12,293 results match your criteria Porcelain Gallbladder
Clin Oral Implants Res 2018 Dec 6. Epub 2018 Dec 6.
Department of Oral Surgery and Implant Dentistry, Faculdade de Medicina Dentária da Universidade de Lisboa, Portugal.
Objectives: To evaluate the performance of two types of zirconia frameworks.
Material And Methods: From 2014 to 2016, in a prospective clinical trial 150 patients were rehabilitated with 83 and 110 implant-supported, screw-retained, full-arch ceramic-veneered zirconia (PVZ) rehabilitations and monolithic zirconia with porcelain veneering limited to buccal (MZ) rehabilitations, respectively. Patients were consecutively enlisted according to pre-defined inclusion criteria and evaluated on 4 months intervals. Read More
Open Dent J 2018 25;12:846-855. Epub 2018 Oct 25.
Department of Prosthetic Dental Sciences, King Saud University, Riyadh, Saudi Arabia.
Background: The major difference in the chemical composition of Y-TZP ceramics, as compared with conventional porcelain, led researchers to develop alternative solutions for achieving durable and long term bonding with the zirconia surface.
Objective: The study aims to evaluate the effects of glow discharge treatment on the bonding between cement and zirconia.
Methods: The zirconia rings and rods were prepared with the Zirconia Y-TZP powder and TZ-3YSB-E (Tosoh-Zirconia) through auto-mix to investigate the glow discharge and thermo-cycling. Read More
Dent Mater 2018 Nov 29. Epub 2018 Nov 29.
Department of Engineering Science, University of Oxford, Parks Road, Oxford, OX1 3PJ, United Kingdom.
Objective: Residually strained porcelain is influential in the early onset of failure in Yttria Partially Stabilised Zirconia (YPSZ) - porcelain dental prosthesis. In order to improve current understanding it is necessary to increase the spatial resolution of residual strain analysis in these veneers.
Methods: Few techniques exist which can resolve residual stress in amorphous materials at the microscale resolution required. Read More
J Prosthodont 2018 Nov 26. Epub 2018 Nov 26.
Department of Materials Science and Technology, Faculty of Odontology, Malmö University, Malmö, Sweden.
Purpose: To investigate the load-bearing capacity and failure mode of monolithic zirconia fixed dental prostheses (FDPs) fabricated with different connector designs and embrasure shaping methods.
Materials And Methods: Seventy four-unit zirconia FDPs (with two premolar pontics) were fabricated and divided into seven groups (n = 10) according to the different connector designs gained by using different embrasure shaping methods. The groups were as follows: monolithic FDPs fabricated with sharp embrasures, monolithic FDPs fabricated with blunt embrasures, monolithic FDPs fabricated with blunt embrasures and no occlusal embrasures, two groups of monolithic FDPs fabricated with blunt embrasures and interproximal separations made with diamond discs at the soft stage and at the fully sintered stage, and monolithic FDPs fabricated with blunt embrasures and interproximal separation accentuated by localized porcelain build-up. Read More
J Prosthet Dent 2018 Nov 23. Epub 2018 Nov 23.
Professor Emeritus, Division of General Dentistry and Materials Science, College of Dentistry, The Ohio State University, Columbus, Ohio. Electronic address:
Statement Of Problem: A good color match combined with a proper translucency match results in excellent esthetics for a metal-free restoration, yet basic color and translucency comparisons between available zirconia systems are not well described.
Purpose: The purpose of this in vitro study was to compare the color and translucency of commercially available zirconia materials.
Material And Methods: Eight specimen disks were formed in each of the single-layer (0. Read More
R Soc Open Sci 2018 Oct 17;5(10):180483. Epub 2018 Oct 17.
Hunan Key Laboratory of Mineral Materials and Application, Central South University, Changsha 410083, People's Republic of China.
The work investigated the effect of sepiolite nanofibres on mechanical properties and sintering behaviour of shellfish porcelain. Samples of shellfish porcelain reinforced by sepiolite nanofibres were fired in an electric furnace at 1150, 1200 and 1250°C for a period of 80, 100, 120 and 140 min. Sintered samples were characterized by flexural strength, fracture toughness, scanning electron microscopy, transmission electron microscopy and X-ray diffraction. Read More
Eur J Oral Sci 2018 Nov 22. Epub 2018 Nov 22.
