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https://www.readbyqxmd.com/read/28650785/clinical-performance-of-heat-cured-high-viscosity-glass-ionomer-class-ii-restorations-in-primary-molars-a-preliminary-study
#1
Eliyahu Tal, Ari Kupietzky, Anna B Fuks, Nili Tickotsky, Moti Moskovitz
OBJECTIVES: The present preliminary study evaluated the clinical and radiographic performances of heat-cured high viscosity glass ionomer (HCHVGI) in class II restorations of primary molars. STUDY DESIGN: A retrospective study on a cohort of patients who had dental caries restored at a private practice was conducted. Restorations were evaluated radiographically and photographically by two separate examiners. RESULTS: Ninety-three Class II restorations in 44 patients (average age: 108 months ± 25...
2017: Journal of Clinical Pediatric Dentistry
https://www.readbyqxmd.com/read/28650136/platform-switching-and-super-short-implants-an-effective-technique-to-manage-residual-jaws-bone-volume
#2
Graziano Montaruli, Michele Laurenziello, Lucio Lo Russo, Luigi Laino, Lorenzo Lo Muzio, Domenico Ciavarella
INTRODUCTION: Authors describe and analyze an implant-prosthetic rehabilitation of posterior partially edentulous jaw by using a super-short implant, according to the platform switching technique, on which a lithium disilicate made crown was cemented. METHODS: One event of partially edentulous jaw in 2.6 region needing implant-prosthetic rehabilitationwas selected for this treatment. Because of the lack of vertical bone, a super-short implant (6mm in diameter and 6mm in length) has been placed according to the platform switching technique by using surgical and prosthetic components lower in diameter compared to the diameter of the implant's platform...
June 23, 2017: Minerva Stomatologica
https://www.readbyqxmd.com/read/28649791/bioactivity-and-biomineralization-ability-of-calcium-silicate-based-pulp-capping-materials-after-subcutaneous-implantation
#3
G Hinata, K Yoshiba, L Han, N Edanami, N Yoshiba, T Okiji
AIM: To evaluate the abilities of three calcium silicate-based pulp-capping materials (ProRoot MTA, TheraCal LC, and a prototype tricalcium silicate cement) to produce apatite-like precipitates after being subcutaneously implanted into rats. METHODOLOGY: Polytetrafluoroethylene tubes containing each material were subcutaneously implanted into the backs of Wistar rats. At 7, 14, and 28 days post-implantation, the implants were removed together with the surrounding connective tissue, and fixed in 2...
June 26, 2017: International Endodontic Journal
https://www.readbyqxmd.com/read/28649387/quality-and-quantity-of-construction-and-demolition-waste-in-tehran
#4
Alireza Asgari, Tahereh Ghorbanian, Nader Yousefi, Dariush Dadashzadeh, Fatemeh Khalili, Amin Bagheri, Mehdi Raei, Amir Hossein Mahvi
BACKGROUND: In recent years the generation rate of construction and demolition waste (C&D) has significantly augmented. The aim of this study was to assessed the quality and quantity of construction and demolition waste in Tehran (capital of Iran). METHODS: Questionnaire methods were used for estimating the amount of generated C&D wastes national statistical data and typical waste generation data. In order to defining the composition of C&D waste, trucks were randomly selected and their wastes were separated and weighted...
2017: Journal of Environmental Health Science & Engineering
https://www.readbyqxmd.com/read/28647622/risk-factors-for-unsuccessful-acetabular-press-fit-fixation-at-primary-total-hip-arthroplasty
#5
Urban Brulc, Vane Antolič, Blaž Mavčič
BACKGROUND: Surgeon at primary total hip arthroplasty sometimes cannot achieve sufficient cementless acetabular press-fit fixation and must resort to other fixation methods. Despite a predominant use of cementless cups, this issue is not fully clarified, therefore we performed a large retrospective study to: 1) identify risk factors related to patient or implant or surgeon for unsuccessful intraoperative press-fit, 2) check for correlation between surgeons' volume of operated cases and the press-fit success rate...
