capping-using-biodentine
#16
Mariusz Lipski, Alicja Nowicka, Katarzyna Kot, Lidia Postek-Stefańska, Iwona Wysoczańska-Jankowicz, Lech Borkowski, Paweł Andersz, Anna Jarząbek, Katarzyna Grocholewicz, Ewa Sobolewska, Krzysztof Woźniak, Agnieszka Droździk
INTRODUCTION: This study aimed to evaluate the prognostic value of factors with regard to the treatment outcome of direct pulp capping using Biodentine (Septodont, Saint-Maur-des-Fossés, France), in permanent teeth in which the pulps were exposed during caries removal. METHODS: Between 2010 and 2014, 112 teeth with deep carious lesions underwent direct pulp capping. The patients were followed up at 2-3 months and 1-1.5 years with a routine examination on both recall visits...
December 12, 2017: Clinical Oral Investigations
https://www.readbyqxmd.com/read/29234746/short-implants-as-an-alternative-to-crestal-sinus-lift-a-3-year-multicentre-randomised-controlled-trial
#17
Giorgio Gastaldi, Pietro Felice, Roberto Pistilli, Carlo Barausse, Anna Trullenque-Eriksson, Marco Esposito
PURPOSE: To evaluate the efficacy of short (5 or 6 mm long) dental implants vs 10 mm or longer implants placed in crestally lifted sinuses. MATERIALS AND METHODS: Twenty partially edentulous patients with 5 to 7 mm of residual crestal height and at least 7 mm thickness below the maxillary sinuses as measured on computed tomography scans were randomised according to a parallel group design to receive either one to two 5 or 6 mm long implants (10 patients) or 10 mm long implants (10 patients) after crestal sinus lifting and grafting with anorganic bovine bone...
2017: European Journal of Oral Implantology
https://www.readbyqxmd.com/read/29234663/reconstruction-with-iliac-pedestal-cup-and-proximal-femur-tumor-prosthesis-after-wide-resection-of-chondrosarcoma-10-year-follow-up-results
#18
Diogo Lino Moura, Rúben Fonseca, João Freitas, António Figueiredo, José Casanova
Chondrosarcoma is a malignant cartilage-forming neoplasm. It is difficult to treat because of resistance to both chemotherapy and radiation, making wide local excision the only treatment. This report presents an active, 43 year-old man who was diagnosed with recurrent clear cell chondrosarcoma of the proximal left femur, previously reconstructed with a total hip prosthesis, extending to the weight-bearing dome of the acetabulum. Cancer staging study revealed no signs of tumor dissemination at distance. Given the excellent functional status of the patient, the authors performed a Enneking-Dunham type periacetabular pelvic resection and resected en bloc, with the total hip prosthesis including 22 cm of the femur and a portion of the hip abductor apparatus...
November 2017: Revista Brasileira de Ortopedia
https://www.readbyqxmd.com/read/29234138/effect-of-high-power-laser-with-and-without-graphite-coating-on-bonding-of-resin-cement-to-lithium-disilicate-ceramic
#19
Fernanda A Feitosa, Rodrigo M de Araújo, Franklin R Tay, Lina Niu, César R Pucci
The present study evaluated the effect of different high-power-laser surface treatments on the bond strength between resin cement and disilicate ceramic. Lithium disilicate ceramic specimens with truncated cones shape were prepared and divided into 5 groups: HF (hydrofluoric acid-etching), Er:YAG laser + HF, Graphite + Er:YAG laser + HF, Nd:YAG laser + HF, and Graphite + Nd:YAG laser + HF. The treated ceramic surfaces were characterized with scanning electron microscopy and surface roughness measurement...
December 12, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29232186/cemented-or-cementless-total-knee-arthroplasty-comparative-results-of-200-cases-at-a-minimum-follow-up-of-11-years
#20
Jean-Louis Prudhon, Régis Verdier
INTRODUCTION: Since 1996 we have been using cementless fixation with hydroxyapatite (HA) coating. The purpose of this paper is to compare survivorship of a series of 100 cemented Total Knee Arthroplasty (TKA) to a similar series of 100 cementless with a follow up of 11-16 years. Material methods: Both TKA are mobile bearing total knee postero-stabilized. They can be used with cement or without cement. Among 1030 New Wave TKATM implanted from 2002 to 2015 we have identified 100 cemented TKAs and 100 cementless TKAs...
2017: SICOT-J
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