Department of Clinical Dentistry, Faculty of Medicine, University of Bergen, Bergen, Norway.
Zirconia-based restorations are showing an increase as the clinicians' preferred choice at posterior sites because of the strength and esthetic properties of such restorations. However, all-ceramic restorations fracture at higher rates than do metal-based restorations. Margin design is one of several factors that can affect the fracture strength of all-ceramic restorations. Read More
J Mech Behav Biomed Mater 2018 Sep 27;90:515-522. Epub 2018 Sep 27.
Univ. Estadual Paulista (UNESP), Institute of Science and Technology at São José dos Campos, Department of Dental Materials and Prosthodontics, Eng. Francisco José Longo Avenue 777, 12245-000 São José dos Campos, SP, Brazil. Electronic address:
Objectives: The purpose of the study was to characterize the microstructure, constituents, and mechanical properties of mono and bilayered zirconia specimens infiltrated with silica by the sol gel method.
Methods: 180 zirconia discs (14-mm diameter) were divided in 3 groups (n = 60) according to thickness (1.2, 0. Read More
J Mech Behav Biomed Mater 2018 Sep 27;90:433-440. Epub 2018 Sep 27.
Clinic of Fixed and Removable Prosthodontics and Dental Material Science, Center of Dental Medicine, University of Zurich, Switzerland.
Objectives: The objective of this study was to test whether or not the load-bearing capacity of occlusal veneers bonded to enamel and made of ceramic or hybrid materials does differ from those of porcelain-fused-to-metal or lithium disilicate glass ceramic crowns.
Material And Methods: In 80 human molars occlusal enamel was removed without extending into the dentin in order to mimic substance defects caused by attrition. The restorations were digitally designed at a standardized thickness of either 0. Read More
J Prosthodont Res 2018 Nov 13. Epub 2018 Nov 13.
Department of Fixed Prosthodontics, Nihon University School of Dentistry, Tokyo, Japan.
Purpose: To determine the effect of veneering material and framework design on fracture loads of implant-supported zirconia molar fixed dental prostheses (FDPs).
Methods: Sixty-six zirconia FDPs were manufactured onto two implants and classified as uniform thickness (UT) or anatomic design (AD). These framework design groups were then further divided into three subgroups (n=11): feldspathic porcelain-veneered zirconia FDPs (PVZ), indirect composite-veneered zirconia FDPs (IVZ), and metal-ceramic FDPs (MC). Read More
Clin Oral Implants Res 2018 Nov 14. Epub 2018 Nov 14.
ARDEC Academy, Rimini, Italy.
Objectives: To evaluate prospectively the clinical and radiographic outcomes after ten years of short (6 mm) implants with a moderately rough surface supporting single crowns in the posterior region.
Material And Methods: Forty 6 mm modified sandblasted large-grit acid-etched (mod-SLA), soft tissue level implants were installed in the distal segments of 35 consecutive patients. After 6 weeks of healing, abutments were tightened, and single porcelain-fused-to-metal crowns were cemented. Read More
Compend Contin Educ Dent 2018 Nov/Dec;39(10):714-720
Associate Faculty, The Dawson Academy, St. Petersburg, Florida; Private Practice, Shippensburg, Pennsylvania.
Typically, dentists spend many years training to learn how to prepare teeth for restorations. Whether the restoration comprises a filling, veneer, crown, inlay, onlay, or bridge, teeth often require preparation to allow adequate space to accommodate the thickness of the restorative material. However, dentists may face a dilemma if a patient inquires about receiving an enhanced smile without tooth preparation. Read More
Forensic Sci Int 2018 Dec 16;293:77-85. Epub 2018 Oct 16.
Boston University School of Medicine, Program in Forensic Anthropology,72 East Concord Street, Boston, MA 02118, United States; Departments of Anatomy & Neurobiology and Anthropology, Boston University School of Medicine,72 East Concord Street (L1004), Boston, MA 02118, United States.
This study examines the effects of household corrosive products on 105 restored (silver amalgam and porcelain-fused-to metal) and non-restored teeth. Five household products were utilized, including hydrochloric acid, sulfuric acid and detergent. Teeth were radiographed before and after exposure and were submerged for 120 or 264h. Read More
Quintessence Int 2018 Nov 8:2-11. Epub 2018 Nov 8.