June 21, 2017: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/28647158/a-systematic-review-of-unilateral-versus-bilateral-percutaneous-vertebroplasty-percutaneous-kyphoplasty-for-osteoporotic-vertebral-compression-fractures
#6
Shengping Yang, Changxian Chen, Hanlong Wang, Zhiqiang Wu, Lianqun Liu
OBJECTIVE: The aim of this study was to compare the unilateral and bilateral approaches in treating osteoporotic vertebral compression fractures. METHODS: Based on the principles and methods of the Cochrane systematic reviews, the records of the Cochrane Library, PubMed, Web of Science, Chinese Bio-medicine database, China Journal Full-text Database, VIP database, and Wanfang database were reviewed until October 2014. The randomized controlled trials on unilateral and bilateral approaches to percutaneous vertebroplasty (PVP)/percutaneous kyphoplasty (PKP) for osteoporotic vertebral compression fractures were included...
June 21, 2017: Acta Orthopaedica et Traumatologica Turcica
https://www.readbyqxmd.com/read/28647157/veneered-zirconia-inlay-retained-fixed-dental-prostheses-10-year-results-from-a-prospective-clinical-study
#7
Friederike Rathmann, Wolfgang Bömicke, Peter Rammelsberg, Brigitte Ohlmann
OBJECTIVE: The purpose of this study was to evaluate the 10-year clinical performance of zirconia-based inlay-retained fixed dental prostheses (IRFDP). METHODS: For replacement of a molar in 27 patients, 30 IRFDP were luted by use of different cements, Panavia F (Kuraray Europe GmbH) or Multilink Automix (Ivoclar Vivadent GmbH), with use of inlay/inlay, inlay/full-crown, or inlay/partial-crown retainers for anchorage. Frameworks were milled from yttria-stabilized zirconia (IPS e...
June 21, 2017: Journal of Dentistry
https://www.readbyqxmd.com/read/28646693/antibacterial-effect-of-genetically-engineered-bacteriophage-%C3%AF-ef11-%C3%AF-fl1c-%C3%AE-36-p-nisa-on-dentin-infected-with-antibiotic-resistant-enterococcus-faecalis
#8
Justine Monnerat Tinoco, Nadia Liss, Hongming Zhang, Roni Nissan, Wanda Gordon, Eduardo Tinoco, Luciana Sassone, Roy Stevens
OBJECTIVE: Enterococcus faecalis is a gram-positive facultative anaerobic bacterium, which is present in 30-89% of teeth with postendodontic treatment failures. E. faecalis is capable of penetrating dentinal tubules and surviving as a monoculture after conventional endodontic therapy, indicating that it is resistant to commonly used endodontic disinfection protocols. Different E. faecalis strains have shown resistance to several antibiotics, and have been associated with both dental pathology and systemic infections...
June 12, 2017: Archives of Oral Biology
https://www.readbyqxmd.com/read/28645032/physiological-traits-and-antioxidant-metabolism-of-leaves-of-tropical-woody-species-challenged-with-cement-dust
#9
Advanio Inácio Siqueira-Silva, Eduardo Gusmão Pereira, José Pires de Lemos-Filho, Luzia Valentina Modolo, Elder Antonio Sousa Paiva
Tropical woody species occurring in limestone outcrops are frequently exposed to particulate material from cement factories. The effects of 60-day cement dust exposure on physiological traits and enzymatic antioxidant system of young plant leaves of Guazuma ulmifolia Lam., Myracrodruon urundeuva Allemão and Trichilia hirta L. were investigated. Cement dust (2.5 or 5mgcm(-2)) was applied to the leaf surface or soil or both (leaf plus soil) and plants were maintained at greenhouse. Cement dust barely affected the mineral nutrient levels, except for iron whose content was decreased in leaves/leaflets of all species studied...
June 20, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/28643095/-local-antibiotic-therapy
#10
REVIEW
Klaus-Dieter Kühn, Nora Renz, Andrej Trampuz
The treatment of superficial wound infections with local antibiotics is considered to be problematic as it is accompanied by an increased risk of resistance development and ineffectiveness in deeper regions. On the contrary, the local application of antibiotics is useful in arthroplasty and necessary if implants are utilized. The reason for this is the prevention of a rapid biofilm formation on foreign implants and a resulting infection may remain undiscovered until it becomes chronic. Apart from exogenous material, necrotic tissue (e...
