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https://www.readbyqxmd.com/read/28736293/zirconia-based-versus-metal-based-single-crowns-veneered-with-overpressing-ceramic-for-restoration-of-posterior-endodontically-treated-teeth-5-year-results-of-a-randomized-controlled-clinical-study
#1
Carlo Monaco, Altin Llukacej, Paolo Baldissara, Antonio Arena, Roberto Scotti
OBJECTIVES: The aim of this 5-year randomized controlled trial was to compare the longevity and clinical behavior of single posterior crowns made with pressable ceramic on zirconia and on metal frameworks, and if failures occur, to delineate the contributing factors. METHODS: 72 patients, who needed the covering of at least a molar and/or premolar, were included in the study. All teeth were endodontically treated, with absence of periapical lesion or active periodontitis...
July 20, 2017: Journal of Dentistry
https://www.readbyqxmd.com/read/28735678/all-ceramic-inlay-retained-fixed-dental-prostheses-for-replacing-posterior-missing-teeth-a-systematic-review
#2
REVIEW
Raquel Castillo-Oyagüe, Rocío Sancho-Esper, Christopher D Lynch, María-Jesús Suárez-García
PURPOSE: To evaluate the current status of all-ceramic inlay-retained fixed dental prostheses (CIR-FDPs) for the replacement of posterior teeth. STUDY SELECTION: Screening of titles and abstracts, full-text analysis for inclusion eligibility, quality assessment, data extraction and evaluation of the scientific evidence were performed independently by two reviewers. The electronic databases MEDLINE/PubMed, EMBASE, Cochrane Central Register of Controlled Trials, and Compludoc were searched with no restriction to publication date or language...
July 20, 2017: Journal of Prosthodontic Research
https://www.readbyqxmd.com/read/28735561/isolated-revision-of-the-acetabular-component-using-alumina-on-alumina-bearings-without-a-metal-sleeve-a-preliminary-study
#3
Kuan-Ting Wu, Jun-Wen Wang, Yu-Der Lu, Shih-Hsiang Yen, Mel S Lee
INTRODUCTION: There has been a debate on the use of ceramic-on-ceramic coupling with the retained femoral stem in isolated acetabular revision. The purpose of this study was to retrospectively review the results and complications of isolated revision of the acetabular component using alumina-on-alumina bearings. METHODS: Between August 2010 and December 2013, 22 patients (23 hips) with a mean age of 60.74 years (40-73) underwent isolated revision of the acetabular component from metal-on-polyethylene to alumina-on-alumina bearings without using a metal sleeve on the undamaged trunnion...
May 2017: Journal of Orthopaedic Surgery
https://www.readbyqxmd.com/read/28730361/the-effect-of-different-surface-materials-on-runoff-quality-in-permeable-pavement-systems
#4
Haiyan Li, Zhifei Li, Xiaoran Zhang, Zhuorong Li, Dongqing Liu, Tanghu Li, Ziyang Zhang
To investigate the effect of different permeable pavement surface materials on the removal of pollutants from urban storm-runoff, six commonly surface materials (porous asphalt, porous concrete, cement brick, ceramic brick, sand base brick, and shale brick) were selected in this study and the research was carried out by column experiments. Except the concentrations of total suspended solids (TSS), chemical oxygen demand (COD), ammonia nitrogen (NH4-N), nitrate nitrogen (NO3-N), total nitrogen (TN), and total phosphorus (TP) in the influent and effluent that were measured, the removal mechanism of pollutants was discussed further...
July 20, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28730213/magnetic-separation-its-application-in-mining-waste-purification-medicine-biochemistry-and-chemistry
#5
REVIEW
M Iranmanesh, J Hulliger
The use of strong magnetic field gradients and high magnetic fields generated by permanent magnets or superconducting coils has found applications in many fields such as mining, solid state chemistry, biochemistry and medical research. Lab scale or industrial implementations involve separation of macro- and nanoparticles, cells, proteins, and macromolecules down to small molecules and ions. Most promising are those attempts where the object to be separated is attached to a strong magnetic nanoparticle. Here, all kinds of specific affinity interactions are used to attach magnetic carrier particles to mainly objects of biological interest...