Objective: This study investigated the effect of framework design and modification of porcelain firing cycle on the occurrence of fractures of metal-ceramic and bilayered zirconia crowns after cyclic loading.
Method And Materials: Twenty-four zirconia crowns with two different apicocoronal incisal veneering porcelain lengths (ZS = 2.0 mm and ZL = 4. Read More
J Prosthet Dent 2018 Nov 2. Epub 2018 Nov 2.
Professor, Graduate Program in Dentistry, School of Dentistry, Federal University of Pelotas (UFPel), Pelotas, Brazil. Electronic address:
Restoring a single darkened central incisor can be challenging. Both direct and indirect options may be acceptable to mask discoloration and achieve functional requirements. This report describes placement of a modified feldspathic porcelain veneer to reproduce the appearance of a maxillary central incisor discolored after trauma. Read More
J Prosthet Dent 2018 Oct 31. Epub 2018 Oct 31.
Distinguished Professor, Advanced Specialty Education Program in Prosthodontics, Loma Linda University, School of Dentistry, Loma Linda, Calif.
Statement Of Problem: The marginal and internal adaptations of porcelain laminate veneers (PLVs) are key elements in their long-term success. However, the marginal and internal fit obtained with a pressable material compared with computer-aided design and computer-aided manufacturing (CAD-CAM) needs further investigation as does the choice of cement used.
Purpose: The purpose of this in vitro study was to evaluate the marginal and internal fit of PLVs fabricated using pressing and CAD-CAM milling and cemented using 2 types of composite resin cement. Read More
Eur J Cardiothorac Surg 2018 Nov 2. Epub 2018 Nov 2.
Department for Cardiovascular Surgery, University Hospital and University of Bern, Bern, Switzerland.
J Mech Behav Biomed Mater 2018 Oct 1;90:239-247. Epub 2018 Oct 1.
Center for Micro-Electro Mechanical Systems (CMEMS-UMinho), University of Minho, Campus de Azurém, 4800-058 Guimarães, Portugal; School of Dentistry (DODT), Postgraduate Program in Dentistry (PPGO), Federal University of Santa Catarina, Campus Trindade, 88040-900 Florianópolis, SC, Brazil; Ceramic and Composite Materials Research Group (CERMAT), Federal University of Santa Catarina (UFSC), Campus Trindade, Florianópolis, SC, Brazil. Electronic address:
Conversely to natural teeth, where periodontal ligament (PDL) and pulp works as a damper reducing the effect of the stress on surrounding structures, when natural teeth is lost and replaced or restored the biting forces are directly transmitted to the bone or affect the integrity of the adjacent bottom layers. In this study, damping capacity and dynamic Young's modulus of CoCrMo-porcelain composites for dental restorations were evaluated. Dynamic Young's modulus and damping capacity of materials were assessed by dynamic mechanical analyzes (DMA) at 1 and 10 Hz frequencies, over a temperature ranging (18-60 °C). Read More
Dent Mater J 2018 Nov 1. Epub 2018 Nov 1.
Department of Biology, Nippon Dental University School of Life Dentistry at Niigata.
Polytetrafluoroethylene (PTFE) is chemically stable, non-toxic to humans, highly resistant to heat and chemicals, and has an extremely low coefficient of friction. Therefore, PTFE is used in medical applications. We focused on the physical properties of PTFE in relation to its application as a material for use in prostheses and dental devices/instruments. Read More
J Esthet Restor Dent 2018 Oct 30. Epub 2018 Oct 30.
Department of Preventive and Restorative Sciences, School of Dental Medicine, University of Pennsylvania, Philadelphia, Pennsylvania.
Objective: To evaluate the influence of saliva contamination and cleaning procedures on shear bond strength (SBS) of a self-adhesive resin cement (SAC) to zirconia surfaces.
Materials And Methods: A total of 160 sandblasted zirconia blocks were randomly divided into eight groups as follows: No saliva contamination, no cleansing (NC-NC); contamination with saliva, no cleansing (SC-NC); no saliva contamination, cleansing with a zirconia primer (ZP; Z-Bond, Danville Materials, Inc., S. Read More
Med Sci Monit 2018 Oct 31;24:7778-7784. Epub 2018 Oct 31.