June 22, 2017: Der Unfallchirurg
https://www.readbyqxmd.com/read/28642930/a-novel-etching-technique-for-surface-treatment-of-zirconia-ceramics-to-improve-adhesion-of-resin-based-luting-cements
#11
Eystein Ivar Ruyter, Nalini Vajeeston, Torbjørn Knarvang, Ketil Kvam
Objectives: Bonding of zirconia crowns and bridges to abutments is important, not only bonding of the thin resin layer to the abutment, but also bonding to the zirconia ceramic is crucial. Both mechanical and chemical adhesion are desired. Mechanical retention of dental porcelain achieved by etching with moderately concentrated hydrofluoric acid is not possible with zirconia ceramics. The purpose of this study was to show that etching is possible with relative low melting fluoride compounds such as ammonium hydrogen difluoride and potassium hydrogen difluoride...
January 2017: Acta Biomaterialia Odontologica Scandinavica
https://www.readbyqxmd.com/read/28642924/influence-of-niobium-pentoxide-addition-on-the-properties-of-glass-ionomer-cements
#12
Isadora Martini Garcia, Vicente Castelo Branco Leitune, Gabriela De Souza Balbinot, Susana Maria Werner Samuel, Fabrício Mezzomo Collares
Objective: To determine the influence of niobium pentoxide (Nb2O5) addition on the physical and chemical properties of glass ionomer cements (GICs). Materials and methods: Five, 10 or 20 wt.% of Nb2O5 were incorporated into commercial GICs (Maxxion R, Vitro Molar, Vitro Fil R) and one group of each GIC remained without Nb2O5 (control groups). The GICs were evaluated by Knoop hardness, compressive strength, acid erosion, particle size and radiopacity. Data were analyzed by two-way ANOVA followed by Tukey's test...
December 2016: Acta Biomaterialia Odontologica Scandinavica
https://www.readbyqxmd.com/read/28642923/the-influence-of-particle-size-and-curing-conditions-on-testing-mineral-trioxide-aggregate-cement
#13
William Nguyen Ha, Bill Kahler, Laurence James Walsh
Objectives: To assess the effects on curing conditions (dry versus submerged curing) and particle size on the compressive strength (CS) and flexural strength (FS) of set MTA cement. Materials and methods: Two different Portland cements were created, P1 and P2, with P1 < P2 in particle size. These were then used to create two experimental MTA products, M1 and M2, with M1 < M2 in particle size. Particle size analysis was performed according to ISO 13320. The particle size at the 90th percentile (i.e. the larger particles) was P1: 15...
December 2016: Acta Biomaterialia Odontologica Scandinavica
https://www.readbyqxmd.com/read/28642922/universal-cements-dual-activated-and-chemically-activated
#14
Eliane de Lima, Ricardo Santos, Márcia Durão, Armiliana Nascimento, Rodivan Braz
Objective: The aim of the present study was to assess the bond strength of universal cements cured either dually or chemically only. Methods: Three cements were assessed using different types of application: dual activated (DA) or chemically activated (CA). In total 80 dentin blocks were used, obtained through the enamel wear of the lingual and buccal surfaces of bovine incisors. Standard cone-shaped cavity preparations were created using diamond burs. Subsequently, indirect restoration blocks were designed with Filtek Z350 (3M ESPE) composite resin...
December 2016: Acta Biomaterialia Odontologica Scandinavica
https://www.readbyqxmd.com/read/28642913/the-effect-of-petroleum-jelly-light-cured-varnish-and-different-storage-media-on-the-flexural-strength-of-glass-ionomer-dental-cements
#15
Kristina Gorseta, Domagoj Glavina, Tomislav Skrinjaric, Beata Czarnecka, John W Nicholson
This study determined the influence of coating with either petroleum jelly or light-cured varnish and storage medium on the flexural strength of glass-ionomer cements (GIC). The flexural strength of two glass-ionomer cements (Fuji Equia Fil and Ketac Molar Aplicap) was measured. Specimens (2 × 2 × 25 mm) were prepared in three groups: uncoated, coated with petroleum jelly, or coated with light-cured varnish (EquiaCoat) cured for 20 s using a cure lamp (Bluephase G2, Ivoclar Vivadent, Schaan, Liechtenstein)...
December 2016: Acta Biomaterialia Odontologica Scandinavica
https://www.readbyqxmd.com/read/28642910/influence-of-abutment-design-on-retention-of-metal-copings-cemented-to-implants
#16
Albano Porto da Cunha, Glauco Pereira Moysés, Ana Christina Claro Neves, Rafael Pino Vitti, Flávia Cardoso da Rosa Goulart, Laís Regiane da Siva-Concílio
Objective The study evaluated the influence of abutment design on the retention of implant-cemented metal copings. Material and methods Two abutments of the same system with the same indications, height and the total occlusal convergence, but of different designs were evaluated. Ten RN synOcta abutments (Straumann, Waltham, MA) and ten RN titanium solid abutments (Straumann, Waltham, MA) were tightened to 35 Ncm on 20 implant analogs previously placed in resin blocks. Twenty plastic burnout copings were waxed, included, cast and machined by a single operator...