July 21, 2017: Chemical Society Reviews
https://www.readbyqxmd.com/read/28729803/anterosuperior-rehabilitation-with-metal-free-fixed-prosthesis-based-on-zirconia
#6
Sthelen Nayara Cenci, Igor Alessandro Gontarsky, Marcella Goetz Moro, Lidia Olga Bach Pinheiro, Adriana Postiglione Bührer Samra
The loss of upper front dental elements causes functional and psychosocial problems to the affected individuals. In this case report, the treatment planning considered hard and soft tissue loss for a complex fixed partial denture (FPD) rehabilitation. The six-element, all-ceramic FPD was manufactured using a computer-aided design/computer-aided manufacturing system with zirconia framework, veneered with leucite-reinforced ceramic. Ceramic artificial gum was also produced to guarantee tooth-facial proportions as well as lip support, promoting both esthetics and phonetics...
April 2017: European Journal of Dentistry
https://www.readbyqxmd.com/read/28727319/novel-evaluation-and-treatment-techniques-for-white-spot-lesions-an-in-vitro-study
#7
T A Bakhsh, A S Bakry, M M Mandurah, M A Abbassy
OBJECTIVE: White spot lesions (WSLs) are commonly seen during and after orthodontic treatment. Therefore, the objective of this in vitro study was to assess the effect of 45S5-bioglass in remineralizing WSLs using cross-polarization optical coherence tomography (CP-OCT) and confirm the findings by micro-hardness test. METHODS: Ceramic orthodontic brackets were bonded to the buccal surface of 45 human premolars with Transbond XT primer followed by Transbond PLUS according to the manufacturer's instructions...
August 2017: Orthodontics & Craniofacial Research
https://www.readbyqxmd.com/read/28721329/effect-of-different-crown-materials-on-the-interleukin-one-beta-content-of-gingival-crevicular-fluid-in-endodontically-treated-molars-an-original-research
#8
Prathibha Saravanakumar, Padmanabhan Thallam Veeravalli, Anand Kumar V, Kasim Mohamed, Umamaheswari Mani, Manita Grover, Saravanan Thirumalai Thangarajan
INTRODUCTION: Crown materials used in fixed prosthodontics come into close and prolonged contact with the gingiva. OBJECTIVE: The purpose of this study was to evaluate the effect of different crown materials on the interleukin-one beta (IL-1β) content of the gingival crevicular fluid and to study which crown material causes the highest inflammation on the marginal gingiva on a biochemical basis. MATERIALS AND METHODS: Twenty patients with single endodontically treated tooth were examined...
June 16, 2017: Curēus
https://www.readbyqxmd.com/read/28716026/short-stem-total-hip-arthroplasty-for-osteonecrosis-of-the-femoral-head-in-patients-60%C3%A2-years-or-younger-a-3-to-10-year-follow-up-study
#9
Antonio Capone, Fabrizio Bienati, Stefania Torchia, Daniele Podda, Giuseppe Marongiu
BACKGROUND: In young patients with osteonecrosis of the femoral head (ONFH), short-stem total hip arthroplasty (THA) could allow a potential advantage in preserving metaphyseal bone-stock, when revision surgery might become necessary. However, only a few studies have evaluated the outcome of short-stem THAs in ONFH. We reviewed the prospectively collected data of a cementless partial neck-retaining short-stem with ceramic-on-ceramic bearings in ONFH patients. METHODS: Thirty patients (37 hips) younger than 60 years (mean age at surgery, 51...
July 17, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/28713427/a-three-year-retrospective-study-on-survival-of-ceramic-veneered-zirconia-y-tzp-fixed-dental-prostheses-performed-in-private-practices
#10
Veronika Norström Saarva, Göran Bjerkstig, Anders Örtorp, Per Svanborg
OBJECTIVES: The aim of this retrospective study was to evaluate the three-year clinical outcome for ceramic-veneered zirconia fixed dental prostheses (FDPs). METHODS: All patients who were treated with ceramic-veneered zirconia FDPs, in three private practices in Sweden, during the period June 2003 to April 2007 were included. Case records from 151 patients, treated with a total of 184 zirconia FDPs (692 units), were analysed for clinical data. All complications noted in the charts were registered and compared to definitions for success and survival and statistical analysis was performed using the Kaplan-Meier method and a Cox regression model...
2017: International Journal of Dentistry
https://www.readbyqxmd.com/read/28712710/%C3%A3-tcp-bone-substitutes-in-tibial-plateau-depression-fractures
#11
Tim Rolvien, Florian Barvencik, Till Orla Klatte, Björn Busse, Michael Hahn, Johannes Maria Rueger, Martin Rupprecht
BACKGROUND: The use of beta-tricalciumphospate (ß-TCP, Cerasorb®) ceramics as an alternative for autologous bone-grafting has been outlined previously, however with no study focusing on both clinical and histological outcomes of ß-TCP application in patients with multi-fragment tibial plateau fractures. The aim of this study was to analyze the long-term results of ß-TCP in patients with tibial plateau fractures. METHODS: 52 patients were included in this study...