Department of Periodontology, Harran University, Faculty of Dentistry, Sanliurfa, Turkey.
BACKGROUND The purpose of this clinical study was to compare the marginal adaptation of infrastructure design with 4 different techniques. MATERIAL AND METHODS Forty tissue-level implant abutments (NTA, Shorter) were inserted on implant analogs. The samples were placed randomly in the wax blocks in the arch form of the upper jaw so that there would be 10 in each group. Read More
J Adhes Dent 2018 ;20(5):425-433
Purpose: To evaluate the effect of water aging of adherend composite on repair bond strength to nanofilled composites with specific fillers using different bonding agents.
Materials And Methods: Three nanofilled composites - Beautifil II with S-PRG filler (BE) / Filtek Supreme ultra with nanocluster filler (SP) / Estelite Σ Quick (ES) - and one microhybrid composite, Clearfil APX (AP), were used in this study. The composite disks were immersed in water for different durations (immediate, 1 week, 2 weeks or 1 month), and then the polished surfaces were treated with one of three bonding agents - no treatment (control), application of Clearfil SE One (SE), application of Clearfil SE One plus Clearfil Porcelain Bond Activator (PB) - then filled with a repair composite. Read More
J Invasive Cardiol 2018 Nov;30(11):E129
Hartford Hospital, University of Connecticut, 85 Seymour Street, Hartford, CT 06106 USA. bjh02002@ gmail.com.
Periprocedural stroke related to transcatheter aortic valve replacement (TAVR) is associated with increased morbidity and mortality. Cerebral embolic protection using the Sentinel device (Claret Medical) has demonstrated reduced rates of stroke during TAVR. However, alternative access such as a transcarotid approach precludes the use of the Sentinel device. Read More
Mil Med 2018 Oct 27. Epub 2018 Oct 27.
Naval Medical Research Unit San Antonio, 3650 Chambers Pass Bldg. 3610, FT Sam Houston, TX.
Introduction: Computer-aided design/computer-aided manufacturing (CAD/CAM) has gained increasing popularity since the first commercially viable dental system was introduced in the mid-1980s. Digitally milled dental restorations can be fabricated chairside in the course of one dental appointment, reducing time, cost, and manpower when compared with traditional laboratory-fabricated analog restorations. Clinical performance, physical properties, and esthetics of digital restorations have been shown to be comparable to traditional analog restorations. Read More
Eur J Dent 2018 Oct-Dec;12(4):590-593
Department of Restorative Dentistry, Faculty of Dentistry, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil.
This clinical report describes an 8-year follow-up evaluation using different thicknesses of porcelain laminate veneers of diastema and malformed anterior teeth. Minimally invasive treatment with no preparation or minimal reduction options could be considered and chosen based on the characteristics of each case. Laminate veneers with or without reduction can offer an excellent result regarding esthetics and function. Read More
Int J Health Care Qual Assur 2018 Aug;31(7):662-675
Center for Age-Related Medicine - SESAM, Stavanger University Hospital , Stavanger, Norway.
Purpose: The Porcelain for All project was an initiative by Figgjo AS, a porcelain factory in Norway, which needed more research on different coloured porcelains. The paper aims to discuss this issue.
Design/methodology/approach: The study aimed to gain new knowledge about how different décor and dinner plate colours can positively influence dementia sufferer food intake and appetite. Read More
Open Access Maced J Med Sci 2018 Sep 24;6(9):1742-1755. Epub 2018 Sep 24.
Faculty of Technology and Metallurgy, Ss Cyril and Methodius University of Skopje, Skopje, Republic of Macedonia.
Background: The high esthetic expectations from the prosthodontic restorations have directed the qualitative development of the materials towards the all-ceramic materials that are capable of replacing porcelain-fused-to-metal systems.
Aim: This article reviews the literature covering the contemporary all-ceramic materials and systems with a focus on the chemical composition and materials' properties; also it provides clinical recommendations for their use.