December 2016: Acta Biomaterialia Odontologica Scandinavica
https://www.readbyqxmd.com/read/28642908/methodologies-for-measuring-the-setting-times-of-mineral-trioxide-aggregate-and-portland-cement-products-used-in-dentistry
#17
William Nguyen Ha, Timothy Nicholson, Bill Kahler, Laurence James Walsh
Objective The current standard used to measure setting time for Mineral Trioxide Aggregate (MTA) involves indentation testing with arbitrary weights. This study compared indentation testing against rheological measurements and assessed the influences of particle size and the inclusion of bismuth oxide on the setting time of experimental MTA and Portland cement (PC). Material and methods Two PCs (P1 and P2) of different particle sizes were produced using the same clinker. From these two PCs, two experimental MTAs (M1 and M2) were created with the addition of bismuth oxide...
December 2016: Acta Biomaterialia Odontologica Scandinavica
https://www.readbyqxmd.com/read/28642196/gdf5-significantly-augments-the-bone-formation-induced-by-an-injectable-plga-fiber-reinforced-brushite-forming-cement-in-a-sheep-defect-model-of-lumbar-osteopenia
#18
Matthias Bungartz, Elke Kunisch, Stefan Maenz, Victoria Horbert, Long Xin, Francesca Gunnella, Joerg Mika, Juliane Borowski, Sabine Bischoff, Harald Schubert, Andre Sachse, Bernhard Illerhaus, Jens Günster, Jörg Bossert, Klaus D Jandt, Frank Plöger, Raimund W Kinne, Olaf Brinkmann
BACKGROUND CONTEXT: Biodegradable calcium phosphate cement (CPC) represents a promising option for the surgical treatment of osteoporotic vertebral fractures. Due to augmented local bone catabolism, however, additional targeted delivery of bone morphogenetic proteins with the CPC may be needed to promote rapid and complete bone regeneration. PURPOSE: In the present study, an injectable, poly (l-lactide-co-glycolide) acid (PLGA)-fiber reinforced, brushite-forming cement (CPC) containing the bone morphogenetic protein GDF5 was tested in a sheep lumbar osteopenia model...
June 19, 2017: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/28642057/novel-multifunctional-dental-cement-to-prevent-enamel-demineralization-near-orthodontic-brackets
#19
Yansong Ma, Ning Zhang, Michael D Weir, Yuxing Bai, Hockin H K Xu
OBJECTIVES: White spot lesions due to biofilm acid-induced enamel demineralization are prevalent in orthodontic treatments. The aim of this study was to develop a novel bioactive multifunctional cement with protein-repellent, antibacterial and remineralizing capabilities, and investigate the effects on enamel hardness and lesion depth in vitro for the first time. MATERIALS AND METHODS: 2-Methacryloyloxyethyl phosphorylcholine (MPC), dimethylaminohexadecyl methacrylate (DMAHDM), and nanoparticles of amorphous calcium phosphate (NACP) were incorporated into a resin-modified glass ionomer (RMGI)...
June 19, 2017: Journal of Dentistry
https://www.readbyqxmd.com/read/28641970/the-interaction-of-caseload-and-usage-in-determining-outcomes-of-unicompartmental-knee-arthroplasty-a-meta-analysis
#20
Thomas W Hamilton, James M Rizkalla, Leonidas Kontochristos, Barbara E Marks, Stephen J Mellon, Christopher A F Dodd, Hemant G Pandit, David W Murray
BACKGROUND: Outcomes after unicompartmental knee arthroplasty (UKA) are variable and influenced by caseload (UKA/y) and usage (percentage of knee arthroplasty that are UKA), which relates to indications. This meta-analysis assesses the relative importance of these factors. METHODS: MEDLINE (Ovid), Embase (Ovid), and Web of Science (ISI) were searched for consecutive series of cemented Phase 3 Oxford medial UKA. The primary outcome was revision rate/100 observed component years (% pa) with subgroup analysis based on caseload and usage...
May 11, 2017: Journal of Arthroplasty
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