July 13, 2017: Knee
https://www.readbyqxmd.com/read/28710653/mechanical-performance-of-cement-and-screw-retained-all-ceramic-single-crowns-on-dental-implants
#12
Matthias Obermeier, Oliver Ristow, Kurt Erdelt, Florian Beuer
OBJECTIVES: This in-vitro study was performed to compare the contact wear, fracture strength and failure mode of implant-supported all-ceramic single crowns manufactured with various fabrication and fixation concepts. MATERIALS AND METHODS: Fifty dental implants (Conelog Ø 4,3mm/L11mm, Camlog Biotechnologies AG) were embedded and treated with all-ceramic molar single-crowns. Three groups received hand-layered zirconia crowns (IPS e.max Ceram/ IPS e.max ZirCAD, Ivoclar Vivadent AG): CZL (cement-retained zirconia-based layered) group crowns were cemented conventionally, SZL (screw-retained zirconia-based layered) group crowns were screw-retained, MZL (modified zirconia-based layered) group crowns showed a different coping design with screw retention...
July 15, 2017: Clinical Oral Investigations
https://www.readbyqxmd.com/read/28710154/outcomes-following-revision-surgery-performed-for-adverse-reactions-to-metal-debris-in-non-metal-on-metal-hip-arthroplasty-patients-analysis-of-185-revisions-from-the-national-joint-registry-for-england-and-wales
#13
G S Matharu, A Judge, D W Murray, H G Pandit
OBJECTIVES: Few studies have assessed outcomes following non-metal-on-metal hip arthroplasty (non-MoMHA) revision surgery performed for adverse reactions to metal debris (ARMD). We assessed outcomes following non-MoMHA revision surgery performed for ARMD, and identified predictors of re-revision. METHODS: We performed a retrospective observational study using data from the National Joint Registry for England and Wales. All non-MoMHAs undergoing revision surgery for ARMD between 2008 and 2014 were included (185 hips in 185 patients)...
July 2017: Bone & Joint Research
https://www.readbyqxmd.com/read/28708925/survival-rate-of-dental-implants-in-patients-with-history-of-periodontal-disease-a-retrospective-cohort-study
#14
Francisco Correia, Sónia Gouveia, António Campos Felino, Ana Lemos Costa, Ricardo Faria Almeida
PURPOSE: To evaluate the differences between the survival rates of implants placed in patients with no history of periodontal disease (NP) and in patients with a history of chronic periodontal disease (CP). MATERIALS AND METHODS: A retrospective cohort study was conducted in which all consenting patients treated with dental implants in a private clinic in Oporto, Portugal, from November 2, 2002 through February 11, 2011 were included. All patients were treated consecutively by the same experimental operator...
July 2017: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/28708461/effects-of-four-different-crown-materials-on-the-peri-implant-clinical-parameters-and-composition-of-peri-implant-crevicular-fluid
#15
Shu-Juan Yu, Wen-Ling Shan, Yu-Xiao Liu, Xiao-Yan Huang, Guo-Xiong Zhu
This study aimed to identify the preferred crown material by measuring the peri-implant clinical parameters and the concentrations of receptor activator of nuclear factor-κB ligand (RANKL), osteoprotegerin (OPG), and calcium in peri-implant crevicular fluid (PICF) with four different crown materials. A total of 196 patients with a single missing posterior tooth received crown restoration with cobalt-chromium (Co-Cr) porcelain-fused-to-metal (PFM) (n=50), aurum platinum (Au-Pt) PFM (n=48), titanium (Ti) PFM (n=52), or zirconia (Zi) all-ceramic crown (n=46)...
July 14, 2017: Journal of Oral Implantology
https://www.readbyqxmd.com/read/28708007/effect-of-hydrofluoric-acid-concentration-and-etching-time-on-bond-strength-to-lithium-disilicate-glass-ceramic
#16
J Puppin-Rontani, D Sundfeld, A R Costa, A B Correr, R M Puppin-Rontani, G A Borges, Mac Sinhoreti, L Correr-Sobrinho
The aim of this study was to evaluate the influence of different concentrations of hydrofluoric acid (HF) associated with varied etching times on the microshear bond strength (μSBS) of a resin cement to a lithium disilicate glass ceramic. Two hundred seventy-five ceramic blocks (IPS e.max Press [EMX], Ivoclar Vivadent), measuring 8 mm × 3 mm thickness, were randomly distributed into five groups according to the HF concentrations (n=50): 1%, 2.5%, 5%, 7.5%, and 10%. Further random distribution into subgroups was performed according to the following etching times (n=10): 20, 40, 60, 120, and 20 + 20 seconds...