Results: The glass-matrix ceramics and polycrystalline ceramics are presented, as well as recently introduced machinable materials, all-zirconia and resin-matrix ceramics. Read More
Open Access Maced J Med Sci 2018 Sep 11;6(9):1702-1706. Epub 2018 Sep 11.
Restorative Dentistry Dept., AL-Farabi Dental College, Jeddah, Saudi Arabia.
Aim: This study deeply investigates the effect of dental implant threading and material selection on the mandibular bone under two different crown materials (Translucent Zirconia and Porcelain fused to metal).
Methods: Two different designs of single piece dental implants were supporting dummy crown above simplified bone geometry in two finite element models. Models components were created by general-purpose CAD/CAM engineering package and then assembled inside ANSYS before meshing and assigning materials. Read More
Mar Environ Res 2018 Nov 28;142:124-129. Epub 2018 Sep 28.
Odum School of Ecology, University of Georgia, Athens, GA, 30602, USA.
Ecosystem engineers are predicted to have stronger facilitative effects when environmental stress is higher. Here we examined whether facilitation of the invasive porcelain crab Petrolisthes elongatus by the ecosystem engineering serpulid tube worm Galeolaria caespitosa increased with wave exposure. Petrolisthes occurs beneath intertidal boulders which often have a high cover of Galeolaria on their underside. Read More
Zootaxa 2018 Sep 28;4486(3):393-400. Epub 2018 Sep 28.
Estuary Research Center, Shimane University, 1060 Nishikawatsu-cho, Matsue, Shimane 690-8504, Japan..
A new species of porcelain crab, Polyonyx angustus n. sp., is described on the basis of material collected from Panglao Island, the Central Philippines. Read More
Zootaxa 2018 Jun 6;4429(2):303-323. Epub 2018 Jun 6.
Estuary Research Center, Shimane University, 1060 Nishikawatsu-cho, Matsue, Shimane 690-8504, Japan..
Five species of the genus Polyonyx Stimpson, 1858 are reported from southern Japan, the Philippines, Singapore, and Peninsular Malaysia. All of them belong to the P. sinensis group, which is morphologically defined by having the dactyli of the ambulatory legs each with the dorsal claw being much smaller than the ventral claw. Read More
Zootaxa 2018 Jun 11;4433(1):111-126. Epub 2018 Jun 11.
Estuary Research Center, Shimane University, 1060 Nishikawatsu-cho, Matsue, Shimane 690-8504, Japan..
A new species of the porcellanid genus Raphidopus Stimpson, 1858, is described on the basis of specimens from Penang and Kuala Selangor, Peninsular Malaysia. Raphidopus brevipes n. sp. Read More
PLoS One 2018 11;13(10):e0204025. Epub 2018 Oct 11.
Fachgebiet Keramische Werkstoffe / Chair of Advanced Ceramic Materials, Technische Universität Berlin, Berlin, Germany.
Here we demonstrate that by applying exclusively Martian resources a processing route involving suspensions of mineral particles called slurries or slips can be established for manufacturing ceramics on Mars. We developed water-based slurries without the use of additives that had a 51 wt. % solid load resembling commercial porcelain slurries in respect to the particle size distribution and rheological properties. Read More
Clin Oral Implants Res 2018 Oct;29 Suppl 18:224-236
Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Department of Prosthodontics, Geriatric Dentistry and Craniomandibular Disorders, Berlin, Germany.
Objective: To assess the survival and technical complication rate of partial and full-arch all-ceramic implant-supported fixed dental prostheses (P-FDP/FA-FDP) and supporting implants.
Materials And Methods: An electronic search through three databases (MEDLINE/Pubmed, Cochrane Library, Embase) was conducted to identify relevant clinical studies with an observation period of at least 12 months, including ≥15 patients. Reconstruction and implant survival rates, technical complications and confounding variables such as processed/installed materials, retention mode and location in the mouth were obtained. Read More
Clin Oral Implants Res 2018 Oct;29 Suppl 18:196-223
Department of Prosthetic Dentistry, Faculty of Medicine, Center for Dental Medicine, Medical Center - University of Freiburg, Freiburg, Germany.
Objective: This review aimed at evaluating the survival and technical complication rates of all-ceramic implant-supported single crowns (SC).
Material And Methods: Three electronic databases were searched for clinical studies conducted at ≥ 15 patients examining implant-supported all-ceramic SCs over ≥ 12 months. Survival rates of implants and restorations plus technical complication rates of SCs were calculated and tested for statistical correlation with confounding variables. Read More
Clin Oral Implants Res 2018 Oct;29 Suppl 18:184-195
Clinic of Fixed and Removable Prosthodontics and Dental Material Science, Center of Dental Medicine, University of Zurich, Zurich, Switzerland.
Objective: To identify clinical studies evaluating efficiency and/or effectiveness of digital technologies as compared to conventional manufacturing procedures for the fabrication of implant-supported reconstructions.
Materials And Methods: A systematic search from 1990 through July 2017 was performed using the online databases Medline, Embase, and Cochrane-Central-Register-of-Controlled-Trials. Literature on efficiency and/or effectiveness during the impression session, the manufacturing process, and the delivery session were included. Read More
J Clin Exp Dent 2018 Aug 1;10(8):e739-e745. Epub 2018 Aug 1.
Assistant Professor, Department of Orthodontics, Lorestan University of Medical Sciences, Khorramabad, Iran.
Background: Assure Plus is a recently introduced universal adhesive with the ability to bond to various restorations. This study compared the shear bond strength of brackets bonded to two types of ceramics using conventional bonding agent and Assure Plus. Surface damage caused by debonding was also evaluated. Read More
Int J Periodontics Restorative Dent 2018 Nov/Dec;38(6):865-871
The aim of this study was to assess the powdering technique and its effects on the flexural strength of bilayered zirconia. Bars made of zirconia partially stabilized by yttrium (Y-TZP) received porcelain by the following techniques (n = 10 per group): (1) L: VM9 application; (2) P: powdering technique + VM9 application; (3) C: Y-TZP coloring before sintering + Y-TZP sintering + VM9 application; or (4) CP: Y-TZP coloring before sintering + Y-TZP sintering + powdering technique + VM9 application. The powdering technique consisted of the application of VM9 margin powder followed by sintering. Read More
Contemp Clin Dent 2018 Sep;9(Suppl 2):S278-S282
Department of Periodontics, Mallareddy Institute of Dental Sciences, Hyderabad, Telangana, India.
Background: Dental implants are associated with failure such as early or late failure. Systemic conditions such as diabetes, hypertension, and bruxism affect the success rate. The present study was conducted to assess complications in dental implants in bruxism patients. Read More
J Conserv Dent 2018 Sep-Oct;21(5):557-561
Department of Conservative Dentistry and Endodontics, Army College of Dental Sciences, Secunderabad, Telangana, India.
Context: Noncarious cervical lesions may penetrate the pulp and require root canal treatment followed by crown placement. Such teeth may be susceptible to fracture, especially at the cervical area.
Aims: To estimate which combination of restorative material and crown resulted in homogenous stress-strain distribution of endodontically treated abfracted mandibular premolar using three-dimensional finite element model (FEM). Read More
Eur J Cardiothorac Surg 2018 Oct 4. Epub 2018 Oct 4.
Department of Thoracic and Cardiovascular Surgery, Pontchaillou University Hospital, Rennes, France.
Structural valve deterioration is a well-studied phenomenon in bioprosthetic heart valves. Conversely, structural valve deterioration after transcatheter aortic valve implantation is not as well-elucidated. Therefore, late surgical explantation after transcatheter aortic valve implantation is an infrequent procedure, and thus, surgical findings and management of such cases remain unclear, particularly in patients previously labelled as 'inoperable' or at 'high risk'. Read More
J Cardiol Cases 2017 Dec 5;16(6):186-188. Epub 2017 Sep 5.
Division of Anesthesiology, Saiseikai Kumamoto Hospital, Kumamoto, Japan.
A 92-year-old woman was transferred to our institute due to drug-resistant heart failure from severe aortic stenosis. She seemed to be a candidate for transcatheter aortic valve implantation (TAVI) because of her frailty and porcelain aorta. There were no severe calcified nodules in the left-ventricular outflow tract area. Read More
Heart Lung Circ 2018 Nov 8;27(11):e111-e112. Epub 2018 Jun 8.
Cardiology Department, Centro Hospitalar São João, Portugal; Faculty of Medicine, Porto University, Portugal.