July 14, 2017: Operative Dentistry
https://www.readbyqxmd.com/read/28702061/the-effect-of-surface-treatment-with-a-fractional-carbon-dioxide-laser-on-shear-bond-strength-of-resin-cement-to-a-lithium-disilicate-based-ceramic
#17
Farzaneh Ahrari, Alireza Boruziniat, Hamideh Sadat Mohammadipour, Mehrnoosh Alirezaei
BACKGROUND: This study investigated the impact of different surface treatments, including fractional carbon dioxide (CO2) laser on shear bond strength (SBS) of resin cement to lithium disilicate ceramic. MATERIALS AND METHODS: In this in vitro study, 72 blocks of IPS e.max CAD ceramic were randomly divided into six groups in terms of treatment (n = 12). Group 1 underwent etching with 9.6% hydrofluoric (HF) acid, whereas group 2 was subjected to air abrasion with aluminum oxide particles...
May 2017: Dental Research Journal
https://www.readbyqxmd.com/read/28701640/the-effect-of-five-kinds-of-surface-treatment-agents-on-the-bond-strength-to-various-ceramics-with-thermocycle-aging
#18
Yukari Noda, Masatoshi Nakajima, Masahiro Takahashi, Teerapong Mamanee, Keiichi Hosaka, Tomohiro Takagaki, Masaomi Ikeda, Richard M Foxton, Junji Tagami
This study evaluated the effects of ceramic surface treatment agents on shear bond strengths to ceramic materials with and without thermocycling. Ceramic plates were prepared from feldspathic ceramic; AAA, lithium disilicate ceramic material; IPS e.max Press, zirconia ceramic; Lava. Ceramic surfaces were pretreated with one of five surface treatment agents (Clearfil PhotoBond mixed with Porcelainbond activator (PB), Clearfil SE One mixed with Porcelainbond activator (SO), Ceramic Primer (CP), Universal Primer (UP), Scotchbond Universal (SU)), and then a resin cement (Clapearl DC) was filled...
July 12, 2017: Dental Materials Journal
https://www.readbyqxmd.com/read/28699752/structural-distortion-spin-phonon-coupling-interband-electronic-transition-and-enhanced-magnetization-in-rare-earth-substituted-bismuth-ferrite
#19
Jie Wei, Chunfang Wu, Yalong Liu, Yaxin Guo, Tiantian Yang, Dawei Wang, Zhuo Xu, Raphael Haumont
Rare-earth ions (RE = La(3+), Nd(3+), and Er(3+)) substituted BiFeO3 (BFO) ceramics were synthesized by a conventional solid-state sintering procedure. X-ray diffraction patterns and Raman spectra confirm a rhombohedral R3c symmetry in all samples with significant distortion in FeO6 octahedron, as well as the occurrence of remarkable spin-phonon coupling and notable change in magnetic transition temperature induced by RE dopants. The enhanced magnetization was observed in all RE-doped BFO ceramics, unveiling that the spatial spin structure of BFO should be perturbed by RE dopants...
July 12, 2017: Inorganic Chemistry
https://www.readbyqxmd.com/read/28697772/injectable-and-compression-resistant-low-viscosity-polymer-ceramic-composite-carriers-for-rhbmp-2-in-a-rabbit-model-of-posterolateral-fusion-a-pilot-study
#20
Stefanie M Shiels, Anne D Talley, Madison A P McGough, Katarzyna J Zienkiewicz, Kerem Kalpakci, Daniel Shimko, Scott A Guelcher, Joseph C Wenke
BACKGROUND: The challenging biological and mechanical environment of posterolateral fusion (PLF) requires a carrier that spans the transverse processes and resists the compressive forces of the posterior musculature. The less traumatic posterolateral approach enabled by minimally invasive surgical techniques has prompted investigations into alternative rhBMP-2 carriers that are injectable, settable, and compression-resistant. In this pilot study, we investigated injectable low-viscosity (LV) polymer/composite bone grafts as compression-resistant carriers for rhBMP-2 in a single-level rabbit PLF model...
July 11, 2017: Journal of Orthopaedic Surgery and Research
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