J Mech Behav Biomed Mater 2019 Jan 14;89:143-149. Epub 2018 Sep 14.
São Paulo State University (Unesp), Institute of Science and Technology at São José dos Campos, Department of Dental Materials and Prosthodontics, Eng.Francisco José Longo Avenue 777, 12245-000 São José dos Campos, SP, Brazil. Electronic address:
Conventionally veneered zirconia restorations are susceptible to chipping and spalling of the veneering material. The novel translucent zirconias were developed to overcome such issues, although layered zirconia restorations can be re-designed to improve mechanical performance. Thus, the aim of this study was to analyze the strength and structural reliability of zirconia bilayers using conventional (porcelain ceramic under tensile stress) and bioinspired (zirconia under tensile stress) configurations. Read More
Am J Orthod Dentofacial Orthop 2018 Oct;154(4):570-582
Department of Orthodontics and Craniofacial Biology, Radboud University Medical Center, Nijmegen, The Netherlands. Electronic address:
This case report shows the treatment of a severe traumatic tooth injury. For the maxillary right central incisor, the trauma was considered a complicated crown-root fracture. The level of the fracture line, the length of the remaining root segment, and the presence and condition of the tooth fragment determined the type of therapy. Read More
Int J Oral Maxillofac Implants 2018 Sep/Oct;33(5):e117-e126
Purpose: The aim of this study was to analyze and compare the stress distribution patterns of different implant and restorative materials in the supporting tissue and implants.
Materials And Methods: Twelve different implant/bone models were created using SolidWorks 2015 software (SolidWorks Corp) and analyzed using the finite element method. Straumann Bone Level implants with zirconia abutments and single-piece Straumann PURE Ceramic implants (Institute Straumann) restored with lithium disilicate glass-ceramic and zirconia ceramic cement-retained crowns were evaluated. Read More
Int J Oral Maxillofac Implants 2018 Sep/Oct;33(5):1064-1069
Purpose: The ideal digital cement space value for the fabrication of provisional computer-aided design/computer-aided manufacturing (CAD/CAM) crowns with clinically acceptable marginal adaptation is not well known. The aim of this study was to evaluate the effect of different simulated cement space settings on the marginal fit of poly(methyl methacrylate) (PMMA) provisional CAD/CAM restorations.
Materials And Methods: An extracted premolar tooth was prepared using ceramic crown preparation guidelines and represented both natural teeth and/or custom implant abutments. Read More
Photomed Laser Surg 2018 Nov 18;36(11):601-607. Epub 2018 Sep 18.
1 Department of Stomatology, Beijing Friendship Hospital, Capital Medical University , Beijing, China .
Objective: To evaluate the effect of erbium: yttrium aluminium garnet laser conditioning bond strength of orthodontic brackets on porcelain surfaces.
Background: There are few studies that evaluate the effect of Er:YAG laser about orthodontic bonding on porcelain surface. The efficacy of Er:YAG laser in porcelain conditioning is controversial. Read More
Mar Biol 2018 23;165(9):146. Epub 2018 Aug 23.
1Centro i~mar, Universidad de Los Lagos, Casilla 557, Puerto Montt, Chile.
For aquatic breathers, hypoxia and warming can act synergistically causing a mismatch between oxygen supply (reduced by hypoxia) and oxygen demand (increased by warming). The vulnerability of these species to such interactive effects may differ during ontogeny due to differing gas exchange systems. This study examines respiratory responses to temperature and hypoxia across four life-stages of the intertidal porcelain crab . Read More
J Gastrointest Surg 2018 Sep 13. Epub 2018 Sep 13.
Department of Pathology and Immunology, Washington University in St. Louis, 660 S. Euclid Ave, CB: 8118, St. Louis, MO, 63110, USA.
Introduction: On occasional cholecystectomies, pathologists encounter incidental dysplasia in the gallbladder mucosa in the sections submitted per protocol for histologic examination. If dysplasia is identified, additional sections are taken and/or the gallbladder is entirely submitted to rule out underlying adenocarcinoma. The aim of our study was to assess the incidence of subsequent identification of invasive adenocarcinoma on additional sections, after an incidentally detected dysplasia was noted on a routine cholecystectomy section. Read More